Schumacher SE-3612 2/40/200 Amp Manual Wheel Charger Are stud-mounted and made of heavy-duty silicon diode rectifiers Equipped with cooling fan for high-performance and long life Accommodates both 6 and 12-volt batteries 2-amp trickle charge charges a small 12-volt battery in 2-12 hours 40-amp charges in 1-3 hours This product cannot be shipped to Oregon or California Not compatible with the WM-12 or EC-25 quick connect cables