The 18V compact LITHIUM-ION Battery pack offers increased run-time with 40% less weight than an 18V NiCad battery. Milwaukee's Digital Power Management helps to ensure that optimal battery life and run-time is achieved, while protecting the battery and tool during the toughest jobsite applications

• The M18 Lithium-Ion Battery has the equivalent run-time of an 18V NiCad with 40% less weight
• The Milwaukee™ digital power management system allows for temperature management, overload current control and cell voltage monitoring that extends pack life, prevents burn-up and optimizes run-time
• The battery fuel gauge displays the remaining run-time on the battery so you know when to change batteries or recharge them
• Has a 2-year 2,000 Charge Warranty

The M18 Battery Technology is a new design of the Lithium-Ion Battery and is not compatible with older Milwaukee tools

This battery works optimum on low current draw tools in the m18 range, such as the c18 series cordless drills,impact driver & torch