Milwaukee Tool M12 REDLITHIUM XC6.0 Battery 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 giving you more work per charge and more work over pack life than any battery on the market. The rechargeable battery also offers you 6.0 amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0F/-18C. Its compact, lightweight design allows you to work in tight work spaces and reduces fatigue. Built-in REDLINK Intelligence protects the battery from overloads, preventing you from damaging your 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 your battery's life. Switch to Milwaukee Tool REDLITHIUM XC6.0 Battery Pack to instantly upgrade the runtime and durability of your Milwaukee M12 cordless tools.