Makita LXT 18V Lithium-Ion Battery and Rapid Charger BL1840DC1

Features: Battery delivers consistent power and run time in extreme temperatures, even in winter (-4F/-20C). STAR protection computer controls allow the tool and battery to monitor conditions during use and exchange data in real time to protect against overloading, over-discharging and overheating. Impact-resistant outer case and shock-absorbing inner liner are engineered to protect the battery. 16 contact terminals maintain a constant connection with the tool to help prevent power loss or fluctuation, even during high-vibration applications. Built-in fan circulates air through the battery during the charging process to cool the battery for faster charge time. Rapid optimum charger communicates with the batterys built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperature.