If you need some help, call us on 0800 145 6789* or go to bt.com/producthelp 
87 General information 
Important 
This equipment is not designed for making emergency 
phone calls when the power fails. Alternative 
arrangements should be made for access to  
emergency services. 
This product is intended for connection to analogue 
public switched telephone networks and private 
switchboards in the United Kingdom. 
Replacing the handset batteries 
After a time, you might find that the handset batteries 
run out of charge more quickly. This is a standard sign 
of wear and the batteries will need replacing. 
1. Open the battery compartment cover. 
2. Lift the battery out and remove the batteries. 
Replace with two new AAA Ni-MH 750mAh 
rechargeable batteries. 
3. Replace the battery compartment cover.
Caution
Don’t immerse batteries in water, throw them into a fire 
or dispose of them with ordinary domestic refuse.  
BT accepts no responsibility for damage caused to your 
BT6610 by using any other types of batteries.  
There is a risk of explosion if incorrect batteries are fitted. 
Safety information 
•  Only use the power supply suitable for the BT6610. 
Using an unauthorised power supply will invalidate 
your guarantee and may damage the phone. The item
  code for the base mains power supply is 066270 . 
If you’ve bought a multiple pack, the item code for the 
charger mains power supply is 066270. 
•  Use only the approved rechargeable batteries supplied. 
Spare rechargeable batteries are available from the 
BT6610 Helpline on 0800 145 6789*. 
•  Don’t open the handset (except to replace the 
handset batteries) or the base. This could expose you 
to high voltages or other risks. Contact the Helpline 
on 0800 145 6789* for all repairs. 
•  If the keypad is locked, it is still possible to make calls 
to 999 and 112 emergency numbers by dialling the 
number then pressing 
.
•  Radio signal transmitted between the handset and 
base may cause interference to hearing aids. 
•  It is recommended that advice from a qualified 
expert be sought before using this product in 
the vicinity of emergency/intensive care medical 
equipment. 
•  It is recommended that if you have a pacemaker 
fitted you check with a medical expert before using 
this product. 
•  Your product may interfere with other electrical 
equipment, e.g. TV and radio sets, clock/alarms and 
computers if placed too close. 
•  It is recommended that you place your product 
at least one metre away from such appliances to 
minimise any risk of interference.
•  Never dispose of batteries in a fire. There is a serious 
risk of explosion and/or the release of highly toxic 
chemicals.