Schumacher PSW-61224 DSR ProSeries 6/12/24V Manual Wheel Battery Charger/Starter Charges 6, 12 and 24 Volt batteries Starting ampere: 24 Volt-150A, 12 Volt-250A, 6 Volt-150A Charging ampere: 24 Volt-30/10A, 12 Volt-60/35/1.5A, 6 Volt-80/40A Precision timer controlled operation with off and hold settings Additional features include: commercial-gauge welding grade cables, heavy-duty steel clamps, rubber grip, and an extra-long 9 foot AC line cord