The old battery was not charging.
It went perfectly.
No it was very simple.
All iPhone 5s phones have two proprietary 5-point pentalobe screws near the lightning connector to keep anyone other than an Apple technician from opening the phone. These replacement screws come as a set of two.
You can replace these difficult to work with pentalobe screws with our Phillips screws to make it easy to open your phone the next time you need to make a repair.
I posted a previous story about how I replaced my wife's 5s battery, but I believed I broke the home button ribbon cable in the process of getting the front display popped off with the suction cup.
The repair when great. Granted, my wife was a little disappointed about losing the Touch ID capability, . . .