Makita OEM DC18RC Charger & 2 BL1830 3.0 Ah Batteries Industry leading charge times of 15 min. (Compact Battery) and 30 min. (LXT Battery) During charging , the Rapid Optimum Charger monitors actively controls current, voltage and temp. Rapid Optimum Charger has a built-in fan to cool the battery while charging Rapid Optimum Charger is ENERGY STAR qualified includes 2 x Makita Bl1830 3.0 Ah Lithium Ion Battery