Apple  iPhone 4G, iPhone 4G 16GB, iPhone 4G 32GB,  battery replacement For the Apple iphone Replaces Mobile phone batteries 616-0520, 616-0521, GB-S10-423482-0100 FITS Following Appple iphones Apple  iPhone 4G, iPhone 4G 16GB, iPhone 4G 32GB This 3.7v battery is designed for the Apple iphone with a capacity of 1420mAh , it is manufactured by our ISO 9001 certified supplier to a very high standard. As we supply a very large range of batteries we cannot always have stocks of the slower moving lines as batteries have a shelf life and we insist on quality control for our customers, which may mean slightly delayed shipment date, where this is necessary you will be advised by email. Battery Type: Li-ion Polymer Battery Voltage: 3.7V Battery Capacity: 1420