Makita's DC18SE Optimum Automotive Charger is compatible with 12V DC sockets found in most autos and trucks, and charges slide-style Makita Lithium-Ion and Ni-MH batteries. The charger will charge an 18V LXT Lithium-Ion 3.0Ah battery in only 60 minutes, and an 18V Compact Lithium-Ion 1.5Ah battery in just 30 minutes. The chargerhas a built-in fan to cool the battery and produce more lifetime work.