The highest performance fleet charger on the market has 80 Amps continuous charge with 400 Amp crank assist at 12 Volts. 33% more engine start than previous model. Heavy Duty Vacuum Impregnated Transformer, patented "Sub-Sil" multi-diode rectifiers, longer AC cord and DC leads are standard features, for higher performance. UL and CSA listed for indoor and outdoor use, "Safe In Any Weather".