Mfr: Artisan Power Series: - Package: Retail Package Product Status: Active Battery Chemistry: Nickel Metal Hydride Rechargeability: Yes Battery Cell Size: - Number of Cells: 3 Voltage - Rated: 3.6 V Capacity: 550mAh Size / Dimension: 1.77\ L x 2.17\ W x 0.51\ H (45.0mm x 55.0mm x 13.0mm)