Regardless, I am then encountered the iFixit video, there is a battery change is demonstrated exemplary. Then I immediately looked around on Amazon and bought this set here.
The battery I'm happy, it works perfectly in Iphone 5. It is a 613er battery. Original a 610er was built, but no problem. With the new battery in the phone, I have the same time installed the update to iOS 8.1. It worked without problems. So far, I'm excited about the new battery. With the old battery to the phone has been switched off at 30%, sometimes even at just below 50%. But the battery was not empty, a little later I could telephone yes on again. These problems are now no longer exists.
For tool:
It absolutely does the job, I could change the battery. That was my first battery change with an Iphone and I had respect, I wanted to scrap the phone not so. With the included tool it worked without problems.