Powered by FUEL™ technology, the M18 FUEL™ 1” SDS Plus Rotary Hammer delivers faster than corded speed, corded durability, and all day work on one charge. The Milwaukee POWERSTATE™ Brushless Motor Provides 1.7 ft-lbs of impact energy, 0-1,400 RPM, and 0-4,900 BPM. The Milwaukee REDLITHIUM™ XC5.0 Battery Packs (sold separately) provide all day work on one charge, 20% more power, and 2X more life than standard Lithium-Ion batteries. REDLINK PLUS™Intelligence integrates full-circle communication between tool, battery and charger to protect from overloading, overheating, and over-discharging.