Black & Decker VP100 VersaPak 3.6-Volt 1.2-Amp Hour NiCad Stick Style Battery Compatible with each and every Black and Decker VersaPak tool 3.6-volt, 1.2 amp battery supplies longlasting power Zero memory technology means no draining necessary before recharging Dimensions: 7.5 x 4.2 x 1.1 inches (WxHxD); weighs 5.1 ounces Includes a 2-year warranty