question

dgorman avatar image
dgorman asked

System is charging overnight with no charging equipment

Hi,

I have a strange behavior that I’m hoping someone might be able to help out with. The system is showing charging and SOC is going up when I have nothing charging. I have 8x100 BB batteries, Victron Quattro, MPPT, 2 CSLs for the batteries/Quattro and 4/0 cable everywhere. Battle born has confirmed that my “perfectly balanced “ wiring is correct, and my shunt is wired correct as well. My BMV and Quattro settings are correct too.



battery charging
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2 Answers
Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·
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ben avatar image
ben answered ·

Definitely do a current calibration first.

Find a friend with a DC clamp ammeter and get a “second opinion” next, if that doesn’t fix it. If you see current at the shunt that way when you expect 0A, keep measuring until you find the culprit.

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