I have a Stepsaver cart, it's been setting for a couple years. It has 4- 6 volt batteries, I had taken the batteries out an cleaned them up then tried to charge them one at a time with a car type charger set at 6 volt.
It started to charge at about 15 amp, the longer it charged the higher the amps. after about 2-3 hrs. it was charging about 40 amps and the charger was kicking on an off (over loading the charger). The battery is reading 5.8 volts.
Any battery that I have charged, the amps dropoff as the battery charges, not go up.