48 Volt 6 Amp DC Pulse Charger, with a two stage charge system for when your batteries are flat. It will trickle charge at 250mA until the batteries get to 30 Volts, and then will bulk charge at 6 amps until the batteries get to 48 Volts, then it will carry on trickle charging until it reaches its terminal voltage of 54.4 volts. Also has a kick start button for starting the bulk charger early.

48 Volt 10 Amp DC Pulse Charger, with two stage charge system for when your batteries are flat. It will trickle charge at 250mA until the batteries get to 30 Volts, and then will bulk charge at 10 amps until the batteries get to 48 Volts, then it will carry on trickle charging until it reaches its terminal voltage of 54.4 volts. Also has a kick start button for starting the bulk charger early.