18V LXT 4.0 Ah Lithium-Ion Battery Pack

Reaches a full charge in only 40 minutes which is two-times faster than leading competitors in its class Fully compatible with 18V LXT and 18V Compact cordless tools that carry the star symbol Up to 35% more run time than the Makita 18V LXT Lithium-Ion 3.0 Ah battery Impact-resistant outer case and shock-absorbing inner-liner are engineered to protect the battery Battery delivers consistent power and run time in extreme temperatures, even in winter 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 tmi4500