Use scissors to cut one of your opening picks to about the width of the battery. Try not to leave any sharp corners.

Insert the modified pick between the right side of the battery and the case.

Use constant, steady pressure to slowly pry the battery up, separating it from the adhesive securing it to the system board.

Be careful not to deform or puncture the battery.

On the larger (42 mm) models, it's possible to accidentally pry at the system board underneath the battery. Insert the pick only far enough to get underneath the battery, not the system board.

If needed, apply a little high concentration isopropyl alcohol (90% or greater) around and under the battery to help weaken the adhesive.

Do not attempt to remove the battery as it is still connected.