2-Pack Makita 18V LXT 4.0Ah Lithium-Ion Batteries w/ Rapid Optimum Charger Starter Pack (BL1840BDC2X)

Build your own Makita tool kit with the 18V Battery and Rapid Optimum Charger Starter Pack (BL1840BDC2X). The Starter Pack includes two 18V LXT 4.0Ah Batteries (BL1840B) and an 18V LXT Rapid Optimum Charger (DC18RC).Makita offers over 350 cordless tools that utilize 18V lithium-ion batteries, most available as "bare tools" (tool only, no batteries or charger included). Pick up the Makita Battery and Rapid Optimum Charger Starter Pack, then purchase the 18V "bare tools" you need to get the job done. It's an ideal way to start building a Makita LXT Cordless System.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 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.For improved tool performance and extended battery life, Makita created Star Protection Computer Controls. Star Protection is communication technology that allows the tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating.