I have a Trip Lite UPS that has two 12-volt 9 Ah batteries in series that I need to replace. I have an 8Ah and a 9Ah batteries on the shelf. What would happen if I were to connect these in series?
I wouldn't either, if I could possibly avoid it! But it wouldn't do any harm provided that the voltage of either battery doesn't exceed its boost charge voltage, and the current doesn't exceed C/5 of the smaller one.I would not charge two different Ahr batteries in series.
by Duane Benson
by Aaron Carman
by Aaron Carman