Duracell digital camera and camcorder batteries are built to the highest possible standards, as you would expect from such a trusted brand and have a 1 year limited warranty. Each battery is guaranteed 'no memory effect'. Duracell's products are designed to give you maximum power. Whatever your power needs, it will last longer with Duracell. Specification Function: Camera battery Battery Chemistry: Lithium ion Voltage: 3.7 V Capacity: 1020 mAh Output Power: 3 Wh Weight: 23g Dimensions: 42mm x 34mm x 9mm