About the product: High Quality Rechargeable Batteries - Especially fit for any solar light or appliance that uses 1.2V AA/AAA Battery - Can be recharged up to 1,000 times - The mAh refers to how much capacity a single battery can hold (the bigger the number the better as long as the devices uses 1.2 voltage) Ni-Cd AA Rechargeable battery Imforation: 1.2-volt 300mAh / 600mAh / 800mAh AA Ni-Cd rechargeable batteriesVoltage:1.2V Power life up to 24 monthsDimension: 14.2 Dia x 50 H mm Rapidly charging and reliable service life Ideal for fast discharge applications / solar lights Ni-Cd AAA Rechargeable battery Imforation: 1.2-volt 600mAh / 800mAh AAA Ni-Cd rechargeable batteriesVoltage:1.2V Power life up to 24 monthsDimension: 10 Dia x 44 H mm Rapidly charging and reliable service lifeIdeal for fast discharge applications / solar lights Ni-MH AA Rechargeable battery Imforation: 1.2-volt 600mAh AA Ni-MH rechargeable batteriesEnvironmentally friendlyVoltage:1.2V Power life up to 24 monthsDimension: 14.2 Dia x 50 H mm Rapidly charging and reliable service life Ideal for fast discharge applications / solar lights Ni-MH AAA Rechargeable battery Imforation: 1.2-volt 600mAh AAA Ni-MH rechargeable batteriesEnvironmentally friendlyVoltage:1.2V Power life up to 24 monthsDimension: 10 Dia x 44 H mm Rapidly charging and reliable service lifeIdeal for fast discharge applications / solar lights