Slide the Battery Compartment Lock to the right and slide the battery cover down to remove from the handset.
To remove the battery, hold the tab on the bottom edge of the battery and lift.
Clean any debris off the gold contacts on both the battery and the handset.
Note: To clean the contacts it is recommended to use a soft cloth.
To re-insert the battery, place the top of the battery in the compartment, ensuring the gold contacts align with the terminals at the top of the handset, and then press the bottom of the battery into place.
Replace the battery cover and slide the Battery Compartment Lock to the left.