Funkwerk FC4 Operating Manual page 21

FC4 / FC4 Ex (HS) connected with Mobility Server
Putting the FC4 into operation
As soon as the contact is provided and charging starts, the LED at the
bottom front of the charger lights up red. When the battery is fully charged,
the LED colour changes from red to green. The LED goes out after
removing the battery.
Information on battery use
After installing a battery, place the handset into the charger until the
GB
battery symbol lights up green. The battery is now fully charged.
You may as well leave the handset in the charger for a longer period. The
battery charging management changes over from normal charging to
charge retention as soon as the battery is fully charged and thus prevents
harmful overcharging.
When the handset is not to signal any calls while being placed in the
charger, you must activate the "Silent charging" function (Menu > Setup >
Phone settings > Phone behaviour > Silent charging).
Leave neither the handset nor the battery in the blazing sun. This will
extend the battery's service life.
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