Motorola Moto Z4
Original battery will only last 15 minutes on a full charge
The repair was very simple, easy to follow directions, new battery makes the phone like brand new.
The last phone battery I replaced I bought the iFixit tool kit and the work mat, both were extremely helpful. I had everything to get the job done and a place to work on it. I have an industrial hot air tool, I used an extreme moderation to make sure I didn't damage any components, especially the lithium batteries.