The MILWAUKEE M12 REDLITHIUM XC6.0 Battery Pack delivers up to 3x 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. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0°F/-18°C. Its compact, lightweight design allows users to work in tight work spaces and reduces fatigue. Built-in REDLINK Intelligence protects the battery from overloads, preventing users from damaging their cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. An integrated temperature management system and individual cell monitoring help to maximize battery life. Switch to Milwaukee's REDLITHIUM XC6.0 Battery Pack to instantly upgrade the runtime and durability of Milwaukee M12 cordless tools.