Milwaukee® Cordless Battery Pack, Rechargeable, Series: M18™, Li-Ion Battery, 4 Ah Battery, 18 VDC Charge, 90 min Charging, For Use With: Milwaukee® M18™ Cordless Power Tools
Delivers up to 2X more runtime, 20 deg F/-18 deg 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. Switch to the REDLITHIUM™ XC4.0 Extended Battery Pack to instantly upgrade the runtime and durability of your Milwaukee® M18 cordless tools.