Join Date: Jan 2017
Thanked 50 Times in 49 Posts
Rep Power: 4
Re: Charging outboard battery onboard
Find out what the "start-balance" voltage setpoint is on the internal BMS, and if it can be adjusted.
You need to "float" at the end of the charge cycle, or at least above that V point, long enough to finish getting the cells balanced.
So while you're at it, see if there's a way to see voltages at the per-cell level so you can verify that.
The higher that voltage needs to be the more stressful to the cells, so best to do that phase at a low current.