I’ve seen people ask how to discharge a lead-acid battery, which is easy enough.
I have a lead-acid battery that I must have connected to my on-board boat charger backwards. It must have been very dead, because it reversed the polarity. I know to reverse it back, I’ll need to discharge the battery pretty completely.
My question is how much damage is this going to do to the battery? Is there any other way to reverse this polarity without discharging completely?