Schumacher PSW-3060 DSR ProSeries 300/200/60/30 Amp 6/12 Volt Manual Wheel Battery Charger/Starter Charges 6 and 12 Volt batteries. 600 amp heavy duty Starting ampere - 12 Volt- 300A, 6 Volt- 200A Charging ampere - 12 Volt-60/30A, 6 Volt-60/30A Built in load tester Additional features include, 2.25 hour timer, oversized selector switches, clamp holder, rubber grip and an extra long 9 foot AC line cord