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: 7.4V Battery Type: Li-ion Capacity: 2000mAh Dimension: 135.00 x 53.00 x 5.50mm Compatible Part nos: 81-207-392012, 81-215-360012, TPMC-8X-BTP Compatible Models: Crestron 6502269 WiFi TouchPanel