Over Voltage protection for full charge battery

It will just overcharge the battery

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Yeah, I’m on the team let the battery overcharge a bit but let me stop

On reality you only need to worry about it if you always start riding from the top of a hill

While going over 4.2 V increases degradation, doing it for a few seconds at most won’t to anything really on normal use

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Yes. Agreed.

I’m not sure if I’ve ever overcharged my board. Keep thinking about adding a logger, but in two years the only issue I’ve ever had is vesc overheating. I didn’t put a bms in my main board. I just check the voltage of each p group manually, and still do from time to time. I haven’t found one group off balance by even a 100th of a volt in 2 years. I found that really surprising.

It used to be in the same setup area as all the other voltage and current limits. I’m looking at the most recent version of vesc tool and I don’t see it in there anymore.

I would personally just not charge to 100% (4.2v/cell), and leave it at that. If you have a charger with a metal shell/case, you can usually open it up and find a couple potentiometers inside to adjust the output voltage and current. If you don’t, adding a couple diodes in series is a viable alternative. Just make sure they’re rated for the charge current the charger can supply.

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