Thanks for all that information and I think you're right about advising sticking to lower voltage batteries
rather than a new charger.
On bumping the cell count up or down I'm very interested -Is this normal practice? and is it relatively easy to do?
perhaps when a cell is down beyond recall ?.
I just mean rather than running the robot on 9S you run it on 8S or 10S so you can buy 2 matching smaller batteries (2 4S or 5S rather than mixing a 4S and 5S). Just makes it a bit easier to deal with.
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