AT&T 5635 - Manual (Page 19)

If the batteries don’t charge properly
The batteries can be recharged many, many times, but if you get a low battery signal even after 10 hours of
charging, the battery pack should be replaced.
!
CAUTION: To avoid thee risk of fire and damage to the telephone set, use only AT&T Replacement
Battery 4051.
To purchase replacement batteries, call the National Service Center at 1 800 222-3111.
Replacing the Handset Battery Pack
1. Remove the battery case cover by pressing on the arrow lines and sliding the cover downward.
2. Lift out the old battery pack and unplug it from the handset. Discard the old battery pack, but not in
a trash compactor or a fire.
IMPORTANT: The rechargeable battery pack contains nickel and cadmium. Do not burn or
puncture the battery. Like other batteries of this type, if it is burned or punctured, it could release
toxic material which could cause injury. Do not dispose of it in household garbage. For information
about recycling or proper disposal, consult your local solid waste (garbage) collection or disposal
organization.
3. Hold the new battery pack and plug the cord into the handset. Place the battery pack in the case so
the cords rest on top of the battery pack.
4. Replace the battery case cover by sliding it on its track up over the battery case until it snaps firmly
into place.
5. The new batteries must be charged before using your telephone. Place the handset in the base unit
and allow it to charge for 10 hours. Your telephone will operate before that, but for best performance,
let the batteries charge fully.
Replacing the Base Batteries
These batteries are used to retain answering system memory in case of power failure.
When these batteries need to be replaced, the LO BATT BASE Light on the base will blink.
NOTE: To avoid losing your answering machine memory, you should leave the system connected to
AC power while changing the base batteries.