I am having two batteries of different specs (both, dry cell, UPS/inverter batteries)
Battery A: 12 V, 26 Ah
Battery B: 12 V, 7.2 Ah
I need a 24 V output so I have connected them in series.
My question is, will it damage my batteries?
If the configuration is okay, can I charge the 12 V 26 Ah battery alone? Wouldn't it push a higher current to battery A and keep the voltage at a steady state?
I don't have a 24 V charger, but I do have a 12 V charger. Yes I can charge them both parallely but I don't want to do that as I would have to open up my robot to access the batteries.
P.S. Sorry if it's a silly question. I am not much of an expert in this.