Makita BL1820 18 Volt 2.0Ah Genuine Lithium-Ion Battery (4-Pack) Provides up to 50% more run time per charge compared to the 18V 1.5Ah battery (BL1815) Extended Run Time; Powers 18V LXT and 18V Compact Tools Reaches a full charge in 25 minutes or less on the Makita Rapid Optimum Charger (sold separately) Compatible with all Makita 18V LXT and 18V Compact cordless tools Battery delivers consistent power and run time in extreme temperatures, even in winter (-4DegreeF/-2