Delivers up to 3X more runtime, 20% more power and 2X more life than standard lithium-ion batteries.  The M12™ REDLITHIUM™ 3.0 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. 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.  Upgrade to the M12™ REDLITHIUM™ 3.0 Compact Battery Pack to instantly increase the runtime and durability of your Milwaukee M12 cordless tools.