Try your best not to deform the battery during this process. Soft-shell lithium-ion batteries can leak dangerous chemicals, catch fire, or even explode if damaged. Do not use excessive force or pry at the battery with metal tools.

Insert a plastic card underneath the left edge of the battery.

Carefully slide it underneath the battery to loosen the adhesive.

Continue sliding the plastic card underneath to pry up the battery from its recess.

The battery should come off easily. In case the battery is still sticky, repeat the previous adhesive remover procedure.