The MILWAUKEE M18 Brushless 7-1/4" Circular Saw delivers up to 40% more power than circular saws with brushed motors while providing up to 30% more run-time. The Milwaukee built motor, REDLINK electronics and REDLITHIUM XC5.0 battery provide more efficient power delivery, more power and fewer trips to the charger. With 5,000 RPM the 2631 provides smooth cutting, and at only 9.0 lbs, it is lighter than most corded saws. The 7-1/4" Brushless Circular Saw also features an integrated rafter hook, magnesium guards, an aluminum shoe and LED light. The MILWAUKEE M18 REDLITHIUM XC5.0 Starter Kit delivers up to 2.5X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics, and performance providing users more work per charge and more work over pack life than any battery on the market. The rechargeable battery also delivers users with 5.0 amp-hours of runtime.