The Makita 18V LXT Lithium-Ion battery charges faster and works longer than standard Lithium-Ion batteries, giving you and your cordless tools unmatched performance and productivity to take on the most demanding applications. The Makita 6.0Ah battery, model BL1860B, combines more run time (two-times more run time per charge than the Makita 3.0Ah battery) with a category-leading charge time of only 55 minutes so it spends more time working and less time sitting on the charger. For added convenience, it also features an on-board L.E.D. Charge level indicator to monitor battery charge. The 18V LXT 6.0Ah battery is compatible only with Star protection tools, indicated by the Star symbol and/or Yellow battery receiver under the tool. There are over 125 Makita 18V cordless tools with Star protection, and more are on the way. Makita 18V Lithium-Ion batteries resist self-discharge so they’re ready for use even after long periods of storage. The Makita Rapid optimum charger (sold separately) is a smart-charging system that communicates with the battery during the charging process to monitor current, voltage and temperature. This advanced charging technology helps optimize battery life and deliver a faster charge. In addition, the charger has a built-in fan to cool the battery for faster and more efficient charging, even in hot weather conditions. Note that model BL1860B-2 is a two-pack and includes (2) 18V LXT Lithium-Ion 6.0Ah batteries.