Don't pry against the battery with the spudger, as you risk damaging it.

Insert the flat end of a spudger between the battery and the bottom speaker.

Twist the spudger to separate the adhesive securing the bottom speaker.

Remove the bottom speaker.

During reassembly, if your adhesive is still intact and sticky, you can reuse it. Otherwise, follow this guide to replace the adhesive.

If you don't have custom cut adhesive strips, use double-sided tape, like Tesa Tape, to secure the speaker to the frame.