Schumacher PSW-22 DSR ProSeries 225/125/40/20/2 Amp 6/12 Volt Manual Wheel Battery Charger/Starter Charges at 225A(12 Volt) Engine Start / 125A(6 Volt) Engine Start / 40A(12 Volt and 6 Volt) / 20A(12 Volt) / 2A(12 Volt) Ammeter, 2.25 hour timer and fiber glass clamp rod included on unit Automatic Overload Reset and Short Circuit Protection High efficiency fan cooling system UL approved