MP3 Battery for iPod-4 Specification: Voltage: 3.7V Capacity: 750 mAh Chemistry: Li-ion MP3 Battery for iPod-4 Specification:Voltage: 3.7VCapacity: 750 mAhChemistry: Li-ionWarranty: 1 yearApplicability: For APPLE iPod-4About usEstablished in 2000, with professional staff and powerful R&D ability, Shenzhen SHX Electronics Co., Ltd. has successfully built a complete system integrating R&D, ...