Specifications: Size: 2/3 AAA Capacity: 300 mAh Chemistry: Nickel Metal Hydride (NiMH) Voltage: 1.2V Included Features: No memory effect Reliable service life Long-Lasting Performance Recharges up to 1000 Cycles Ideal for the following applications: Solar Light Dimensions: Length: 29 mm (1.2") Diameter: 10 mm (0.40")