Milwaukee M18 Xc 4.0 Battery, With Worklight Kit 4-amp hour 72-watt hour battery Lithium-ion battery delivers long life and run time with fade-free power Fuel gauge onboard: displays remaining runtime for less downtime on the job Milwaukee red link intelligence overload protection prevents user from damaging their cordless power tool investment in abusive situations Milwaukee REDLINK intelligence individual cell monitoring ensures optimal charge and discharge for maximum life Best in class construction: integrated weld frame, cell separator, impact and vibration protective rubber Versatility: powers more than 40 Milwaukee M18 cordless power tools All-weather performance: delivers fade-free power in extreme jobsite conditions 3 year warranty Compatible chargers: M18, M12 multi-voltage (48-59-1812), M18 AC/DC (2710-20) Includes: (1) 48-11-1840 M18 REDLITHIUM XC 4.0 extended capacity battery pack, and (1) 2735-20 M18 cordless LED work light This product is manufactured in China.