Gently lift the battery out of the chassis.

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

To install a new battery.

Peel and remove the old adhesive from the chassis.

Clean any adhesive residue with highly-concentrated isopropyl alcohol (over 90%) and a microfiber or lint-free cloth.

Place your replacement adhesive strips onto the chassis where the old adhesive was located and remove the liner from the battery connector.

Orient the new battery using the alignment posts and press it firmly into place.