HQRP 18V Battery for DEWALT DC500 DC500K&nbsp;DC515 DC515B DC515K DC515P DC515N Vacuum + Coaster HQRP&reg; Replacement Battery plus HQRP&reg; Coaster; Battery Voltage: 18V; Capacity: 1.8Ah; Ni-Cd; Compatible with Original Battery; 200 Days warranty!