BT 2100 User Manual page 11

Fully discharging the batteries at least once
a week will help them to last as long as
possible. However, the charge capacity of
rechargeable batteries will reduce with time
as they wear out, so reducing the talk/standby
time of the handset. Eventually they will
need to be replaced.
Under ideal conditions, the handset battery
should give about 10 hours talktime or 100
hours standby on a single charge. Optimum
time for talk and standby are only achieved
when the handset batteries are new and
fully charged.
5
Ensure that each end of the line cord
is fitted into the correct socket.
12