Leave the opening pick in place and apply a few more drops of adhesive remover or isopropyl alcohol inside the battery well.

Don't apply more than a few drops at a time, or the liquid may seep under the screen.

Tilt the top edge of the device upward and wait 1-2 minutes for the adhesive remover to weaken the adhesive.

Continue working the opening pick along the top edge of the battery, slicing more of the adhesive underneath.