Pull up on the suction cup to remove the battery.

The battery will come out without much force once the isopropyl alcohol has adequately penetrated the battery adhesive.

If there's any alcohol solution remaining in the phone, carefully wipe it off or allow it to air dry before installing your new battery.

During reassembly, remove the old adhesive and apply stretch release adhesive strips, double sided adhesive tape, or pre-cut adhesive to secure the new battery.

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