Battery life may vary depending upon factors included but not limited to charging conditions, battery maintenance, storage & environmental conditions. Fits: Black & Decker EPL18, EPL186, EPL188, ASL186, ASL188, GLC1825L, GLC650L, GPC1820L, GKC1820L, GTC1820L & GTC1843L, Holds a charge up to 500 days between use., Amp hour: 1.5 AH, 25% lighter than Ni Cd.34% smaller than Ni Cd.