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: 12.0V Battery Type: Ni-MH Capacity: 300mAh Dimension: 86.97 x 28.50 x 21.13mm Compatible Part nos: DC-26, MH700AAA10YC, 650-053 Compatible Models: Sportdog Prohunter SD-2400, ST100-P, SWR-1