Powerextra Upgraded 2 Pack 3500mAh 18Volt HPB18 Replacement Battery Compatible with Black and Decker HPB18 HPB18-OPE 244760-00 A1718 FS18FL FSB18 Firestorm Black and Decker 18 Volt Battery 3500mAh Capacity of this Black & Decker 18 Volt Replacement Battery,brand new, made with high quality battery cells. Professional Replacement Battery Compatible with Black & Decker HPB18 HPB18-OPE 244760-00 A1718 Fully compatible with Black & Decker NHT518, NPP2018, NPT3118, NS118,etc Battery Storage - If you don't plan on using the Power Tool Battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-ion batteries will self-discharge during storage; remember to recharge the batteries before use. Package include:2*3.5Ah NI-MH Black&decker 18V Batteries,1*pair of gloves,1*voltage test pen(not include batteries)