Some chargers have a motor drive feature. The old ICE had it, adjustable voltage with amp reading and a timer control. Up to 8 volts and 8 or 10 amps I think, don’t remember for sure.

Among current chargers iChargers have it, with more power depending on model. Up to 15V and the amp rating of the charger I think. Might be worth checking out, would be an all in one deal with a solid charger too.