Slide the opening pick up the side of the battery to break apart remaining adhesive.

Lift the battery out of the case.

Do not reuse the battery after it has been removed, as doing so is a potential safety hazard. Replace it with a new battery.

If you used isopropyl alcohol, wait ten minutes before installing the new battery to allow the alcohol to completely evaporate.

To install a new battery and adhesive, follow this guide.