Kathrein MSK 24 - Manual (Page 17)

Starting up
17
Mains and battery operation
The MSK 24 can be powered from the mains or the built-in battery.
Mains operation
Use only the batttery charger/power supply unit supplied for mains
operation. Connect the power supply unit to the voltage supply socket on
the right side of the receiver.
If the receiver is not used for long periods, connect the receiver to the
mains supply now and then (maintenance charging).
Make sure that the power supply unit is not connected to the receiver if it
is not to be used to supply voltage as otherwise the battery will be
discharged.
Battery operation
Battery operation is only possible if the battery is sufficiently charged.
Otherwise the MSK 24 cannot be switched on.
If the battery has been fully discharged, recharge it immediately as
otherwise it may be damaged or destroyed.
Charging begins automatically as soon as the receiver has been
connected to the mains supply. A protective circuit prevents the battery
from being overcharged.
The capacity of the battery is displayed for approx. 3 seconds after the
receiver has been switched on.
With a charged battery the maximum period of operation is approx.
2.5 hours for an LNB supply current of 150 mA.