MediaRange MR747 Bedienungsanleitung Seite 6

Briefly press the power button and the current charge level of the
Powerbank is indicated by LEDs.
The number of LEDs that are illuminated indicates the following
charge levels:
Four illuminated LEDs: Charged between 76-100%
Three illuminated LEDs: Charged between 51-75%
Two illuminated LEDs: Charged between 26-51%
One illuminated LED: Charged between 1-25%
No illuminated LEDs: Powerbank is empty.
Start charging:
To charge your device, connect it to the USB-A port on the
Powerbank using the cable included (or a device-specific charging
cable). The powerbank will start charging your device immediately.
This model has the USB outputs with 2x 1.0 A and 1x 3.1A current.
To charge your smartphone, you can use the 1.0 A output. For
charging larger devices, like tablet computers, please use the 3.1 A
output. The maximum current is limited to 3.1 A.
You are able to charge up to three devices simultaneously as long
as the required current of all connected devices is not higher than
output of 3.1 A.
Stop charging | Switching off the Powerbank
To stop charging, press and hold the power button on the
Powerbank for 5 seconds and the powerbank will switch off.
Remove the charging cable.
If all devices are unplugged, the Powerbank switches off
automatically.
If the device to be charged is fully charged, the Powerbank switches
off automatically.