Also watch it closely for amount of self discharge for a bit.
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When you saw it was this low, why didnt you charge it?
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Benjamin is like the battery version of CPS
Battery Protective Services coming to take your battery away
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I was just heading out on an other board, connected to the wrong BMS and saw it. Noted to myself that I should charge it. And completely forgot about it when I got back home 
Yeah that’s a fair point but a good sign nonetheless. Charged it up to a bit above nominal now as I’m heading out for a vacation. Will see how self discharge is when I come back. Need to swap drivetrain on it or at least inspect thoroughly before I want to charge it to full, as the hubs are acting a bit weird on it. I suspect I might have gotten them a little too hot.
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I have a 3s1p pack with reclaimed cells of low quality, to power 12v fans or leds. It has a bms with only high or low voltage disconnect, no balancing.
Twice when using it, I let the fan run until the bms kicked in, while also connected to this 7cell ‘capacity’ checker.
I didn’t see the exact moment the LVD kicked in, but sometime after the one low cell was 2.65X v, the other 2 were still 3.15v or greater.
I didn’t disconnect this ‘capacity checker’ though, and some 12 hours later or so that low cell was 2.373, the other two still 3.1 or higher
What I learned is the capacity checker’s drain, is bigger than expected, and there is so little energy left in a cell under 2.65v rested that self discharge and the smallest load can far too easily and quickly drain it below 2.5v.
I hooked 3s battery to a power supply set at ~ 9.4v and 0.2amos max and the 2.34v cell was basically nearly instantly over 2.5v, and I bumped voltage to 12.35 and amps to 0.90 max.
I’ve been cycling this battery without issue since. I only charge it to ~12.3v and never leave those ‘capacity checkers’ connected anymore.
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LURKERS NO MORE @nrgbistro @unknownuser
From the depths of the shadows straight to the battery builders club!
I took these two on an off road ride; they became convinced they wanted top box mountain boards.
I’ve ascended beyond level 4 battery builder @BenjaminF . At level 5 I am now able to generate new battery builders. Suck it you fuckin duck 
Big thanks to @Jmwilson22 for lending me your spot welder ! Being able to have these two guys weld side by side and share notes was a huge help!
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on the right battery is there not even fish paper in between those pgroups?
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Probably if there is fish paper here it is in the other areas of concern too. Just not visible from that angle
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Ugh I knew this would get knit-picked. I promise there is a gap that will not allow the cells to rub. There are two strips between each pgroup I made certain.
It’s very funny I told these guys this exact thing would happen. This is why we post here. Gotta stay vigilant thanks everyone for your concern.
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Level 6 is using super glue to connect balance leads…not sure if I’ll ever get there
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Years of training to get there, I bet you can if you believe in yourself.
Super glue on super glue off
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Now now, lets try to keep the super glue out of this 
it only leads to trouble!
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Super glue is doing great.
Super glue on balance wires, in potted lifepo4 cells aren’t going to possibly cause a fire in a crash.
Not using fish paper fully between groups… we can’t say the same. But you promise there’s a gap and they’re not touching with ur two strips. Bwahhh!!!
The irony is touchable.
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But I have to have the current start at the top and go to the bottom so the whole pack drains evenly. And then I’ll take another copper sheet bolted to the bottom and then put some insulation in between the rest so the current flows back up to the top
I wonder why he feels the need to do this?
Bc he doesn’t know lol
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