My
lawn mower battery and
charger both died and replacements are hard to find. I got it running with three 12V batteries but I'll need to charge them.
Is this running in series? If so, do I charge all three by connecting a charger to the far left and right terminals? Can/should I charge them separately? Do I need a 36V charger?
For bonus, is there anyway I can make my own charger using the proprietary plug so I don't have to remove the batteries from the case every time?