1430mAh 616-0579, 616-0580, 616-0581 Battery Replacement for Apple iPhone 4S A1387, A1431 with Installation Tool Kit Replacement for the Following Battery Model/Part Numbers: 616-0579, 616-0580, 616-0581. 3.7V 1430mAh 5.3Wh Li-ion Polymer Rechargeable Battery Pack. Includes 7 Piece Installation Tool Kit (as pictured). 1 Year Replacement Warranty. MPF Products is a Registered Trademark. Compatible with the following iPhone 4S models: iPhone 4S A1387, iPhone 4S A1431.