Charge 2x 12V batteries in series with a 24V charger?
I operate a solar system with 2x 12V lead-gel batteries 80AH of the same type and age connected in series, i.e. 24V. The two batteries were previously in an e-scooter where they were charged together with an 8A charger. So: The two batteries were always operated and charged together in the scooter and in my…