I have an electric scooter with a brand new 24 volt battery pack. When I charge the battery the voltage gets as high as 28 volts or more. I bought a brand new charger that has a 1.8 amp output rating. The charger light stays red while charging and should shut off when it turns green. So far I have not let the charger charge until the green light comes on. I am concerned that I am overcharging the battery. Right now my multimeter reads 28.48 volts. Is this normal? Thanks in advance.
You sound like Steven Wright: I bought a pack of batteries, but they weren't included, so I had to by them again. AA
28 1/2 volts doesn't worry me; many sealed lead acid batteries charge to more than 2.3 volts per cell. At 29 volts I'd get concerned and at 30 volts I'd call it quits. However, the real issue is whether the batteries are getting hot. If they are just slightly warm they are still converting the energy to chemistry, but if they develop a fever (call it above 110 F) they are just turning the charge into heat they are fully charged.
