How to setup the Seplos BMS 10E. Works amazingly with the right settings.
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- Опубликовано: 13 сен 2023
- So, in this video, I am revisiting the #Seplos BMS V2, the 10E with Bluetooth and I make it perfectly work with my #Victron system. Some viewers have left comments and also contacted me to give me more info on the setup (thank you!).
Unbelievable what this BMS can actually do with the right settings. I also show you what the passive balancer is capable of at 57V and... some time.
From the beginning, I didn't like this BMS at all, but now with the right settings, it works great.
Please leave your comments down below and share how you have setup the Seplos 10E BMS with your inverters other than Victron.
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Hi Andy,
I have a SMA Sunny Island, in ongrid and also offgrid, when there is no power feom the grid.
The SMA has very limited settings and he has a stupid behavior when the MOSFETs closes. And on the other side the BMS tells via the total ovp value in the CAN bus the charge voltage. So SMA wants to charge to the point, where the BMS closes MOSFETs.The inverter tries to push currency till it goes up to 60 voltage and the shuts itself down. The solution is simple with the seplos BMS: switch off the total over voltage protection. I set the ovp value to 55.2v which is good imho. Set the total voltage alarm little bit below to 55.00v. Of course I have a last security barrior still with the cell OVP. This is the main last security. Thats it and works totally fine!
Ah, right, thanks a lot for sharing. This is the other way around what you did using cell OVP as the last protection and it works also. That would be the solution for any inverter then! I'll pin your comment at the top.
Thanks again for sharing.
The seplos bms also has another setting called" charging overvoltage protection."
Or "Harging overvoltage protection" in th pc software.
It turns off the charge mosfets whe the set voltage is reached.
And back on when 14 seconds after the charging sorce is removed. Or at least that is how it seems to work on my 10E bms.
So mabie 4 🐸
😊
I have SMA Sunny Island too. I connect Seplos 10E BMS to SMA Sunny Island, and from Sunny Island connect to Venus Raspberry Pi. I also have Victron 250/100 MPPT solar charger connect to Raspberry Pi. I Now my BMS can communication to both SMA sunny Island inverter and Victron MPPT solar charger. I setup up charge voltage 57.5V for my 13.73kwh battery bank. When the battery voltage hit 57.5V (about 99.4% SOC), BMS will stop charging. And Solar power (5kwh power) will feed power to hold house ( not HVAC ;-) ) ....Work Great !!!
@@HuyNguyen-pk1lkThank you very much for sharing.
Is your SMA Sunny Island on an AC Couple grid-tied setup? Meaning that you are charging the batteries with the Sunny Island using its AC2 input and no MPPT charge controllers?
How does the Sunni Island work with the Seplos battery/BMS? Any issues losing communication with the BMS and shutting down the Sunny Island?
I am a little confused when you said that you switch off the total over voltage protection but set the OVP value to 55.2v. Isn’t that the same? Or are those 2 different settings?
I have an SMA and I am looking for BMS that work with the Sunny Island in a grid tied setup. The SMA approved battery list does not have many supported battery options.
Thanks Andy, the community concept is great and thanks for supporting us so well!
Yes, the community is the best. They know everything.
Heya, nice test again. it's nice of you to think about other user's and how they have setup there parameters and test if they are oke for you too
Good morning from Sydney!🇵🇭
Hello 👋
Hi Andy, great Video. What you can achieve together with the community is really ingenious. And you brought all this information together and made another Seplos video out of it. We also talked about this scenario for a long time in the community here in Germany, but the 10A limit was always an obstacle. No one had really thought of switching off the single cell alarm. That was the last point. Now, with Seplos, we have a really good BMS that can really enter into a good symbiosis with the Victron systems. I hope that other inverter manufacturers will also have similar possibilities. But as was already written about the videos at the end of last year and you also briefly recorded, hybrid configurations are the ones that get the job done. Thank you very much for staying on the topic and for producing a really good final video on Seplos. This work is very valuable. Greetings from the still warm Germany to Australia. MfG Sven.
Thanks a lot for your very kind feedback and comment, Sven.
That was very useful and much valued. You and other contributors are ahead of me (I have 4xSeplos DIY with 280 EVE cells) with 3xVictron Quattros and Smart Solar. This will save time and worry! You are also doing Seplos a great favor.
Oh, wow, you're building a hug system there. Nice to hear...
I’m glad you read my e-mail! 😊
Thanks for sending an email. I probably haven't read it yet. There are still 150 unread in my inbox...
This Seplos system is looking better and better ... thank you Andy.
I hope you get some kind of kickback from Seplos 😉
I want to make this work for us customers but also want Seplos to succeed with their products as I think they are great (even Seplos has not recognised the potential, especially with software updates)
I am glad, that you made this Video...I was in the process of making one as well 😅
Very good tips....I got the balancing part right, but I did not spend enough time on it to figure out, how to reset to 100% without OVP, because I have a Victron Shunt anyways that is in controll. But very valuable information indeed. A lot of people could now use this BMS without many compromises, as long as their cells are matched well. Thanks for that and many thanks to all the commenters, sharing your knowledge!!!
🐸🐸🐸
Thanks, Raphael. Yeah, the 10E BMS got a good bump now and works actually well with Victron now.
I thought DVCC was only for grid connected, I must revisit this in out offgrid settings, another great review Andy👌🇦🇺
Thank you. No, DVC can be used in any scenario to control current, voltage, temperature and other settings.
Learning never ending 😎
I cannot see and end, no...
Hello Andy, first of all thank you very much for all your hard work you are doing to provide us with all the tests, comments, infos and victron setting knowledge for price reasonable solar stuff. Because I think you are one of the few people on this planet who owns and had tested both Seplos BMS V2 and V3 version, the question is: Are the same hacks (settings) working for upgraded Seplos BMS V3?
Many thank Andy !
Peppe from Napoli
Thank you, Peppe!
10kw in between the clouds nice.
Got a max 8kw peak from my new system here in the UK a few days ago and recharging to 100% to full from 62% loss overnight most days.
Changed my lithium voltages having learnt from you and now understanding more.
Regards from cloudy UK :)
Here near the Nürburgring race track, we also had an unusually cloudy summer this year. I had 800kWh less from May to the end of August than last year and a constant charging and discharging, with a few exceptions, due to the many small clouds, as the load does not change whether a cloud comes or the sun shines. Greetings to the UK
That sounds good but I'm not sure if I understand correctly, was that a peak delivery for the hour? 🤔 Recharging to 100% to full from 62% what capacity battery?
I'm also in the Uk but I've only just installed 2/3 of my PV module so I cannot quantify correctly yet. Also I've just finished assembling my DIY 304A battery to add to my smaller 100A so again I have to wait until the system its complete before I can judge my full production.
Hi Andy! Many thanks for your advice regarding the RS232 connection. It worked, and I found the software that connected PC - RS232 - with the Junlee battery. You were also right that those BMS might be used by the other manufacturers. Also after long search I found that same BMS used in TAICO, ESENER, VOLTA, and probably Tervix batteries. None of them supply or shared the RS232 software with their batteries which is strange as they post video instructions how to use it. But apparently I was lucky to find some third party soft and it worked (not the PBMStool or PBmodbustool). So far only Taico responded to me and gave the advises regarding the connections and protocol for the Voltronic invertors.
Excellent. A bit of a journey but you got there eventually.
@@OffGridGarageAustralia Yes. And now even the inverter see the battery via rs485 and using the Darfon protoco in battery and Lib in the inverter. But it gives warning number 60 "battery is not allowed to charge or discharge". If switch to LIC, it gives warning 04 "battery is too low". Will try via Victron protocol and CAN connector, what it will show there. PYL didn't work. 🙃
Hello Andy, I must have missed this video when it was first published but I'm glad I found it now cause I'm just about to top balance my first ever built 304Ah battery with the Seplos 10E and I was wondering how to go about the limitations previously shared by your good self. Thank you so much for all your tests an precious informaion 🙏 I will share with you a short clip of my construction for your comments as soon as it's completed and I have a minute to edit 😍
Hello do you have the right settings for the victron and the BMS Seplos I'm lost, thank you
Thank you Andy for great job you are doing with Seplos BMS. I've bought 4 pcs. 280 Masons for usage with Victron ESS and still can't find best settings of BMS playing with it several month on test bench.
I found 10C BMS which i got, with FW 2.9 behaves the same as 10E, so all your videos related to 10E also relevant to 10C with fw 2.9.
Same problem here. I hope Andy and/or Helmut will share their full settings (Seplos and Victron) for others to import and try out.
Yes, the Seplos V1 10C with FW 2.9 behaves the same. I liked the FW 2.8 better as it also allows for max charge voltage set for non-Victon systems.
On the 10C, I am running the FW 2.9 for Victron: CAN1101[FW29_HW14_VC03_230323_SEPLOS_ALL](victron)
I am running 16.06.03 für V16/10E BMS
Thanks Andy
Thanks, Wayne.
Morning Andy, the grass is growing so quickly down here. The battery ride on is working hard right now. 30 next week. Weather report over mate😂.
You got a battery ride on... uh....
@@OffGridGarageAustralia Yes Ryobi, did get a torro but broken down in one week.
Crazy, greetings to Helmut from Pfaffenhofen, i see a aussie Channel and i´m sitting here in Pfaffenhofen too 😂
Well, you can pick up his settings on a USB stick then 😂
Excellent video - i was always wondering why my Seplos went to 100% during nice weather, although I did _not_ charge until over voltage protection!
So it seems to be better than expected 🙂
After my neeey balanced all cells properly I left it disabled for quite a while, only to find out that the cells seem to stay balanced quite nicely.
Regards from Bensheim, Germany!
Thanks for your comment. What voltage are you charging to to prevent OVP? Or are you using Victron?
Gruesse ins schoene Bensheim
Thanks for keeping the interest up for this BMS. Mine (NCM version) has been faultless controlling my load shifting setup. I did get the Neey balancer though. I can also recommend used Outlander batteries as a cheap source of cells.
Too late for me but I would have liked you do a budget battery with used EV cells. There are endless videos of systems like the Mason and Growatt. These are too expensive to be economical.
The NMC version works very different and the balancer can pretty much run all the time in these BMS.
An Outlander battery... I sold mine. Including the car😉
@@OffGridGarageAustralia Hi Andy from wet England. They seem identical to me apart from the last 3 balancing pins are bridged with solder. I prefer to top balance so that my parallel batteries (13 cells each) all have the same capacity. Last night at 62% they were all within 4mV of each other.
I first started watching you when I got my Outlander last year. Eagerly looking for a new way to reset the BMS. Now I have a genuine MUT 3 I can do things properly. I also upgraded the batterie to 40Ahr cells after selecting the best cells from 3 used packs using the EBC A40L of course.
I don't know where you come from, but here in Europe energy is becoming more and more expensive and here one or two 14 kwh batteries like those from Seplos with Eve cells pay for themselves after max. 4 years. I don't need any energy from the grid operator for 8 months and reduced energy for the rest 4 month of the year, so with a consumption of 7,000 kWh/year it pays off quite quickly given the prices for electricity, especially as you can also implement an emergency power supply that makes you independent of the ever unpredictable decisions of today's politic clowns
@@derfreiemensch Hi - I am in the UK and due to planning restrictions I can't have solar panels so load shifting is the only way I can save. I presume you have wind or solar to provide power.
I use 6 hours of cheap electricity to charge my battery at £0.075 per kwh - Inteligent Octopus tariff. It is rarely fully used unless I charge my car outside the 5 hours. This is then used instead of the day charge of £0.30 per kwh.
My system cost about £4000 and saves me about £1000 a year at current prices.
Not much point getting solar panels as the payback would be too long.
I could configure my Victron Multiplus 2 to be off grid if needed but power cuts are very rare here so not yet needed.
Using Outlander cells shaves a couple of years off the payback time.
4 years payback seems a bit optimistic for a system with a 28 kwh battery, inverter and solar panels if all bought new.
@@foxythedirtydog4494 I only mean the battery, not the kompl. system with the 4 years😃
Thanks again Andy, for this video, the result seems good.
But I'm not sure whether to charge the cells all the time
at these voltages, is good for their lifespan??
But the result with this BMS is very satisfactory.
As we can see, many users use the Seplos BMS and actually all of them are satisfied with it, more or less, which is related to the various settings you can make. The BMS is reliable, the support and service as I know it from Seplos is good and the price is reasonable. That's why it was no mistake to make so many videos about the Seplos BMS, even if some people didn't like it.
Thanks Andy great work dude
A case of 'not perfect but good enough'..
Well, I would not say 'all of them are satisfied'. There are a lot, a whole lot of problems with these BMSes. But Seplos can solve them with future software updates. I just doubt, there will be any further updates for the V2 of the BMS...
But I agree, the BMS works reliably as a protection device.
Hi Andy. Hello from not so sunny Scotland! As I have recently installed a Seplos 280AHr kit, Multiplus 2 48/5000 inverter and Venus OS on Raspberry Pi your channel has been my go to source of information - thanks for all you do.
I have an existing Solaredge PV system and the Victron is AC coupled and is grid tied and using ESS. I am using the battery monitor of the Victron set in VE Configure to show battery SOC based on an Absorption voltage of 55.2v and Float voltage of 53.6v. (SOC when bulk finished set to 99%). At the moment I have no data connection between battery and Venus OS as I am not sure of any advantages.
The Seplos BMS has Bluetooth and I think it is the V2 10E. (Part Model 1101-SP88, Protocol V2, Software V16.6). Cell balancing is pretty good and the only issue I have at the moment is that the BMS SOC and Victron SOC can differ (Victron always higher) even though the indicated voltages are the same. Do you think there would be any benefit (and would it work) by changing the Absorption level to 57v and change the other BMS settings as shown in the video?
Thanks again for the time you put in doing all this, it is much appreciated.
Bill
Why haven't you connected Seplos to GX device? Is this because raspberry pi does not have a CAN port?
Thanks
Thanks a lot for your support, Adrian🙏🍺
Thanks Andy for going back and trying and updating on all the new things you found out. Does anyone know if this BMS could be configured and works correctly in a 15S config?
This should not be a problem, as it is used by many as a Pylontech 15s system as a supplement to the purchased pylons.
It also work for deye users. I only have lowered the overvoltage protection to 56.8V and every other setting is Standard. Now it works amazingly good👍 Charges to 55.6V because seplos and deye have a difference from 0.2V.
No protection is triggered 👍
Ah, right, there is a 0.2V different you work with... Where is this coming from?
@@OffGridGarageAustralia good question. But other reported this too. I dont know why. Maybe from my nh circuit breakers. Others need to test this maybe with no breaker between
@@OffGridGarageAustralia I cannot go with that. In my case there is even a 0,4V difference, and this also to a calibrated Voltmeter, whereas another Deye 12K does not show this behaviour. Since the Deye displayes the OVP voltage of the Seplos, I assume, Deye invertes just don't calibrate their products or there is a terrible voltage reference, too. This is shame.
Anyway this does not help me either, because fore some reason I haven't figured out yet, my Seplos BMS still does not reset to 100%.
Viele Grüße!
I Use a Deye as well with the same BMS, however at 100% SOC the voltage shows like 3.5v per cell at the max. Can seem to charge it any further, should I change the 280ah to lets say 300 ah and see what happens ? Any suggestions ?
Thanks Andy for the great insights. The only thing that worries me still is the relative high cell voltages, which could remain high for longer periods of time on a sunny day e.g.
Hello, you can set the cell warning and protection wherever you want.
I know. My point is that Andy always is concerned (rightfully so) about cells sitting on high voltage levels for a long period of time. Just wanted to know if Andy sees any issues with the cells sitting on more than 3,45V for potentially longer timeframes.
Yes, that is an issue. Some viewers here say there is no evidence that this will harm the batteries in any way long term. Does the battery last only 24 years instead of 25? Or is the change more dramatic and we see a degradation after 10 years already instead of 20 years?
In any way, I would usually not recommend charging that high. I'm doing this just for the sake of testing the passive balancers which are still in these BMS.
With the new JK BMS at the very close horizon, we hopefully don't have to worry about this any more...
3.35V-3.375V is still recommended for floating.
Thanks Andy for your thoughts. Actually I am developing a solution in NodeRed that could help us with that issue (Seplos & DVCC). If you are interested, let me know ;)
@@OffGridGarageAustralia The question with all the cell tests is how much Karrenz the manufacturers have planned for. For example, it happened to me at the beginning of balancing that I had charged a cell to 4 volts for a very short time, for about 1 minute, because I was briefly distracted and as soon as I noticed this, I quickly discharged it again with the light bulbs. This cell has remained inconspicuous to this day, just like all the others, and has not suffered any detectable damage. There is also a video interview with an expert where he states the maximum cell voltage as 3.75V, which is perhaps also the reason why some battery storage units state 3.7 volts as the maximum OVP. As can be seen in Andy's video. Nevertheless, for me, I keep 3.485-3,5V as the maximum charge voltage 55,8 packvoltage, the pack is then 99% fully charged and the cells are not so stressed, which will certainly have an effect on the service life.
Hi Andy. Great video. Is it possible to get Helmut parameters? I am ongrid as Helmut and I have an issue that PV is jumping up and down due to Single cell HV protection and battery goes charge / discharge loop limiting grid feed-in also
Good morning from Dublin, Ireland. Have you experimented much / at all with the bottom end settings, to get the most from the battery pack ?
Hi Andy do you have a link to your settings for the seplos BMS. They are not on the my settings page on your website. Cheers
Andy where can I find the parameter and switch settings for the Mason 280. The spreadsheet does not seem to have the settings you showed in the bms app.
Hi Andy,
great work!
One question it seems that you use a different translation of the parameters in the Battery Monitor. For example "Single high voltage alarm" is on my side "Monomer high voltage alarm", etc. which is really confusing. Did you just change this in the XML files and would it be possible that you share your English version?
Best
Alex
Hi Andy,
you've covered the voltage upper limit parameters very well. However, I have the problem that discharging does not go below 53 Volts for the package (16s). And I really don't find the problem. Could you make a similar video for the lower parameters. How is the behavior there?
Greetings from Germany
Andreas
@OffGridGarageAustralia question, where did you get the better translation of your pc software. mine says: monotomer instead of single. tried your softwre/agreement on the google drive but stays at montomer 😀
"An active balancer would have done this in a few minutes"
And using the passive balancer over time minimised the deviation of the cells to where balancing doesn't take long cause you've been keeping it at 10mv when full charging.
It's been about 2 weeks since I've been able to fully charge my battery, and it took about an hour to bring it down from 25mv to 10mv. At that level of difference, it's not worth buying an active balancer for my system.
Now if you have a Frankenstein battery, then sure, active all the way :).
For me, I could care less what state of charge the BMS says my battery is at. I go by the Victron Smart Shunt SOC. I feel this is much more accurate after watching both SOC over a two year period.
If you have several of these batteries, the BMS shunt will be the point of truth and you would not need any other shunt any more.
I have three BSM and one shunt, all different. Which one is correct, I don't know, I just picked the shunt as my point of truth.
Good BMS exploration and tutorial Andy, and thanks again. At 4:40 the long passive balancer session result is pretty much what expected, given what I've observed how a170ma balance current just keeps smaller 6AH to 12AH with minor variations in internal resistance in balance. I suppose if you have cells that are nearly perfectly matched in internal resistance and capacity, it might be acceptable for 280ah cells, but the real world is never perfect for long, and how feasible is it to expect the average user to continually monitor and float charge a pack for days when needed? It needs to be 'Set and Forget' and only alert when there is a serious issue, and my thought goes more towards an active balancer in addition to the OEM BMS that activates when required.
I think so too. If you're not constantly monitoring the cells, it is better to get an active balancer for peace of mind.
The passive balancer really struggles with these 280Ah cells. And 17h balancing is... unrealistic anyway.
@@OffGridGarageAustralia Hi Andy, I would like to find a way to agree with you. And maybe you have already found a work-around my problem. I have very recently acquired three 16(S) boxes from EELwith BMS and active balancer. Although they have EEL brand name the visualisation look VERY Seplos and NEEY. I have plugged everythin together and top balanced up to 3.5V per cell already with the active balancer and the BMS fro protection down to 3mV. As soon as the balancer kicks into action (3.45V) the BMS sends ALL kinds of alarms and protection over the system because the high currents (4A) over the tiny wires. The app of the balancer shows nothing of this It seems to measure only when the balancer stops between charging the lower and discharging the higher cell. Over- and undervoltage. Is there a way to avoid this tsunami of alarms? Best regards Ekki from Germany
@@DLH208 Hi Ekki, that is strange as I have 2 Seplos BMS connected to active balancers (1 NEEY, 1 capacitive balancer) and none of the BMS show any issues.
What errors or message do you see in the BMS?
Also, are the BMS and NEEY sharing the same cables?
I will build such a EEL box (10E BMS) next on the channel and also have a NEEY here. I can do some testing around the cabling and if sharing them causes any issues.
@@OffGridGarageAustralia Ah the error messages: all warnings and protections for cell voltages high and low, simultaneously and in quick succession. And the respective charge and discharge switch actions.
@@DLH208 and they stop when you disable balancing in the neey?
Good evening Andy.
Maybe you missed it. As mentioned in my previous messages, you may use setting number 18 as bms overvoltage and not anymore number 14 (working only as charger controller setpoint in this modality). Already tested it with esternal power supply, it works perfectly. One again seplos v2.0 is a perfect bms. Peppe from Napoli.
can you give an example, what your settings are for 14,15 and then 18? Do you set 14 to 57V?
@@kristjanaiaste Hi Kristjan,
Personally I settled it in this way:
#10 - 55.2V
#11 - 54.4V
#14 - 56.4V
#15 - 55.6V
#18 - 56.8V
#19 - 56.4V
10 is the warning alarm, current will be reduced to 9A after 30 seconds.
14 is the setpoint given to the battery charge control.
18 will be used as bms total overvoltage protection.
It is important to set the "flag" of the overvoltage protection on off.
Regards
You may have missed this, Peppe but I cannot limit the current as I will limit the output of the MPPTs.
What Overvoltage protection would you set to off??? This seems like a safety concern.
In my solution, I have only disabled the alarm but not the protection. Again, I would not recommend turning the protection function off!
Good morning Andy, as I remember you were limiting th voltage charging at 55.2V. If you see my settings, the current limitation is settled at 55,2V (#10) while the voltage charging limit is at 56,4V (#14). Who is the one limiting charging capability ? Selfexpanatory...
Kind regards
@@OffGridGarageAustralia Andy, seplos v2.0 has one hi voltage alarm (#10) and two overvoltage protections (#14 and #18). I suggest to keep hi V alarm operative, to disable overvoltage #14 and keep operative overvoltage #18. Set #14 will work as charger setpoint. Better I prepare a video, it will be much more clear.
I saw the title, watched 1min - and I really hope this is the video that will finally allow me to configure my Seplos BMS to work nicely with the Victron system. I have a Neey active balancer and a smart shunt. Does this change anything in terms of configuration?
And one request/suggestoin: Could you export your Seplos/Victron settings and provide them on your website? I think that'd help a lot of people.
Another question: would you recommend to charge to 57V now or are you changing this back?
Yeah, sure, I can put this on my website. It's a work in progress though and not fully setup apart from this function atm. I may update the file from time to time but a version number or the date may help identifying if there were changes.
I also have the original default settings from Seplos for all their BMS and can provide them as well if anyone wants to start from scratch again.
If I go back to 55.2V... that is a good question. Atm, I'm testing the 56.8V in my shelf and see if the balancers do any better than with lower voltage. I don't want to spoil the results... so I won't 😉
@@OffGridGarageAustralia Providing these on your website with a timestamp would be fantastic. Similarly for the default settings - I was actually looking for these at some point as I also felt "maybe I should start from scratch again"
Hi Andy, thanks for sharing.
Any luck with getting both packs to work with the monitoring software?
Currently iam using Bluetooth to bypass the dip switch
I only have two operational BMS at the moment and they are both showing in the app when paralleled. All in total, I have 5 BMS here which I need to setup and connect to batteries to test. All Seplos BSM 10E, so that will be interesting.
Awesome new but as you said the max voltage is way to high. Is it possible to use these settings with a max of 55.7V (or anything)?
Hi, is there a way to set the cycle counter in the Seplos BMS. I have installed my EVE 280Ah cells that have 38 cycles in my new Seplos Mason 280 Case. But I cant find to set the cycle counter to 38. Any ideas?
hi once again great review, great content and great contribution to community thanks for your share, now i ask more these could you share your complete settings of the seplos bms from 0 to 86 ty (could you add it to BMS Comparison.xls file adding a new sheet with your settings)
What version of the BMS though? They now have three different BMS, software and settings...
It's on my list of videos to make about the Seplos settings.
@@OffGridGarageAustralia 10c and 10e
Hello Andy. I hope the next video is the JK BMS you mentioned some weeks ago. Just today my brand new Basen cells arrived and i still have to buy the bms so i'm waiting impatiently for that video :D Another thing, you said the charging mosfet stay ON at 100% but in the spreadsheet it says off. I'm missing something or you wrote off cause it the mosfet stays on with this settings just with Victron?
Still not here yet...
Well, the FETs stay on when setup as shown in the video and using DVCC to limit charge current but they turn off if OVP is reached.
I'll update the spreadsheet and put the info in there...
@@OffGridGarageAustralia Thanks a lot for clarifing it
🤗🤗👏👏💪💪
Hello i hawe similar bms and Victron system multiplus ii gx and smart solar mppt 150/100 Everything is same like yours seplos mbs i can set all safety values and etc. But i hawe one issue, smart solar mppt charge voltage not posible to change, voltage is fixed on 52.4. Thanks.
Hi Andy,
Good video.
This seems to be a step forward for this BMS.
I am not realy keen on turning off the Cell Overprotection though.
This is a safety feature and it is there for a reason.
At some point 1 cell may fail, one connection may go bad for some reason or some other anomaly may occur. In that case the Pack overvoltage will never be reached and the protection will not kick in effectively ruining the rest of the pack during charge.
Or am I missing something here ?
Having the cell protection turned on, using a lower cell/packvoltage and the active balancer would still be my preferred method.
In the end I don’t care if the pack is 95,96,97% since the lost energy is minimal and the % is just an indication of one of multiple packs anyway, even more so with multiple packs. Periodically resetting to 100% is not realy a problem in most cases.. as is simply using an other bms for that matter.
Sorry, no, I didn't turn off the cell OVP ( I would never do that and would not recommend it!) but just the cell high voltage alarm/warning. Just the alarm! As soon as an alarm occurs (either cell or pack) it limits the MPPT current to 10A in off-grid installations.
You can still see the cells showing in an orange/brown colours on the left. This is the alarm when any cell is over 3.5V and it still shows this in the BMS but it does not act any more as I turn off the function for cell high voltage alarm on the right with the function switches.
Here is a summary which makes it hopefully clearer:
Cell high voltage alarm: 3.5V (Function turned off, so no action if this voltage is reached apart from the visual colour change in the software)
Cell overvoltage protection: 3.65V (Function turned on and BMS will disconnect if reached with any cell)
Pack high voltage alarm: 57.5V (Function turned on and BMS will limit to 10A charge current if reached)
Pack overvoltage protection: 57.8V (Function turned on and BMS will turn off when reached)
Ah.. I must have seem your video at too hogh a speed 🫣
This clarifies a lot.
Tnx 👍🏽
@@NaamNatuurlijkniet Hahahaha, slow down!
Hi Andy, great videos as usual.
I've just finished building my two Seplos batteries charging / working great, on the bench not connected to any Victron equipment.
Then a watched this video on resetting the batteries to 100%, at the same time I was thinking back to your video on the Seplos communication / setting the parameters (the on where you are changing dip switches to get them to communicate with each other).
I remember at that time you were saying when the Bluetooth app is available we would not have to change the dip switches on the batteries we will be able to do it in the app and life would be great (I added the last bit :-)) I've got the app running however I had to disconnect the communication cable between the batteries and reset the dip switches to off? Is that correct? You have lots of videos on the Seplos battery if I have missed something if you can point me to the right video please.....
Also it would be good for someone that's new to setting a solar / battery system (like me) if you could do a conclusion video for the what you think is the best setup for Seplos batteries. Its taken me hours to re-watch all the video's and although I think I've got a good understand on most of the setting it would be good to have a conclusion video.
Many thanks, Alan
Thanks Alan. In deed, I have never tested this feature of the Seplos BMS V2.
There is a function switch in the settings though, where we can enable that. It's far down in the list of switches on the left hand side of the settings screen and I believe all DIPs need to be off. Very similar how they did it in the V3 of their BMS. It might also need the cabling to be in a certain way between the BMS, again similar to what the V3 does.
Have a look here for the V3, there are chapters in the video description: ruclips.net/video/AJLwxqHsHjk/видео.html
Andy, excellent subject and excellent presentation. I have this same BMS, but have been super frustrated with Seplos on how to gain the efficient configuration of the poor documentation.
Who and where can I go, to get the ‘latest-and-greatest’, configuration?
Oh, did I tell you, my 305amp cells have been on the shelf, awaiting this exact input. Frustrated, from Tennessee!
I will upload my XML file soon on my website so you can try and download that. It's maybe a starting point.
The problem is, all systems are different and one configuration may not work with another.
Encouraged me to check my charge settings well done Andy.
@@OffGridGarageAustralia can you kindly, let me know when you made that file available?
@@jimpowell9205 I have now uploaded both the genuine default config file (resets all settings and parameters back to factory default and the exported file from this video.
Follow the link under the Seplos BMS V1 and V2 here off-grid-garage.com/battery-management-systems-bms/
Hi Andy, I have DEYE 12kW inverter and I have active "intermittent charging function". After BMS hit 100% and turn OFF mosfets, inverter still live and MPPT feeds home with full power. I´m off grid too. After battery SOC drop under 96% bms will turn ON again and start new charge cycle.
With this settings and 57V your cells sit on this voltage a hole day (if you have a lot of sun) - is it good for cells healt?
what are your settings in Deye for float, equalisation etc? You can see them only if you change to V mode for a moment and Deye uses them even in SOC mode... (I charged the battery to 58V when topbalancing and when I connected them to Deye, it discharged them to float V range)
@@kristjanaiaste I use Seplos BMS, so BMS controls charging. I don´t use V mode.
Friend why don't you make a nice video where you explain
all 86 parameters of the Seplos V2 10E
and give your advice on the values to change compared to the default
and paired with the 4th generation Neey External Balancer
What to do when using a Multiplus 2 and Victron MPPT with a 48v LiFePo4 in an Cerbo GX ESS system..... There is no real Float mode in such a setup. So should we still stick with the 55.2v and just trust the passive balancing ?
Yeah, that's a good question. I would probably stick with the 55.2V. As long as there is no cell running away, don't worry about it...
I have no name inverter without charging settings for lifepo4. But i have settings name “USER” thats mean that i can to set anything i want.
For my lifepo4 16s 230AH system i set such settings as:
Balc 56.8v-3.55v
Float 55.2v-3.45v
Equalization 57.6v-3.6v (automatically once in 30 days - during 30min)
My JK BMS 1A balancer show me cell volt.difference under 60A discharge near 0.02v and charging the same 0.015-0.02. After 15-20min full charging to 56.8, my cell difference = 0.008-0.005v .
I think it balanced super fine.
I don’t know why seplos balanced so slow and why they don’t want to use active balance even 1A.
On my seplos the current shunt is off a bit, so I just tweak the “pack capacity” so it tracks SOC better. I think you’re meant to be able to calibrate the shunt, but couldn’t figure out how to do it.
I don't think 'calibrating' the shunt is something the customer should do without being advised from Seplos to do so...
Yeah, the capacity tweak will work.
Hi Andy, if you set the pack voltage alarm to 57.5 volts and the pack voltage protection to 57.8 volts, and you charge your pack with 100 Ah, the voltage will shoot above 57.5 volts so quickly that the protection will take effect immediately. The voltage cannot be reduced so quickly when the 57.5 volts are reached, the voltage first goes down to 80, then to 60, 40Ah etc., but in this time the protection is already reached. For me, it is desired that the charging current is reduced to 10 Ah, because the overshoot is to strong and also it does not matter because my system is on-grid running. I charge to 55,8 Volt now and the BMS set to 100% also if the 30 min reached 3,48Volt or if it overshoot and reached 56,2 volt. If the system overshoot it panics and discharged also with to much Ah and swing before it calms down. With the limit to 10 Ah it is better. Before I charge once a month to 56,2 Volt to reset the SOC to 100% manuel and now it will do it automatic, thanks for that. I like the seplos and I am happy with it since I have bought it last year. I have not such a nice working room like you and for me it is importtant, that the system work quiet in the background, without alarm. Thanks for all Andy and stay online.
I did the test I announced in the last video and the cells drifted apart about twice as much as when I only charged to 55.4 volts. But stay under 80mV im both packs, (my Balancer start work every day if the voltage reach 3,45 v and that help to syncronise my system to low celldrift). I also know Helmut and had email contact with him 6 months ago about the Seplos settings and it help me a lot, thanks to Helmut also.
I tested this, hence I wanted to drive it hard to the charge voltage. Of course, you could sent the OVP higher to prevent that from happening.
The current will taper off quickly at this voltage but is also dependent on how much saturation the cells already have and the general size of the system. I see the potential benefit of reducing the charge current to 10A but here also, it takes quite a while until the current comes down from 100A.
And yes, cells will drift a lot if you charge to higher voltage than the 55.2V (especially if you have done this for a while). That's what I said with camouflaging the 'problem' when charging to 55.2V only. The battery seems balanced but it is not really. On the other hand, as long as no cells start running away at 55.2V, I don't see a problem.
@@OffGridGarageAustralia Yes how much saturation the cells already have and the general size of the system is very important.
🐸🐸🐸
Hi Andy,
is it a good idea to combine the Seplos BMS with a Neey Active Balancer? Greetings from Germany
It will definitely work if the Seplos passive balancer does not work and is too weak. The NEEY will work with pretty much any BMS.
Hi Andy... Great video and thanks with the testing!
I have purchased 4 x 280L DIY kits with the 10E BMS 2.0
I was told yesterday by Seplos that you can't connect these in parallel for communication, is this correct?
My plan is to connect all packs BMS via Canbus to my Cerbo GX and hopefully monitor through Battery Monitor 1.9 as these are all new packs.
Your guidance on dip switch settings and RJ45 connections would be greatly appreciated.
You absolutely can connect them together in parallel. You just need to set the DIP switches right. I have shown both here on the channel many times.
They will show up as one BMS on your Cerbo, perfect, no problem.
@@OffGridGarageAustralia thanks for that Andy.
Just waiting for a VE Can cable replacement. In the meantime trying to figure out the latest Battery Monitor software. Set the correct dip switches, but only able to see the 2nd pack in software. Must be doing something wrong with the Pack address setting.
@@DCAutogen I have 4 of the 280L packs also, 2 per inverter, and also find the PC software will only connect to one pack if the 5th dip switch is on for parallel operation. If you turn off the 5th dip switch both packs are visible on the PC software via a connection to the master.
@@garyhird5382 would this effect Canbus communication though?
Hi
Im watching all of your videos,but have a burning question.
How are you running all of these different battery's to run a single property?
I currently have a full growatt system but want to add seplos.but have no idea how to get it all to work as a single system.
Also do you know if its possible to split the panels to provide power to multiple inverter (thought is if 1 gets full,then it moves to another system)
Thank you for all of these videos
Most of the batteries are only for testing at the moment. As they have all different BMS, it's a bit hard to connect them all to one system. I guess, I can just connect all of them in parallel and use the BSM only for safety purposes, without communication.
Not sure how you would control the inverters and several batteries? So, you want to fully charge one battery and then then next battery?
@OffGridGarageAustralia thank you for getting back to me.
Suppose in short,I'm asking if 1 single solar panel string can be connected to 2 separate inverters? Each inverter will have its own mppt channel.
Seplos bricked? My Seplos BMS is not responding after a firmware update. Has any here an solution for unbrick it?
Hi Andy and get my greatings and thanks from Casablanca in Morocco. Do you think those parameters wouldl work on the 10C with firmware 2.9 or are they linked to the HW?
Thanks and hello to Casablanca. Wow!
The hardware is different but the settings will work in both BMS. You just would not be able to import the settings via the XML file but have to transfer the settings manually into your BMS. The 2.9 will act the same as the 10E BMS.
Can you please share your xml file to convert as xlsx one to take manually all your BMS parameters?
@@photovoltasunnyboy740 I've got them online now on my website under the Seplos BMS.
Great Andy, very reactive❤
Have you also uploaded the updated spreadsheet?
Buenas ,siento ser tan insistente con el mismo tema ,pero tiene que haber un encargado que durante el tiempo que dura la recarga supervise que esta se lleva hasta el punto donde se ha configurado ,tener varios trabajadores con limitaciones de valores de carga crean un conflicto y al final no se realiza el trabajo como uno desea ,tiene que haber un gobernante y los demás tienen que liberar sus protecciones si no siempre habrán disputas entre los diferentes paquetes de baterias
Google Translate please...
Hi, is there a simple list of settings to change to make this work? i have the same setup (mason + Victron) could really do with simple guide with list of settings to change?
Hello, can you give me your settings? I also have a victron in ess
I would like to ask as I jumped on a seplos mason battery after watching loads of the videos. Small background I never balanced the cells prior to building the unit. The seplos BMS seem to shoot up to 100% soc and drop to 0% in 3 mins tried to reduce the charge rate thinking it was over voltage cause it to jump. Tried to manually change the soc to give it some breathing room. Cells are currently 3.15v - 3.27v can see what is going on.
You need to watch the app when charging to see what is going on. Sounds like some wrong settings. The BMS should work as it comes out of the box.
You have done the initial calibration as per manaual?
When plugged in I have 3 cells that shoot to 3.7v in seconds and turns on ov protection.and resets to 100% stuck in loop
The SEPLOS limiting the charge current to 10A is fine. It is the Victron that doesn't honour this by maintaining the charge at 10A in the presence of various loads.
This. With my system (sol-ark) it will do 10A plus whatever is needed for the loads.
@@niktak1114 I have a Batrium BMS. It tells the Victron Color GX to stop charging and the Color GX via DVCC orchestrates the charging devices. But it fails to do so allowing the battery to be discharged even though there is solar power enough to meet the demands.
This is exactly the difference I was talking about off-grid grid connected.
Hi @OffGridGarageAustralia Andy, great videos and help, but quick question, how can i also get the software showing cell instead of monomer and those crazy translations :(
That depends on the BMS version and Firmware you are running on them. Not sure what you have..
@@OffGridGarageAustralia 10e, with 16.6 but im having alot of issues, no correct balancing and the neey doesnt even work. the bms doesnt limit to 10A when reaching the alarm, well quite disappointed with the purchase :S
@@nunofigueiredo9350 do you use communication to an inverter?
@@OffGridGarageAustralia yes, with a goodwe inverter, comunication seems ok, when i reach the high voltage alarm in the cell, from your video it should tamper to only 10A, but mine doesnt and now i have a high runner without a balancer to fix it, strange thing is, the hight runner is also the lower one when going to low voltages :(
@@nunofigueiredo9350 If you're connected to the grid with a hybrid inverter, it may not follow the BMS request to slow down to 10A. I tested it in my off-grid system and it works that way, but others have tested with grid connected systems and the inverter ignores the request.
If you have a runner, there i no way the Seplos BMS can handle that. You either need to manually discharge this cell until it is inline with the others or temporarily connect an active balancer and let it sit over night to top balance again.
If you can check the internal resistance of that high/low battery (pull all BMS cables before measuring). One measurement without busbars, one with. Also compare to the other cells including busbars if there is a difference to this cell.
If all this does not bring any results, a capacity test of 2-3 cells is necessary to check and compare if this cell has actually at a lower capacity.
Hi Andy.
Nice video...
I wonder how satisfied with JK BMS. I have an error "Abnormal Current Sensor" and "Abnormal Release of Current Sensor". But it can only be seen if I connect via Bluetooth. Is there any solution to remove it? Well thank you....
I have heard about this but don't know what the solution is. Maybe others can chip in here.
Is the BMS not working any more if the error comes up?
@@OffGridGarageAustralia The BMS is working properly. I don't see any other problem and error.
what firmware version is in the seplos 10E and where do i get it , also what version of the battery monitor are you using , i have momoner overvolt not the othere
This is stock 16.4 FW on the BMS. Never changed it. I'm not aware if there is a newer FW.
Also, the Seplos software is the stock one from their Google Drive (linked on my website).
If you still have terms like monomer, you may have the older V1 BMS, not the BMS V2/16.4?
Hi Andy, I'm now using your parameter file. However discharging still doesn't work below 53 V package (SOC = 75%). There are no warnings in the SEPLOS BMS. Do you know a limiting parameter in the Victron Multiplus II, that limits discharging below 53 Volts and is independant of the Seplos BMS? Couldn't find such a parameter.
P.S.: I have the Seplos 10e V 16.4 with Bluetooth and use it with the Victron Multiplus II, the EM24 Energymeter. Everything worked fine for 7 month and then the charging and discharging range reduced to 75% - 95% SOC.
Regards,
Andreas
Hello, would you have Andy's file for the parameters of the Bms 2.0 seplos it is no longer downloaded on its site. Thanks
Any idea what the "intermittant charging function" is? Do you have this enabled/disabled? (your parameters file doesn't include on/off settings it seems)
I see an "intermittant charging function" alarm on my 200A 10e once it reachs voltage set in DVCC.
I think it means it will not charge again until it drops below the percentage set at ‘interval charge capacity’
@@jacopo.scarpellini Maybe. This is actually mentioned ni one of Andys other videos, where he explicitly turns this off.
Hello Andy, the settings in this video worked perfectly fore one month until today when, after reaching 100% SOC, it activated the single cell over voltage protection followed soon after by the single cell under voltage protection and the remaining capacity protection with he display jumping from 100% SOC to 0% within seconds.
I thought I might have to reset to factory default but even then when I hold the reset button for 6 seconds, as per manual, all I get is the battery turning on and off within that space of seconds.
So I left the lids open for a couple of hours so that the LED would stay on an discharge the cells not too aggressively and connected it in parallel with a smaller 100A and one of the two inverters (I was going to set them up in parallel tomorrow) hoping that as soon as the alarm was reset it would start giving some of its power to the smaller battery.
And so it happened since the 100A was at 37% before and jumped to 47% in about 40 minutes.
At the same time the Seplos 304A SOC resumed to 87%.
Any Idea how to reset to factory default should one ever need to do so?
Hello, would you have Andy's file for the parameters of the Bms 2.0 seplos it is no longer downloaded on its site. Thanks
@@christophevallet7379 I'm afraid I never downloaded but I think I have some notes, if I can find them I shall post them to you
Thanks a lot , it’s difficult for me to understand
What I don’t understand is why the BMS SoC now keeps growing by 0.1%, like 99.3, 99.4, 99.5
I think it used to get stuck at something like 98% and then ‘jump’ to 100% when one of the ‘100% triggering conditions’ was met. This doesn’t happen anymore on my system so it only ever charges to 99.5% (because the inverter rounds it up to 100% and stops), which might not even be 99.5% because it is not detecting any of those conditions yet
@Helmut: Since you are grid-connected - maybe you want to share your full settings/configuration (Victron+Seplos) for others to try out as well? That'd be great!
I unfortunately don't have access to a computer this weekend and therefore can't put together my Grid connecting-Seplos-Victron ESS System Settings. I will do that in the upcoming week and ask Andy for advice how we can best share this. Helmut
@@helmo5663 That'd be fantastic. I and so many others have been struggeling a lot to get this combination working together nicely. In case you have a SmartShunt and/or a Neey (like I do) that'd also be good to know/include. I reckon through his website would be the easiest - there is already all the drivers, software etc linked next to the different devices anyway. Thanks a lot in advance!
@@helmo5663 I am also interested in this and look forward to seeing how you have it setup. Thanks in advance.
Happy to upload Helmut's file on my website. Just be aware though, he's using V1 of the BMS, the Seplos 10C. But it is an XML file, so all data can be extracted and setup in the V2 BMS afterwards.
We just found out, that the behaviour for the current limiter is different between off-grid and grid connected.
@@OffGridGarageAustralia The more configurations the better :) Honestly - I had a very hard time to find working configurations, despite asking around a lot.
Another idea: Wouldn't it be cool (and a cool community project with potential for sign. impact) to add a kind of matrix on your website (or the GoogleDoc) - different BMS versions, different configurations (island/grid-connected, ESS/no ESS, shunt yes/no) and to collect working configurations for these in this matrix?
If this works the charging algorythm from engeneers would make many sense!
Please TEST and REVIEW 9BB and 10BB solor panels are they worth buying ?? Please. Jjn ...hqst ....renogy... excetra
Andy, do you have what's app?
I ran into a really weird issue with ah and can't get resolved. I have a 2040 ah pack here, and we bms only goes to 599 ah. Any ideas?
What is we BMS?
HI Andy,
I have my Seplos v1 connected to a Sofar ME3000. Was it a setting on the Seplos or the Victron which gives you the 57.00v charging rate ?
That is the DVCC in the Victron system. So, the charge voltage of the BMS sits on 57.8V (which is also OVP) but the Victron limits it to 57V to prevent the BMS from shutting down. Have a look at the pinned comment, this solution provided should actually work with none-Victron inverters.
@@OffGridGarageAustralia I've tried, but no joy as yet. I took what voltages I could see from the video as I watched it through. The ME3000 went into Standby today (from Solar) and last night (from Grid charging). Can you possibly share your parameters file please ? I know you mentioned you hoped to do this, and I'm sure it's just on your to-do list :)
And looking at your spreadsheet, am I reading correctly that I should really be looking to try and find the v2.8 Firmware ? Have you a copy ?
These sort of videos become fantastic resources - so well done. Enjoy the beer - you've well earned it
@@ChampionCCCThanks a lot!
I have the firmware for the V1 on my website. Both 2.8 and 2.9 and you can downgrade without problem, I have switched many times between the two.
I also have some settings on the website as well and you may find the info for the 2.8 in the spreadsheet useful as well. It acts quite differently with this firmware.
The V1 with FW 2.8 is actually the best Seplos BMS so far.
off-grid-garage.com/battery-management-systems-bms/
@@OffGridGarageAustralia From Jerry in Seplos "FW2.8 is specially customized for Victron & SMA. You can try it on you Sofar inverter to check if there are any improvments"
Is BMS 2.0 a better variant to go for than 3.0 from Seplos now?
I'm curious as well
Any suggestions what settings i should use with a solis inverter
That depends on your overall system design and battery.
Would love some feedback from the guys at Seplos on this approach.
Very difficult. I am in contact with the engineers and the biggest problem is the language barrier. I have to break all my questions down to a bare minimum and still get replies which have nothing to do with my question. I don't blame them at all but if you want to compete in an international market, you need to have the communication sorted.
I'm sold on eg4 server rack batteries
Hi Andy,
Ich habe Epever Laderegler und da kann man leider nur die maximale Ladespannung einstellen.
Stand vor dem selben Problem, aber ich konnte es mit meinem Raspberry Pi lösen.
Ich lese das Seplos BMS über RS485 aus.
Wenn die Spannung größer ist als zB. 56V, der Strom zwischen 0 und +0.5A und SOC kleiner 98%
dann sendet das Script an das BMS, dass es nun 100% hat.
Mit diesem Script korrigiert sich der SOC Wert automatisch wenn er wegdriftet.
Dies läuft seit einem guten Jahr so und bin damit zufrieden.
Grüße
Thanks for sharing. But how did you set OVP in the BMS and how do you limit the charge voltage?
@@OffGridGarageAustralia OVP ist im BMS auf 57,6V eingestellt und im Laderegler der Firma Epever ist 56V fix eingestellt.
OVP wird somit nie erreicht und kann nie die 100% triggern.
Im Seplos-Monitor kann man den aktuellen SOC mit der Einheit Ah setzen, weiss leider nicht mehr auswendig welche Parameternummer das jetzt ist.
Im Log des Monitors sieht man dann wie der RS485-Schreib-Befehl aussieht.
Diese Daten hab ich dann verwendet um den Befehl via Script zu senden wenn die Zeit gekommen ist, wie ich oben schon beschrieben habe.
Leider braucht man halt zusätzliche Komponenten damit das so funktioniert. Aber ist immerhin Hersteller-unabhängig.
Grüße aus dem noch sonnigen Österreich :)
Stefan
@@sierra7924 Thanks a lot for sharing, Stefan. That's a great solution!
We have been able to adjust all parameters so that there are no errors such as overvoltage protection etc.
However, the system is not running stable.
It switches off almost every day. Our guess is that it is due to the connection to the Sunny Island.
If the error occurs, it is only possible to charge with 300 watts and discharge with 700 watts.
The BMS can also no longer be reached with the laptop. Everything must be switched off and restarted.
Can you still get onto the Seplos BMS and check for status?
I have 8 BMS installed. In normal operation I can query all BMS via the RS interface.
just not the master
I suspect this has to do with the canbus because SMA only works with CAN bus. To your question, no, no connection.
I also contacted Seplos today and am hoping for help.
Unfortunately I can't find anyone here in Germany who is really familiar with it. The Seplos manual is a disgrace. We decided to buy the BMS based on our tests. If I had known that Seplos was such a shitty club and didn't do any model maintenance at all, I wouldn't have bought the system. I had to discuss a defective USB adapter with the surport for 3 months. I'm currently at a loss as to what else I'll try to do is reach the system via my cell phone.
@@OffGridGarageAustralia
Which BSM for Victron, the Seplos V2 10E or the new Seplos V3?
Either works. The V3 is a bit cleaner to setup and program than the V2.
SOLVED - Andy and other gentleman I did allthe parameters but when I chose in Victron VRM "external control" the smartsolar stop charging... to work I have to choose "optimise without battery life" and I have everything set up to "external control"... any tip? and for example I cannot go above 55V total voltage... 3.4375 V each cell is not enouth... I´m without knowing what to do...
I edited my question because I already solved my issue, it was a value that I had to encrease in DVCC "maximum charge voltage" that I though that was a reading value and I didn´t know that if we click twice we can edit the value, thanks anyway!!!
Hello is there a charitable soul to give me the right ESS settings for a seplos 2.0 battery with a victron multiplus 2
Hi Andy and others? Anyone running the Seplos with Deye hybrid inverter (or Solark/Sunsynk)? The battery V settings interest me (float, absortion and equalization). I think also Deye uses the same CVL as max charge setting (charging to 57.8V in this case)...
One more point, Andy. You did the test on a single Seplos, but I am thinking - if you have multiple Seplos packs in parallel, then the charge 10A and 0A limits do not necessarily work I think. At least the 10A limit not, as inverter still can push a lot more without knowing one of the packs is trying to limit charge to 10A - the BMS still keeps accepting more than 10A, only a hard 0A limit turns off the charge mosfets. For instance with 3 packs, normal charge rate 3x50A=150A would still mean 50+50+10A being pushed to the batteries and the one asking for 10A gets 110A/3=~37A max. The more batteries in parallel and higher total charge A, the more problematic... No?
The charging limits still apply, even with parallel batteries. Each BMS can limit its own charge current to 10A if an alarm occurs. So you could end up with two BMS having no alarm and report say 50A charge current each to the inverter and the third BSM has an alarm and limits to 10A. That would make the inverter charge with 2x50A + 10A = 110A in this scenario.
But you are correct, the BMS itself will accept more current. It only tells the inverter to slow down. If the inverter ramps down slowly or does not react at all, the battery still gets all the current the inverter delivers.
The hard current limiter will only apply if there is an over current protection and then activates the PWM controller on the BMS to limit to 10A. As shown on the channel, one battery empty, the other one full and parallel them. The empty battery BMS limits to 10A with its own hardware and no comms needed.
anyone running the seplos with Growatt SPH 4600 and the genuine Growatt app aka shine wifi ?
Hi Andy. Can you maybe assist? Or anyone in the comment section. I have 2 100ah 16s in parrallel. Both fully charge with 56.4v but as soon as 100% soc is reached they discharge crazy to either 95% / 96%. Is it sot supposed to stop and hold the 100%? I understand it wont stay there the whole day but its doing this over and over almost 5-6 times a day
It is a seplos BMS just to add
@@Void_Void278what inverter are you using?
That is the exact problem!
You may have set the cell or pack OVP as the charge voltage being reported to your inverter. As soon as this hits, it sets the BSM to 100% but also stops charging and all the load is being supplied form the battery until 96% (this is actually a feature called Intermitted Charging Function and can be turned off with the function switch on the right)
I wouldn't feel comfortable disabling the cell over voltage protection. Or is there another "hard off" setting, say 3.7V or so?
I'm running PzS batteries, so I don't have those problems 😉 but I pay for that with a charge - discharge efficiency of around 63%, which really hurts in German winter.
I had the same concern but I saw at 10:45 in the video that the single cell overvoltage limit protection was set to 3,65V 😊😊
Over voltage alarm and over voltage protection are two separate functions, it is the alarm element that Andy disabled.
Sorry, no you got this wrong, I didn't turn off the OVP ( I would never do that and would not recommend it!) but just the cell high voltage alarm/warning. Just the alarm! As soon as an alarm occurs (either cell or pack) it limits the MPPT current to 10A in off-grid installations.
You can still see the cells showing in an orange/brown colours on the left. This is the alarm when any cell is over 3.5V and it still shows this in the BMS but it does not act any more as I turn off the function for cell high voltage alarm on the right with the function switches.
Here is a summary which makes it hopefully clearer:
Cell high voltage alarm: 3.5V (Function turned off, so no action if this voltage is reached apart from the visual colour change in the software)
Cell overvoltage protection: 3.65V (Function turned on and BMS will disconnect if reached with any cell)
Pack high voltage alarm: 57.5V (Function turned on and BMS will limit to 10A charge current if reached)
Pack overvoltage protection: 57.8V (Function turned on and BMS will turn off when reached)
I have a growatt offgrid inverter and it doesn't have that problem
all excess solar is sent to the devices
I also use batteries with serplus bms
Off-grid or grid-connected? That makes all the difference for this function.
@@OffGridGarageAustraliaMy Growatt SPF5000ES have direct coupled PV which goes direct to the AC load. Only the power which is not usable in the house will charge the battery. So the 10A will not decrease on a connected AC power. That will handle the inverter instantly without the DC rail
@@Bjoern___ Is that off-grid or grid connected though?
@@OffGridGarageAustralia hi Andy. OffGridGarageGermany ;)
No Grid connected
If Version 2 is (10E) hardware revision, what is the hardware revision for Version 3 of the Seplos BMS?
Seplos is going away from the 10x numbering convention and using the V1, V2 and V3 now I think. Just from what I saw on their website.
@@OffGridGarageAustralia Thanks Andy! I really appreciate it. I was trying to order this through a vendor and I have no way to ensure it is a V3 BMS.
I guess I can just go through the link you posted, but I was trying to go with a person I have purchased from before.
@@user-gj6eb9nu1l probably don't buy the V3 of this BMS, unless you have an active balancer. The built-in balancer does not seem to work at all. It will be in one of the next videos.
One "problem" that I am observing is the oscillation once the target pack voltage (55,2V in my case) has been reached. I understand that Seplos has not implemented something like an absorption mode in their firmware, i.e. a mode where the battery is simply idle once fully charged. But I observe that the BMS is not simply "waiting" but even actively discharging once it hits 55,2V, down to a lower voltage, which it then has to charge up from again. Is there a way to prevent from the active discharging or is this the default and the same for all of you guys?
Does the parameter ‘interval charge capacity’ help? It’s set to 96% by default so it means it will not charge again until it drops below 96%
@@jacopo.scarpellini You mean I could set that to 98% or 99%? I can try and it would probably help in the sense of causing smaller/faster charge/discharge oscillations.
But what I don't get - why does the Seplos BMS ACTIVELY discharge once the 55.2V are reached at all, only to having to charge up again. Why does it not simply let the battery sit, slowly discharge on its own, and then charge again once the 96% are reached?
@@andreas4175 no, you need to set it lower; if it’s not working then it may be that it needs an alarm or protection triggered
@@jacopo.scarpellini lower... I see. But I think the source of the problem is that the BMS ACTIVELY discharges the battery once it hits 55.2V (my max pack voltage). I have not found a way to disable that yet. Intermittent charging is off btw.
It needs to be on (I think)
Will these settings work with the original BMS version?
Good question!
What is the original BMS Version? V1 with FW 2.8 or 2.9?
Yes, but you need to set the settings manually in the BMS (cannot import the xml file from the V2 BMS)
@@OffGridGarageAustralia original as in non Bluetooth model
Likely 10C, most will be running 2.9 by now. @@OffGridGarageAustralia
Alright, so I adapted the settings to a total charge voltage of 55,2V and it seems to work. The only thing that still annoys me: The battery doesn’t go into permanent „idle“ mode but switches between discharging, charging, idle and so on… I reckon that‘s the Neey doing its job and requiring some charging in between? Or should the battery indeed be permanently in idle mode? If yes, which setting(s) may I have to look at/tweak?
Never mind - it sits at 99.9%, despite being in monomer high voltage alarm for more than 30min. But never goes to 100% / maybe due to the constant state cycling? But the alarm never goes away, I set the recovery value low enough…
Same here with 55,2V total charge voltage and cell alarm at 3,42. SOC doesn‘t reset to 100% and voltage stays at 55,2V. Maybe there is a minimum value for the total charge voltage (for example 56V) as a further condition for resetting to 100%.
@@Julian-lj5qp Could be. Something to investigate maybe @OffGridGarageAustralia?
May I ask which voltages you set in the BMS (ideally all of them)? Will be happy to share mine as well to compare. Next time I go down into the basement.
Does the BMS for you also cycle between "idle", "charging" and "discharging" all the time?
Now it says 100% in the Cerbo... With only 3mV deviation - Thanks a lot Neey! :)
As long as the Seplos BMS doesn't reset to 100%, i turn off DVCC. So the Multiplus charges up to 55,2V (turn on shared voltage sense in Venus OS) with 1h absorption an 53,6V float voltage. It works, but im not really happy with this solution.
How did it reset to 100%? Did you increase the charge voltage to 56V?
Deye sun 8k, seplos 10E. Cannot reach this conditions because seplos tells deye charging voltage if comunnication cable is plugged in:(
So what is the problem with that..
Deye/sunsynk limits the charging to your batteries, but power generated is still fully available for the inverter load.
@andy , wonderful rebound !
I assume the Deye inverter keeps charging until you hit OVP, right? Does it slow down to 10A (per BMS) if an alarm comes up?
@@OffGridGarageAustralia yes it does...
And I like that, gives the balancer time to catch up
@@houseofancients Yes, solar power is available. But the balancer (active 2A) cannot calibrate the battery if I set seplos OVP to 55.2. It stops charging when OVP is reached.
@@OffGridGarageAustralia yes, it slows down to 10A. And stops charging when hits OVP. But I saw a pinned comment. I will try to set it in that way.
Andy, how many frogs???
For what?
Does anyone have a Solis Hybrid running on this BMS?
I'd appreciate shared settings? Thanks
I do, RHI 6k 48ES working fine for two years.
That would probably work like mentioned in the pinned comment.
@@OffGridGarageAustralia I''ve been using between April and August a single 15kw MASON then added a second pack.
The first has worked admirably but adding a second has made them both more stable - think likely that as current has 'two paths', as one gets a little higher it fall in favour of the other as least path of resistance, as well as lower charge current per pack. There has definitely been a change in mV differences while charging for the better with two packs.
Original charging to 3.55v (56.8v) but had gut feeling balancing was not being well achieved so increased to 3.59v (57.5v) which seems to give better balancing over a period by away from 3.65. I think with this BMS we need to live with slightly higher final voltages.
Cell overvoltage is set to 3.55v to reduce to 10amp charging at top end.
I am using a Solis 6kw Hybrid and Surplus while at 10amp, this ends up in the EV and not lost.
How does this compare to others? One thing I cannot work out is on the Inverter, I see Float Voltage 53v and Equalisation Voltage at 58.3v. Setting a lower voltage on the Inverter reverts back so it seems to be getting it from the BMS but unable to find the setting in the Seplos to change.
@@leet3707i have intercepted the CAN messages from the 10E BMS to the solis hybrid, the only voltage parameters it sends are the pack OVP, pack UVP and the present pack voltage.
The inverter uses the pack OVP as the Equalisation Voltage (named "Absorption Voltage" in latest FW update). With some of the inverter battery protocols the inverter adds 0.5V to the value received from the inverter.
I don't think the float voltage parameter on the inverter does anything!
@@frankc6972 that does make sense, thank-you for your feedback.
Everything seems 100%, Inverter and Seplos are happy working together with settings but good to see if others had similar or better. I'm confident neither Packs or Cells will ever overvoltage. So curious as to get the best out of them for as long as possible. I have edged voltages up to give better balancing opportunity since this update and not everyday they are at high SOC.
This Summer, last 5 months, single and dual packs have handled over 1500kwh without issue, saving over £400 against Grid which has been Zero except Flux.
Glad Andy revisited these as wasn't quite sure the Seplos BMS was the best option- but as they stand, the management, monitoring and user control is much better than certain unnamed Branded options with no options to 'fiddle', although manual could be much better. Running a 10E and older 10C BMS together concerned a little due to 10E 'not seeing' pack Voltage high enough to reset SOC 100% which did actually seem to be happening - now we know why - 30 mins. On the whole, I am over the moon with them.
Winter is setting in now, so rather than cycling max Solar, 10%-100%, 40% is now reserved for any Grid supply problems to carry on through as Backup. Next year when our cheap Energy contract ends - will switch to an EV tariff to give cheap daytime Winter energy especially storing enough to push through Air Conditioning for cheap heating against Gas prices.
I think every couple of months they'll be 100% charged for 2 days to give balancing a chance now I now more on the passive side.
Why governments are obsessed with water Heat Pumps when Air to Air is cheaper and far more efficient is beyond me.
Time to move to Australia for 6 months?
Thanks again..