YAGadget iPhone 4S Replacement Battery + 7 Piece Complete Tool Kit + 5 Star Torx Screwdriver
This listing is for a replacement battery. If your battery does not charge or does not hold a charge properly, you can replace it with this one and it should solve all of the issues. It comes with a complete 7 Piece tool kit and a pentalobe 5 star screwdriver for fast and easy installation.