ok i just bought the lrp quadra pro 2 charger for a steal and its a 50 watt charger that can only charge at 5 amps at its max. its ok for me because thats what i charge at anyways but this charger only charges 3.2 amps on a 4cell 5000 this is straight off the wall by the way. if i put this on a 14 amp power supply will the charger be able to charge at 5 amps continuous? if so where can i get a cable that can hook into a power supply? it only has the 3 prong for the wall.

thanks in advance