12-Volt Lithium-ion Replacement Battery For Milwaukee M12 Cordless Tool 48-11-2401 48-11-2420 48-11-2440 48-11-2411 48-11-2402 48-11-2412 12v,1500mAh Lithium Ion Battery for Milwaukee M12 48-11-2420,M12,2462-20,48-11-2401 Lithium-ion battery delivers longer life and run-time with fade-free power Ergonomic- compact and lightweight design for operator comfort High Current Discharge - Increased power and performance Built in high quality battery cells,No effect on the battery,Charging at any time.