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I like how she is learning about the wheel, it is very good

Whilst I understand you wanting to keep the same battery packs, I think it would make your channel more interesting if your had a different battery manufacturer to those you already have Sarah. It will, or may show some challenges to achieve this, but that is what its like out here in the real world. I have 2 Seplos Mason battery connected together and one is 10% down compared to the other. So the battery that is not getting a full charge is a bit of a concern, as I haven't even reach 300 cycles yet. So it would seem I have a bad cell in that battery pack, but I have no clue on how to find out which one it is!! Ken in Wales. Edit; I like those cut off switches, but not so keen on those loose cables dangling down, if you court it on something it could pull the cable out of the terminal. ( this happen to me once) You need to clamp them onto the wall.

Very neat system & setup, set your grid point to around -60w, that way it will save a pound or so a month 'leaking' electric from the grid.

Good job, just a quick observation on your crimping. It’s clear to see that your crimp already meets the 2 metal blocks. Though you still press 3-4 times your handle. That will not do any more crimping but it puts lots of stress on your hydraulic system as the only way for the oil to escape your pressure is the valve or the gasket. Also a 2nd crimping is often explained as moving the clamp by 1/6 to then press again and it will also clean out the sometimes buildup sharp edges.

Thanks Sarah might be an idea to remove / tape your ring when elbow deep in the battery just in case and does the bms need re setting to your parameters ?

Excellent work, it's really fun to watch you analyze and solve problems!

I'm wondering if it didn't turn off initially because of the canbus cable. Also great that you took your watch off, but i would be more wary of your rings, assuming they are metal (Gold) either tape them up or take them off.

A point on the anti staic bags, they are only protective on the inside, the conductive layer that creates the Faraday cage is painted on the outside so laying circuits on antistatic bags can short components out, so I would not recomend doing it, I hope that helps,Take care D

Thanks for sharing, we will move forward and provide more easy energy products for our customers!😁

I buy used lithiun that don,t work re placed the bms and replace them with a 8 to 10 amp balancer and they work fine, the controller and the inverter takes care of the rest, some of the bms are over 200. and they go bad poor in FL

Check the other standoffs, some boards make a shortage to the frame.

quick solution that doesnt need a 3d printer, go to your local pound/euro shop and buy a cheap platic chopping board, and cut off of it a piece that is wide to fit in the gap, and superglue it into place where the weak spot is,you might need 2 pieces superglued together to get the same height as the standoffs though, a quick non conductive solution, and if your careful you will still have enough chopping board left to slice a french stick on :) :)

Great work! Love watching your videos. You're using the quattro as the inverter, yes?

Please remember to disconnect all cables from the battery poles and remove any metal objects you are wearing.

After flipping the switch on the wall you measure the voltage on the battery, disconnect the cables front the frontpanel and remove the busbar between cell 8&9. Then you proceed to work on the internals.....

Have you considered removing your ring when working inside one of these units?

Why are there all those red wires down the middle of the battery?

Over time the two batteries will become equal again.

Board? get ride off this board install a JK BMS and a active balancer .

Can you see both your batteries on the Cerbo? I can’t with my two Seplos Batteries but I think it could be a BMS or Cerbo setting?

+

You can also upgrade the batteries without having to replace the case and BMS.

Great job on the thumbnail!

i have used these DC breakers and they are rubbish.If you looked inside you would cry.The ones i had the switch froze one day and never worked again.I have now got the round ones you showed and switch the live first then the negative to switch off.When turning on negative first then live.I used a sharpie pen to color the knob black

Based on some of the previous comments, a possible upgrade could be to keep your new isolators, but replace the lynx power in with the new lynx class t power in (m10). You would need to widen the m8 holes in the lynx shunt to connect to the new power in. You could then add two 200 amp class-T fuses in the new power in. This would protect the system from a discharge rate above 0.6C from each battery. Your 70mm2 cable is rated at about 192 amps, so it should survive.

I have been enjoying the “Warts and all” presentation approach of your videos. I think I learn more from the mistakes than from when things go together easily. Please continue to show the good, the bad, and the ugly! I have binge watched (!!) your playlists more than once, and I hope you create additional playlists for the solar panel install series and the wiring the system series. Between this channel and the off grid garage, I have all the solar infotainment I need . Thanks! Keep making fantastic videos.

We are in the same boat. Independence from the grid is #1, then savings. We are the opposite as far as winter/summer consumption. We use much more in the summer. We are pretty close to independent with 9kw inverter, 9 kw solar, 30 kw battery. I think that with 12kw solar and 40 kw battery along with a few more insulation tweaks and we could be free from the grid.

Link to knipex cutters ?

You took your watch off but not your ring! I have seen the carnage a ring can do after contacting 48V and it isn't something you want to experience!

You could cut some plexiglass to make terminal covers. I like to be able to see the connections. You are quite handy, Beautiful setup you have there👍👍

Those MCB's should have a rubber separator that goes between positive and negative terminals, at least mine came with separators for the up and down side, and it looks like yours have the same groove to slide it in.

Congratulation to this system and the best on this project: Your are the builder!

Put the roof full with solar panels and then you have power enough ;-)

I‘m on minute 17 and didn’t know the rest of this video but I believe the cable extension is a little bit too long. Your „16A“ cable is 3x 1.5mm2 or more? When I must extent the cable I had select 3x 2.5mm2 because over the total length of the cable you becomes a fall down of the voltage on heavy load. The second issue is when the short current value is less than 80A to trip the MCBs on failures . In Germany it‘s recommended that minimum of 105A short current for a secure MCB trip.

I have such a braker with 630A rating. They also have a electromagnetic coil to trip it from my BMS

I really like you sharing your install. it good inspiration how to do it. Just a few tips as I work as elektrical safety inspector in the netherlands. (rules in UK are bit different). 1) I like what you are doing with the DC breakers however because of the extreme high amount of short circuit current Lithium batteries can generate when shorting due to very low internal resistance it's very possible the Uimp rating of the breaker is to low and so it could just blow and weld together so power is not cut. I always recommend to install fuses since they have way higher breaking capacity. for Lithium batteries Class-T fuses are the best. Victron has a new version of the lynx distributor on the market where you can fit Class-T fuses, I replaced my old distributors with the class-T variant. You can use the breaker as double pole isolator switches but don't rely on them for handling shorts. 2) when operating these breakers with high amp loads you should have the live parts covered or use PPE when operating, it can certainly go wrong so maybe you find a way to install the breakers in an enclosure. Maybe they fit on Dinrail? 3) it might be advisable to make a shutdown procedure and have it on the wall for anyone to know what to do in an emergency. 4) i don't know if you have access to a good quality IR camera, but when you are finished it might be not a bad idea to do some thermographic inspection on the connections when under full load to make sure you don't see hotspots. Do enjoy this lovely set-up I just wanted to share some tips from my experience in practice.

Where do you have so many electronic & electric know-how!?? I‘m believe that I had many experience in electrics and computer science (programmer, network specialist, unix pro) and running an multi stage emergency power system based on some inverters but I repeat me I have never seen so many knowledge. My wife is very interested in some technical things and was teached by me to work on electrics but this not on level like you 😱

🥳 nice workaround

🤣🤣🤣 Crazy … I use many times MDF and I believe this type of „wood“ can resist some things

The victron is single or three-phase?! I‘m a Deye fan and in Germany we use three phase and I believe in France the same but sometime I have seen in other videos that people’s in Europe countries using only single phase. Enough words I must follow the video above. At now I watch some „hours“ of your videos and can stop 😂

Wow 😮 if any what you not can do or repair?! 😅

Sarah so many work to do … I look at the moment one video after the other. You describe your work very good and I‘m not a native English speaker but I understand 99% what you say. Thanks for your updates and regards from Germany (the best German ever 😂😂😂) SH

finally !!! a realist !!! no green energy talking shit ! just practicality and energy independence ...... i just like a woman materialism sense , it is how you build a family ..... if you can make it bigger and aim for energy independence ..... it may be late for me to tell you this (i have seen the battery backup ) but go for hybrid invertors at best if not of grid and under no circumstances for on grid only and if you are ever going to use micro invertors (i dont think you will need to) just use them as a supplement during the day ..... be great !

I have also two Seplos BMS (but another type; version 3) and it‘s very important to follow the installation instructions. When you connect in the false order the cable you can destroy the BMS. In my case I have connect the white cable first and the BMS has a big ARC on the connector. The BMS was damaged. The black sensor cable must first connected and then the white cable and at the last the B+ cable in my case. 😅

Good work like a professional 👍🏻 Best regards from Germany

Hello, Be careful with these isolators, they are directional (there is an arrow). I have connected the battery on the top and the hybrid inverter on the bottom, as it is they main risk (unlimited current from the battery), protection from current flowing the other way is less important as it will be limited by the electronic components. If you have separate charger/inverter devices, you should use 2 isolators, one for each direction of current (and connected together on the battery terminals). It has to do with the way there are dealing with arcs.

It is just 20usd here in philippines

You should search for ring terminals with specification DIN 46235.

For ring terminals, Klauke is a very good brand, looks like the bell shaped ones are from them. The only thing is, they do not recommend to use hexagon shaped crimps for flexible cable.

I suppose there is some sort of terminal covers for such type of breaker (i.e. plastic cover to seal terminals away of unauthorized access)