Delivers up to 2X more runtime, 20% more power and 2X more recharges than standard Lithium-Ion batteries. The M12 REDLITHIUM™ 2 compact battery pack features great pack construction, electronics and performance to deliver more work per charge and more work over pack life than any battery on the market. It offers 2 Ah of runtime. With Milwaukee® durability built into each pack, this battery runs cooler and performs in climates below 0 deg F/-18 deg C. Its compact design fits in tight work spaces and reduces user fatigue. 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. Switch to the REDLITHIUM™ 2 compact battery pack to instantly upgrade the runtime and durability of your Milwaukee® M12 cordless tools.