Get the most out of your lithium-ion battery with the M12 REDLITHIUM XC 6.0Ah and 3.0Ah Battery Pack. The superior pack construction, electronics and performance delivers 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, get up to 3X more runtime, 20% more power and 2X more life than standard lithium-ion batteries. Plus, this battery runs cooler and performs in climates below 0F/-18C. Managed by Milwaukee's 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 XC 6.0Ah and 3.0Ah extended capacity battery pack to instantly increase the runtime and durability of your Milwaukee M12 cordless tools.