Makita BL1021B 12V max CXT Lithium-Ion 2.0Ah Battery Lithium-Ion battery delivers longer run time and lower self-discharge Features an integrated L.E.D. battery charge level indicator Compact design for less weight Part of the expanding 12V max CXT tool series, combining performance with superior ergonomics in a compact size Use only with Makita chargers DC10WD and DC10SB