High Quality, high capacity rechargeable battery. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection, with built-in battery life microchip. Volts: 4.8V Battery Type: Ni-MH Capacity: 150mAh Dimension: 31.30 x 21.56 x 11.04mm Compatible Part nos: DC-17, 4SN-1/4AAA15H-H-JP1, DC-17_5, MH120AAAL4GC, 650-058 Compatible Models: KINETIC MH120AAAL4GC, DOGTRA SD-400, SD-400S, SPORTDOG SD-800, DC-17. SMAVCO and the SMAVCO logo are trademarks of SMAVCO LLC.