Do not grab the battery at the ends because this battery is flexible. Instead, grab the battery one inch from each end to better support the middle.

Use two hands to grip the battery about one inch from each end.

Lift the front of the battery (the side closest to you) until the battery is free of its alignment pegs.

Pull the battery towards you to release it from its connector.

Don't continue to use a damaged battery, as doing so is a potential safety hazard. If in doubt, replace it with a new battery.

During reassembly, insert the battery onto its connector at a slight downward angle before pressing it flat to the frame.