18 V MAX XR Li-ion Cordless motor that delivers superior performance and maximum run time. The drive is safety by quickly stopping the motor speed. Its compact and lightweight design keeps you ready for what's next. Tthe fastest charge times in their categories, so they spend more time working and less time sitting on the charger.For improved tool performance and extended battery life, Makita created Star Protection Computer Controls. Star Protection is communication technology that allows the Star Protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating.