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4 Charging and battery operation
Charging:
z
Place the device (
switched off
) into the docking station.
The time required for complete charging is displayed.
Once the rechargeable batteries have been fully charged, the
device automatically switches to charge maintenance mode.
It can remain in the docking station until the next time it is used.
After at least 12 hours of
charging time (depending on the ca-
pacity of the rechargeable battery), the device has an available
operating time of at least 8 hours.
Note:
If the device is switched off and stored out-
side the docking station, the nickel metal hy-
dride rechargeable battery will begin to self-
discharge. The rechargeable batteries will
lose their charge after 30 days at the latest.
To preserve the capacity of the rechargeable batter
-
ies, discharge the device completely and recharge it
again fully on a regular basis (e.g. once a month).
Discharging:
z
Place the device (
switched on
) into the docking station.
z
The rechargeable batteries will be fully discharged. Once the
device has been discharged, it will automatically switch to
charging mode.
A full discharging and recharging cycle takes approximately
20 hours (8 hours discharging + 12 hours recharging). The
duration depends on the capacity of the accumulator used.
Note:
When you
switch from alkaline disposable batter-
ies to nickel metal hydride rechargeable batteries,
the operating hours indication on the display is in-
correct. Switch the device on and place it into the
docking station to allow it to discharge and recharge
automatically. The operating hours will then be dis
-
played correctly.
