The Makita 18 V 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 5 Ah battery has a category leading charge time of only 45 min, so it spends more time working and less time sitting on the charger. The 18 V LXT® 5 Ah battery is compatible only with star protection tools, indicated by the Star Symbol™ and/or yellow battery receiver under the tool. Makita 18 V lithium-ion batteries resist self-discharge so they're ready for use even after long periods of storage. The Makita rapid optimum charger 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.