Charging The Battery; Transferring Pictures And Videos; Wifi Function And App Connection; Maintenance - Liemke CHALLENGER-15 Manual De Instrucciones

18. CHARGING THE BATTERY

The device is equipped with an internal, rechargeable battery that
is charged via the USB-C interface on the underside of the hous-
ing. The battery indicator in the upper right corner of the screen
shows the charge level of the battery.
> Please charge the battery at the latest when a low battery
charge (red battery symbol) is displayed.
You can charge the battery with the supplied power supply unit
or a portable power supply unit such as a USB powerbank. A pow-
erbank with 4000 mAh capacity can double the operating time.
The LED indicator next to the USB-C interface lights up red during
charging and changes to green when the battery is fully charged.
The unit can be charged during operation. It charges faster than is
needed for ongoing operation.
19. TRANSFERRING PICTURES AND
VIDEOS
Once you have connected the unit to your computer via a USB
cable and switched on the unit, it acts as a mass storage device
so that you can view, copy or delete your pictures and videos on
the computer.
20. WIFI FUNCTION AND
APP CONNECTION
The app and information on the app connection can be found at:
https://liemke.shop/medien

21. MAINTENANCE

> Activate the WiFi function in the menu.
Maintenance should be carried out at least twice a year and
consist of the following actions.
> Wipe the external surfaces of metal and plastic parts free of
dust and dirt with a cotton cloth. Silicone grease can be used
for this purpose.
> Clean the contacts of the unit with a non-greasy organic
solvent.
> Check the glass surfaces of the eyepiece and the lens. If neces-
sary, remove dust and sand from the lenses (preferably using a
non-contact method). Cleaning of the external surfaces of the
optic should be done with substances designed especially for
this purpose.