User guide

12
Charging the Battery OpenPhone 26/27
Charging and Discharging
The battery can be charged and dis-
charged hundreds of times, but it
will eventually be used up. When the
operating time (i. e. talk and
stand-by time) has become noticea-
bly shorter than normal, the battery
should be replaced.
In order to achieve long operating
times, you should discharge the bat-
tery at intervals by not placing the
handset in the charging station and
leaving it switched on until it
switches itself off. Only use this
method to discharge the battery.
Extreme fluctuations in tempera-
ture have an effect on the charging
capacity of the battery.
Charging the Battery
Commissioning
Charge the batteries for approx. five
to six hours before using your hand-
set for the first time. This safety
measure extends the lifetime of your
batteries. The maximum perform-
ance of the batteries is only reached
after three to five charging/dis-
charging cycles.
Place the handset in the charging
station regularly in order to reach
the optimum battery charge.
Be careful to observe the correct po-
larity when replacing the batteries.
It is absolutely essential that you
only use rechargeable batteries au-
thorised by the manufacturer. The
manufacturer does not accept any
responsibility for malfunction or
damage when other types of
rechargeable battery or normal bat-
teries are used.
Charging and Operating
Times
Charging time
5 - 6 hours (for fully discharged
batteries)
Talk time
OpenPhone 26: up to 20 hours (fully
charged)
OpenPhone 27: up to 14 hours (fully
charged)
Stand-by time
OpenPhone 26: up to 200 hours
(fully charged)