Grip and pull the white battery connector directly out of its socket.

Use an opening tool to gently pry the battery up and off of the housing.

Take care not to bend, twist, or puncture the battery.

Remove the battery.

During reassembly:

When installing a new battery, make sure the end with cables is near the bottom of the ear cup so the connector can reach its socket.

If your replacement battery comes with adhesive pre-installed, remove the plastic liner and press the battery into place.

If your replacement battery doesn't come with adhesive pre-installed, use strips of double-sided tape to secure it in the recess.