The battery had close to 75% wear, couldn't hold enough charge to last the day.
Repair was mostly smooth
To save time, I didn't remove the screen, but worked carefully with the phone ribber banded to the case. One of the adhesive broke, I used a flexible card (health care card) to slip under the battery and continued working by pushing against the adhesive. When the battery seem to start budging, I switched to a credit card and slowly wedge the battery out. This process took the most time, the rest, was easy.