The title is pretty self explanatory, the battery says “Constant voltage charge, voltage regulation (20degreesc)” its a sealed lead acid battery 12v 7.2ah. The second battery says constant voltage charge 20c except this one is 12v 12ah. What’s the best way to charge them? Also is there any way to use this as a storage medium, because I’m making a machine that’ll use an electric scooter motor, and it doesn’t need to move anywhere so is there a way to use this and have it constantly plugged in, maybe with a smart charger? Basically can I use these and have them fully charged at all times without ever draining them fully. The only reason for this is the motor requires a shit ton of amps and only 24v which I’m not sure I can get from any wall adaptor or anything other than a massive transformer. Final question, these batteries are very old so is it worth trying to use them or just get new ones.