Before you choose the battery size, please check your original battery model carefully. 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) 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)