Powered by FUEL technology, the M18 FUEL 1” 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 PLUSIntelligence integrates full-circle communication between tool, battery and charger to protect from overloading, overheating, and over-discharging.