Avaya 3641 Administration Manual page 77


After a length of time battery packs will lose the ability to maintain a charge and to
perform at maximum capacity and will need to be replaced. This behavior is normal
for all batteries.

You must charge the battery overnight while the handset is turned off.

If the handset does not charge, clean battery pack, charger and handset contacts
with an alcohol swab.

When the handset is properly seated, the backlight comes on briefly to indicate
charging has begun.

Any battery which exhibits swelling, cracking or other abnormality should be
disposed of promptly and properly.
Avaya 3641/3645/6120/6140 IP Wireless Handset SIP Administration Guide
Using the Avaya 3641/3645 IP Wireless Handset
June 2012 77