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2. Rechargeable batteries are already fitted in your
handset. To activate the batteries, pull the plastic
tab away from the bottom of the handset as shown
previously.
3. Place the handset on the charger and charge for at least
24 hours. The red charging light will come on.
Your BT Synergy 4100 additional handset comes pre-
registered to the base. The handset number will be
shown on the display.
Your BT Synergy 4100 is ready for use.
9Getting started
Battery performance
To keep your batteries in the best
condition, leave the handset off
the base for a few hours at a time.
Running the batteries right down
at least once a week will help them
last as long as possible.
The charge capacity of
rechargeable batteries will reduce
with time as they wear out, giving
the handset less talk/standby time.
Eventually they will need to be
replaced. New batteries are
available from the BT Synergy
4100 Helpline on 0870 605 8047.
For instructions on how to install
new batteries, see page 75.
After charging your handset for the
first time, subsequent charging
time is about 6–8 hours a day.
Batteries and handset may become
warm during charging. This is
normal.
Synergy 4100 – Issue 5 – Edition 1 – 18.01.07 – 7993
If you experience any problems, please call the Helpline on 0870 605 8047 or email bt.helpdesk@suncorptech.com
Power adaptor cable