All IBE GPU models are designed with simple and time-proven controlled-reactance transformer and saturable reactor circuits, which requires the least amount of AC power, little or no maintenance and provides a true, constantly tapering charge. The IBE charger is regulated by the “ON CHARGE” battery voltage to control the output DC current. The charger is protected against overloads, short circuits, line voltage surges and reversed battery connections. Design features include full magnetic control that automatically allows for full taper charge from high rate to maximum safe finish rate. The charging rate is easily re-adjusted to accommodate aging batteries or batteries with faulty cells. 10-year limited warranty. Volts 48 AC kW required 9.3 Max DC Current Start Continuous 150 105 Weight lbs 196