20KWh DIY RackMount Backup Battery for Half price
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- Опубликовано: 15 янв 2023
- Fully DIY way - www.pcbway.com/project/sharep...
Or PreAssembled DIY kit - jag35.com/products/3-6kwh-rac...
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That's pretty sweet, you just keep making it easier. I already did a 3kh build with the R5 batteries for my office which I made a video for. My next build will be with LiFePO4, cant wait for those to become more affordable too.
Excellent project. Only drawback is that the scooter batteries are li-ion, which are quite more dangerous compared to the LFP cells the Jakiper batteries use.
@@AllAroundTube50 I too am on li-ions for over 3 years. DIY power wall. But I keep them in the cellar, along with some fine wine, so they behave! 😃
Plus the cycle life is about 1/6th that of LFP so it's about 3x as expensive per cycle
@@niktak1114 li-ions used in a storage project will last a looooong time. Over 2000 cycles for sure.
@@ThanosSustainable Maybe if you only use a DOD of 70-80%. At that DOD, LFP will have 7000+ cycles.
@@AllAroundTube50 $6-6.5k. Or about $3.2k per 14.3kWh for seplos kits.
Thanks for your upload, I have always liked your "cowboy/no fills" apporach to DIY - it resonates with me.
Hell ya jehu always coming thru with the best diy content …NMC is still a great chemistry🙌🏽🙌🏽🐐🐐🔋🔋👑
I would probably drill holes in the back and all along the back install external case fans. This will help keep the batteries from overheating.
Very cool. Unfortuantly I have already bought my scooter batterys awhile ago when we would clip off the white connector and replace with a xt30 to wake up the bms.
This pcbway channel is one of my faves!
THIS is what I want: a cheap system I can add to as I go! Thanks
Points of concern:
1. The front mount lug connector (thru-hole) is only a small air gap between case. Air gaps quickly disappear on flexible frames and tensioned lugs, not counting accidental damage to either, there should be physical isolation there.
2. PCB should not be used for anything structural beyond its own weight. You put high gauge wires on that and you will be putting torque across the PCB, over time it will flex, crack, and likely tear at some point.
3. I don't know the schematic or spec of batteries on that but I have a general dislike of direct connect systems like that. Without a BMS or monitoring like the other one, it almost certainly will not last as long.
No air gap, there’s an isolator, and all these have a built in bms
No air gap, there’s an isolator, and all these have a built in bms
@@jehugarcia Not the pass thru bolt isolation, the PCB face to case gap. Long story short, I can't for the life of me see how that much power, with that much exposed copper, while on that type of support structure, does not violate some sort of safety regulation.
These are li-ion also…
@@diskdrive123 Are you a fire inspector.
Wow great video! Thanks for sharing and answering those questions! Awesome Job 🤓👍🏻
Very informative. I was wondering how to get parts as I might build something similar but different from your designs. Thank you for the video
Very cool! It looks like a fun build.
I would like to see this build as a LiFePo4 48v with the same features. That would be a much better comparison for off the shelf vs diy. Other than that, great video.
LiFePo4 is wayyy safer. I wouldn't feel comfortable with anything else in my home.
@@thekingoftheworld9553 Absolutely agree!
Also, 36v inverters are more uncommon. 24 and 48v seem to be the standard.
I’m waiting for a solid 48v build for sure.
Great video! I really value having a reliable backup power solution at home, especially when I'm out camping or spending quality time with my family. The Segway Portable PowerStation Cube Series seems like the perfect choice with its massive capacity, fast recharging, and versatile sockets. Plus, its waterproof technology gives me peace of mind during outdoor adventures. Definitely considering getting one for myself!
Thank you for sharing your thoughts on the video! I completely agree with you about the importance of having a reliable backup power solution, especially during outdoor adventures and quality family time. The Segway Portable PowerStation Cube Series sounds like a fantastic choice with its massive capacity, fast recharging, and versatile sockets. The waterproof technology is definitely a game-changer for outdoor enthusiasts like us. I highly recommend considering getting one for yourself!
Brilliant I'd keep any whole house or otherwise substantial energy storage out in the garage, even if had to build and heat an enclosure just to be safe. It's a lot of energy and that's always a fire problem. I've just bought a pre made Battery Queen 4.8 kwh at 25 cents a watt, and a EG4 3000 watt inverter, transfer switch, charger to play with before committing to 20kw system and probably PV to power it up (and otherwise power up low load emergency circuits in house. An emergency power system that requires no maint, no fuel, AND pays back a little every year. WOW
You can always repin those connectors if you have the time to do so so all the wire colors match
Definitely worth re-pinning to eliminate confusion (or at least add colored electrical tape to ‘correct’ the mismatch.
5:45 best template dismount ever, almost fell off my chair 💺 🙃
You should do a video on how to discharge batteries during peak demand hours. A big problem in Arizona is the power providers hit us with energy costs that are like 100x during "peak demand hours". We need a solution to charge during cheap hours and then offset demand during peak hours.
Super easy to do, I have a project in mind just for that in the works
@@jehugarcia nice! Need something that can read the wattage being consumed so it can only discharge to offset back to zero.
If you solved this problem it would solve a huge headache for us on SRP in Arizona. They are basically price gouging solar customers during certain hours when the sun is down and we can't generate enough solar to offset our usage. For example, you could have a pv system large enough to offset 110% of your energy usage and you would still have a $100+ monthly bill. That to me is legalized robbery
of course if everyone does it, then that becomes the peak hours.
@@robertsmith2956 - “if everyone does it” then there will be no peak hours and it will just be close to flat rate all the time
buy solar panels and tell the power man to fuck-off with their rate hikes. Been off-grid since 2014 and have NOT paid the power man a single dime.
For half the price you have to diy a battery with a difficult to use 36V, with around 1000 instead of 6000 cycle life (cut from the video) and without any warranty.
That doesn't seem very attractive to me.
Nevertheless I really like your inspiring ideas and creativity on these kinds of projects and builds!
Have you thought about the COST of mailing your warranty battery back for service?
The shipping cost will be more than buying a replacement battery.
You don't need to use scooter batteries, you can use lipo4 ones, and get the 48 volts and 6000 cycles.
Hard pass. Cool project though
36v?
Genetry Solar inverter & walk away happy
Working hard to understand this setup style and concept better. This would be ideal for what I dreamed up in my head.
Built to add capacity more over time.
Love the template idea, but, wouldn't it make more sense to have the spot for the step drill hole be a centering guide for the initial hole?
Great editing as always. Wish more channels would take notice.
What is the plan to keep the battery packs cool when they inevitably heat up inside the metal case that no longer has any cooling fan??
yet another clever idea
Strong Casey vibes in that intro!
Since you have mutiple battery packs, each one with its own BMS, so how can you tell if one or more of the BMS has gone into shutdown? No circuit breaker on the front panel for quick shutdown like the more expensive rack?
Careful with your terminology. That's a 5 battery unit, 19" wide rack. A "Rack Unit" (or U) is a standardize size of 19" wide rack equipment that is 1.75"/44.45mm tall. Common in computer industry, audio industry, telco industry. You can find racks of 8U, 10U, 24U all the way up to 42U. Most will not have wheels on the bottom. Instead they are intended to be mounted to the floor w/lag bolts since they become quite heavy (even when empty), to distribute their weight to floor or platform, and to avoid tip over hazards. You should likely avoid going to tall with a battery rack, because it they far heavier than the typical equipment they are intended to hold.
Really good video. Can you give me a link to the rack that the Jackiper batteries are on please.? Also, any chance of a 48 volt diy build?. Thanks.
Great help, more options.
I like this idea and it seems like a great kit however I didn’t see you using any grommets for any of the metal openings
Very nice concept. Good job. But could you please google PCB mouse bites. These huge break away tabs leave a unpleasant edge. If you do them with mouse bites, you can have the sharp edges sort of sunken in to the edge of the PCB
Great project. My problem is I have a Tesla Powerwall and I would like to have something like this for extra storage (can't run my A/C with one Powerwall) to run along side my power wall totally separate but I don't know how to do that. Also I am not comfortable with NCM batteries in my home (garage). If you could do something similar and save us money but with LiFePO4 that would be great.
that's awesome! Seems like a fun project. fyi, Powerupess lfp rack type systems are 5.1 kwh systems for like 250 per kw. Local in phoenix az, not across the big pond..
Dope stuff as always,would love to see u do an updated powerwall video for say an EV recharching pack
Nice kit.
Since the scooter batteries have their own BMS system can I just leave them plugged in 100% of the time?
I have a growatt infinity 1500 system and it totally has a solar power input
Just trying to think of how I would keep these charged at the same time
The batteries must be giving off a lot of sunlight! 😂
Love the project idea.. but I am concerned about the battery pack.. it indicates they are used batteries.. most 18650 batteries have 500 to 1000 cycle rating, new. I think I read these packs you are recommending come from a brand that is rated for up to 3000 cycles.. but from the link there is no guarantee or testing done to ensure all batteries work/charge, what sort of capacity, etc. With that in mind.. how far of a stretch is to look to purchase/use NCR 18650s or even cheaper options and make your own packs for this kit? I think that would be an additional great option you might be able to share (in a separate video perhaps.. how to make a battery pack for this larger battery solution).. maybe some different 18650 battery options/prices.. and how to put each of the 18 packs needed for this battery kit to use.
Just bought 15kwh from Signature Solar for $4700. 10 year warranty. I'll take the warranty and support.
When power from the grid was a bit cheaper, individuals who had off peak metering would charge their batteries off of the grid and during peak hours they would switch to inverter power to save money. An alternative until one installs solar and wind power.
Use the DIYs with your Grid Tie Inverter to dump all the power Back onto the Grid. Problem Solved for 36 Volts or use them as Explanation Batteries for your EkoFlow / Bluetti / Anker Solar Generators.
Great vedio, the battery which we produced is also great
Interesting…so could put together a full high powered off grid battery setup with these.
Do you, by chance, know anything about Fengchao battery cells? I'm considering buying a scooter that uses them, and I can't find anything about them.
what rack was that? have a link for it? batteries seem to fit good in it.
Heh Jehu, can you do a video of how to connect server rack battery (eg4, jackiper) to charge power station like Ecoflow delta pro? Thanks
You could just buy new lifepo4 cells from 18650batterystore. I did the math. It’s exactly half off if you build them yourself. Either 100ah or 280ah cells. 😊
I really need this in 48v for my sol-ark 12k.
I would love to make one of these and shoot for around 40kwh. Do you have info on how to connect multiple boxes together? Do you have info on how to connect this to an inverter and connect it to your home? What inverters do you recommend? How safe are these batteries after you remove the fan? Could you just move the fan to the outside of the case?
Once this project is made, it would connect to inverters etc just like other rack-mount batteries that have tons of videos here and other channels. Only oddball part to this project is that it is at 36V, so you (probably) won't find all-in-one hybrid inverters at that voltage. But you can certainly find standalone 36V inverters!
Reply: "Wow, the Segway Portable PowerStation Cube Series seems like an amazing backup power solution for outdoor enthusiasts like us! The massive capacity, fast recharging, and waterproof technology make it a reliable choice. Plus, the smart app control adds convenience. Thanks for sharing this recommendation, I'll definitely look into it for my next camping trip!"
what kind a variable power sup do you use?? 11:15 thank you
great work, I was wondering if this battery storage can be used for EV charging?
Seplos Mason kits seem a better bet, at least they are lifpo4 batteries rather than lion. I have just bought 34kwh for just under $7000 delivered to the UK so about $206 per KWh. A bit more expensive but new lifepo4 cells, a quality bms and a lot less hassle.
Good for you
What would happen to lithium batteries in your home , if a carrington Type event were to happen , I’m curious. I read it could cause thermal runaway in the battery
how would you use this to expand your ecoflow delt pro 3600?
Would really like to see a 48 volt system or even a 24 volt system so I could use it with my sol-ark system
Both are coming soon
Fantastic 😊
Love these videos. What kit would you suggest for a 48v solar setup currently using 4 x 48v lifepo4 batteries. I would like to add more batteries to my setup. Thanks for sharing.
Here you go 16 of the LEV60 cells makes 3.8kWh jag35.com/search?q=LEV60
I wish you said it was 36v from the beginning. 😑
Oooooo...
I see some smexy Vdub buses back there.
^.^
So I won't have to worry about the drill bits because I got every type of drill bit.
Awesome 👏
Do you have a link to the $7000 system?
0:33 when you say install into an inverter…is it possible to connect the battery rack to a delta pro which is connected to the home via generator port? What port on the delta pro do i connect the battery rack to? Thanks. I just subscribed 😊
any NMC532 batteries in the market (apparently can last for 100 years if maintain at 25 deg Celsius and charge from 20% to 80% each time.
I'm in a hurricane zone and one day of power for thousands of dollars is not a deal. I'll stick with the $350 gas generator I've used for years. I love solar but at 10.3 cents kWh from my electric company, solar is not cost-effective, either grid-tied or off the grid and don't want a hurricane blowing my panels away.
Is there not a concern for accidental shocking when opening/unlocking the panel door/cover?
Thank you
Hihi. Great video as always. Do you have or can you make a video with LTO cells? We have rotational power cuts about 5 to 8 times a day, so the long cycle life is the only viable option for most bang for the buck. It's hard to find DIY information like your videos anywhere else with proper links too. 48v LTO build would be amazing.
Price for the LTO would be amazing as well. They are low current, so you needs LOTS more of them.
I looked at them and figured $64K in batteries to run the house. If I was still 20 that might make sense. But they would out live me now. 😂
If you have a california grid, AGM might be the best choice.
@@robertsmith2956 I live in South Africa, with our unstable grid and constant power outages 5000 cycles would last me 2 to 3 years. I use about 25kw a day but want LTO due to the fast charging and long life. Need about 6 hours of storage and need that to charge up again in about 4 hours. 3 to 6 times daily.
@@ThePsychoCJ I very much doubt you'd be doing an 80% depth of discharge cycle each time! If you're losing power for a few hours at a time and your pack is sized for your 24 hour use then your discharge is only going to be ~10-15%, set your BMS to keep your LFP cells at 80-85% max SoC and that 10-15% depth of discharge would probably give you 20-30k cycles or more (likely near infinite as LFP would age out before you could push enough cycles at such a gentle use case). This strategy is going to be cheaper than LTO and more flexible as you don't need to care if an outage goes 5 hours instead of 1-2 because it's still not much of your total capacity.
@@andrewfidel2220 thank you Andrew. I'll look into this. Currently power outages has been 10 to 14 hours for the last 6 days. So not getting any better. This is one full outage then we have ontop of that the 2.5 hours off too. I need batteries which can charge fast, 90a or higher with long cycle life. I'll do some research on LFP then decide which will be best.
LTO is overkill for residential energy storage. It will degrade by calendar aging rather than cycling.
You'd be better with LFP. Just make it oversized. If you need 10 kWh per cycle, make it 30 kWh. It will cycle much less because you'd be only cycling between 30%-70% percent range with added benefit of extra energy stored if the grid become haywire.
Both option per the total life of use they are not cheaper. LFP vs Li-on your lose the number of cycles. Then what do you do when the batteries are depleted? Come back for another DIY?
what is a good 36v inverter?
Have you thought about doing a lower capacity 24V version? That would overcome the limitations with 36V if two batteries were wired in series
Careful - the BMS in each 24V battery would have to be designed for connection in series. They usually put such limitations in the small print somewhere...
Awesome, I love the idea of using many parallel ebike/scooter packs to make one large battery. I’m currently writing up my project that used 19x 48V ebike batteries in one large case (~14kWh). The only downside I’ve found is how can we tell if one pack BMS goes down and is no longer contributing current? I periodically check each pack with a clamp meter because occasionally a BMS will time out and needs to be reconnected to power back up. Is there another way we could do this? Would be great if there was some sort of compact “current flow indicator” for DC that didn’t use a lossy shunt.
try connecting a display to each battery/bms pack. The price will go up, but that is how the high quality battery packs do it. One display per bms.
@@uhjyuff2095 Are you talking about a power meter display with a hall sensor for current? I suppose that would be the ultimate. Would be great if a simple voltage measurement could tell if a battery is active, but when in parallel the system voltage is everywhere even when the BMS is shut down.
combine them all in S&P and use a single 250A 48V BMS.
Curious to know what's the weight on one of those Box units complete
18650 is 1.23 ounce. 35 lbs in batteries, the case is 15 lbs plus another 5-7 lbs for wiring, battery cases, PCB, BMS etc. So 55-57 lbs
Please send links to 36v inverters that can daisy chain. I can’t find anything, not even a stand alone inverter. Is there any point to a 36v battery if all inverters are 12/24/48 and above??
those look like my xt60's .. what brand are those .. and are they cheaper than xt60s
You should probably start your video with a full disclosure statement that installing this NON-certified backup battery in your home will absolutely guarantee your home insurer will not pay out if the cause of the fire was due to your DIY battery.
Wonderful project! Too bad it is difficult for EU people to start on it, as shipping your batteries to here will make the whole project not as cost-effective anymore (and some of the parts will also be unavailable from the websites you selected). But it is very inspiring to see how it can work.
Agree! Maybe a video for something in the EU in the future?
Absolutely amazing project.
+1 for a battery source in EU!
they all come form china, rack mount lifepo4 isn't new, i'd image they are shipped to the EU by the boatload unless yall have big ol tarrifs
U can make 16s EVE, CATL.. 280 48V 14.4kWh plus Daly BMS also for around 150Euro/kWh. There is also stock in NL for around ca. 170Euro/kWh?! Check out some German DIYlers.
I live in the states and his website is basically like a candy store for battery nerds. only problem is I'm about 2000 miles from his warehouse so shipping is still pretty high. I was able to get 10 of those packs shown in the video for $240 shipped though, so still not bad. hopefully someone in the EU does something similar with reclaim batteries soon
Super!
2000 cycles. Nice!
I have a question. Can you just leave a couple cells out and make it a 24V instead of a 36V? Everything I have is 24V and i would love to build several of these and hook into the system I already have.
No these are 36v packs
@@jehugarcia thank you
Dude is thorough......
how clean is the power coming out of these or does that depend on the inverter? next question whats the best inverter I want to build a modular battery backup for a future server setup.
Depends on the inverter
@@jehugarcia do you have any recordation's for inverter series or brands?
That’s sweet
Thanks.
Do you have the links for the rack complete setup on the left side ???
I have 2 left hands. Do you sell these readymade including inverter?
Cool
Any of these combos that would be 48v compatible?
I’m working on one now
@jehugarcia why sell the 36v batteries and not mention an inverter we can use?
Any 36v inverter can be used, this video is about the batteries
Because there really isn't one in the size needed to take full advantage of a pack this size. I know he's aware of this, but he has so many scooter packs to get rid of, he's being creative.
Which 36v inverter can you run a whole house with?
Complicated for sure limited to Chinese off brands many with modified sine wave which may not be reliable remember one need split phase 240v
@@RRmelgar seams like the savings is not worth the headache.
@@RRmelgar Actually you could hook 240v devices to it's own 240v inverter.
110v don't care if the other 110 volt socket is 180 degrees off, it only cares about the one phase. You could have them 3 degrees off, and everything will work fine no matter what socket you plug into.
can you do a diy with inverter too ?
When it comes to these batteries i don’t want “affordable” i want reliable…
I had a 13s8p lithium ion BATTERY FIRE in my garage and I 100% absolutely DO NOT think saving a few thousand $ on batteries is worth losing everything I own. Lifepo4 is the only way to go with a pack this large unless you're keeping it in a shed 50+ feet away from you house. If I wasn't home when I heard the cells exploding I would have came home to a concrete slab, within 15 seconds the flames were already 24"x24"ish and I hit it with a 5lb ABC fire extinguisher which killed about 1/2 the flames because even though it didn't put the batteries out it put out everything around the batteries that were on fire. I eventually managed to push the flaming batteries out with a broom and drown it with water.
I was thinking someone should invent an easy rip off the wall disconnect in event of fire 🔥 😂
@Rj a 5kwh battery weighs about 100 lbs, so idk how easy it will be lol
You should make the silkscreen video URL a QR Code.
When are 20kwhr of LiFePo4 be less than $600? These prices are still painful
Go shopping with the rioters. They probably don't even hit the battery isles.
I came across some one selling 3 pellets of oso lifepo4 batteries for 700 is it worth the risk
Interesting concept, but I’m sticking with 48 volt LiPo4 batteries.
The cells in the DIY setup---->Battery chemistry that can catch Fire. The cells in the Jakipur---->Battery chemistry has a minimal chance of fire.
How about building a 24 volt and put 2 together to make 48 volt. Is that possible.
Not with these battery packs but we have other battery packs that can be setup in 24v in that same box, future project perhaps
36v, so any suggested inverter solar charger?
There are online ups from China 1kva 36vdc. Check that out