The battery is of high quality, the tools... not so much. But if you follow the videos that are out there on youtube, you should be able to get this done. **MAKE SURE YOU DO NOT SEPARATE THE PHONE AT THE CHROME RING!!!** When the screws are removed, the screen actually lifts out (it takes a bit of force due to a rubber o-ring), but the glass is what you remove. If you separate the phone at the chrome you will break it... as I did.. That being said, once I repaired the board, the battery is holding fine. It is actually holding a charge longer that the original.