Help with wiring 12s BMS [Dead P Group, again]

Awesome thank you!!!

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Also curious about this @Skyart

I am actually not jumping those, that was a mistake I drew on there out of my confusion lol

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@thisguyhere hey bro does this look right? Assuming my series connections are correct.


Also where do add my charge port?

@thisguyhere can I add it like this?

um…that doesn’t look right, give me a bit, will have to look at it closer.

i’m moving real slow right now, in the middle of an epic flu.

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Ok so I fixed the mess I have above and I used the diagram you sent me to wire up the bms, and when I charge the battery it charges to 45 volts lol…with my 50.4 volt charger…what could be happening anyone know?

one of your P groups is probably low, out of balance, or worse, dead.

measure your P groups:

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Dang bro, you were right, dead p group…know anyone with 6 - 30q cells?

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Like the title has been changed to, looking for 6 - 30q cells

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Uuuugh! So not sure if I have a bad bms or I wired it wrong somehow, but it’s the second time I find my 12th p group dead

@thisguyhere @PrivacyDoctor anyone know what’s up?

Replace that BMS. Faulty.

If you replaced the entire group, it’s odd. Might be the BMS indeed. Unless it is somehow sensing a lower voltage for the last group… but that’s most likely a fault of the BMS.

Sounds like bleed resistor is on

Is this a bms I sold you? If so, I’m sorry but it’s like that sometimes, you get a bad unit. I have a box full of shit bms

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Yeah that’s it. Ok I will get a new bms

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Was it the bms

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Not sure what tbw is

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Was it the bms

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Yes the bms had a faulty resistor circuit that drained a pgroup completely