Try not to deform or puncture the battery during the following removal process. Soft-shell lithium-ion batteries can leak dangerous chemicals, catch fire, or even explode if damaged.

Insert the flat end of a spudger between the battery and the battery well.

Carefully pry the battery out of its recess.

You might want to change the position of the spudger a couple of times during this process to avoid excessive force to a single point of the battery.