Synergy 4000 – Edition 3 – 15.05.06 – 7372
Charge the handset
1.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.
Getting started | 3 |
Talk/Standby time
In ideal conditions, fully charged handset batteries should give about 10 hours talk time or 100 hours standby time on a single charge. The base must remain plugged in to the mains and switched on at all times.
Remove this tab and charge batteries for 24 hours before use | Rechargeable batteries already fitted |
PULL
Note that new batteries do not reach full capacity until they have been in normal use for several days.
Battery low warning
2.Place the handset on the charger to charge for at least 24 hours. The red Charging light comes on (this will stay on even when the batteries are fully charged). When the handset is fully charged the display shows the 
symbol.
Registering your handset to either your BT Synergy 4100 or 4500 base
If you are registering the handset to another DECT GAP compatible base station that is not a BT Synergy 4100 or 4500, please refer to the user guide for that base for registration instructions.
Before registration, make sure the handset batteries are fully charged and that you are close to the main base station.
If the 
symbol flashes in the display and you hear a warning beep every
During charging, the 
symbol will scroll in the display.
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 4000 Helpline on 0870 605 8047.
If you experience any problems, please call the Helpline on 0870 605 8047 or email bt.helpdesk@suncorptech.com