Yeah, I've been talking to them, and they're wanting me to go to some vendors.
I really want to avoid having to disassemble these myself, there are chemicals in there that are likely toxic, and the burnt wire bundles are likely to cause additional shorts as I work on them.
Yeah… I will take some more pics of one of the batteries next time I open one up. The cells looked pretty different from what I’ve seen, almost like a 16p4s configuration.
This happened dismantling the system. So the starting point was everything connected. This was literally the very first lug I undid (my intent was to defuse the rest of the system by disconnecting the cells).
I was alerted by power going off in the house. Thia system is installed in a garage and there is no smoke alarm in there. I don't remember noticing a smell, though.
I did inspect the cells on this pack and measure them out... I did not see any leakage on the cells themselves. That said - it might be possible that this battery is where the problem started (and resulted in the other two batteries to have the heat/fire issues)...
Will take me some time to...
There’s some detail in the other thread but I can pull this info off the one surviving battery (3 had these kind of failure) when back home. Currently away over the holidays.
Yeah I would have to void the warranty to check individual cells - not excited about that, given what I paid for these things. The manufacturer has sent me instructions to reset the BMS - maybe I'll try that next, it does feel like the SoC shown on the batteries isn't correct, given that they...
Oh interesting. I'm in the process of rebuilding another battery using a Seplos BMS, and the manual does not show a fuse (that I can see). I believe my BMS is a V1 of their 200A BMS, but I don't see anything about a fuse in the manual - do you happen to have a link?
So I just had an insightful discussion with a very helpful engineer from GSL. They believe the root cause here is moisture - condensation on the metal front of the battery runs down the wiring that touches the metal and short circuits the balance section of the BMS.
This hypothesis makes a lot...
Just noticed this oddity on their wiring diagram. Anybody know what to make of this? Do they want me to connect the positive to more than one of the terminals for some reason?
Physically, the board looks like this:
Are they worried that one of the lugs can't carry enough current through...
Nice, yeah, that's a good solution (Andy of Off-Grid-Garage Australia does that, as well, to maneuver batteries). I don't have a jack nor do I know anybody nearby to borrow one (and I don't want to have to find space to store one if I buy one). That would definitely be a nice solution, though...
Long story, but I ended up with extra LiFePO4 batteries. They're Iron Edison and were installed in series, providing 48V to an Outback system. The system wasn't reliable, likely due to an issue with the BMS (it kept tripping every few days, notice the rodent droppings). If you were in my...
I am scratching my head to understand why this is happening:
My setup looks like this: 4 Iron Edison Re-Volt packs in parallel hooked up to an Outback Power Systems setup:
I hooked up a Pi with 4 CAN/USB adapters and some Python code to pull metrics off the BMS-es in these.
The best...