Use the flat end of a spudger to gently pry the battery out of the case.

The adhesive can be stubborn. If the battery does not come out initially, apply heat to soften the adhesive.

If the shield over the motherboard comes off with the battery, use an opening pick to separate the battery and the shield, then snap the shield back onto the motherboard.

Do not pull the battery all the way out after you separate it from the shield. There is a fragile battery cable that must be disconnected before the battery is completely removed.