Delivers upto 3X more runtime, 20% more power and 2X more life than standard Lithium-Ion batteries. The M12™ REDLITHIUM™ XC6 compact battery pack features superior pack construction, electronics and performance to deliver more work per charge and more work over the life of the pack than any battery on the market. With Milwaukee® durability built into each pack, this battery runs cooler and performs in climates below 0 ˚F/-18 ˚C. Managed by Milwaukee® exclusive REDLINK™ intelligence, the battery features overload protection to prevent you from damaging your cordless power tools in heavy duty situations, while the discharge protection prevents cell damage. The temperature management system and individual cell monitoring help maximize battery life. Upgrade to the M12™ REDLITHIUM™ XC6 Extended Capacity Battery Pack to instantly increase the runtime and durability of your Milwaukee® M12™ cordless tools. Milwaukee® Battery Pack, 12 VDC Lithium-Ion Battery, 6 Ah Battery, For Use With: 12 VDC Cordless Tool