Lift the battery cover off from the Battery Compartment Release slot on the bottom of the handset.
Remove the battery by lifting from the slot on the bottom of the battery.
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 on the battery meet with the gold contacts in the battery compartment and then press the bottom of the battery into place.
Reattach the battery cover.