Product details:

Compatible with all Milwaukee M18 cordless tools, the M18 REDLITHIUM XC extended-capacity battery delivers 4 Ah (72 watt-hour) of run time-even in sub-zero temperatures. Each 18 volt lithium-ion battery is laden with new-age REDLINK circuitry engineered to prevent overloads and protect against cell-damaging discharge. Revolutionary cell monitoring and temperature regulation prolong this battery's operation and life expectancy, meaning fewer work interruptions and more recharges than ever. Professionals depend on heavy-duty, long-lasting performance and Milwaukee delivers with this 18 volt battery pack. UPS, Fedex) so you get them fast and in good condition. An adult signature may be required. Please be sure to have available help on hand to assist you with moving the item to the desired location in or outside of your home. The item and packaging should be in original condition. Please be sure to read the item description thoroughly before making a purchasing decision. Please be aware that slight variations in color may be due to differences in lighting and computer monitor resolutions.