Battery type: Li-polymer Capacity: 800 mAh Voltage: 3.7 V Energy: 2.96 Wh Number of cells: 1 Weight: 20 g Compatible with the following device models: Sony Portable Reader PRS-600/RC Sony Portable Reader PRS-600/BC Sony Portable Reader PRS-600 To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Sony A98927554931 Sony A98941654402 .