# Charging External USB Devices (see figure B)

You can use the USB ports on the battery adapter (1) to increase the battery runtime of various battery-operated USB devices, such as mobile phones, MP3 players or tablets.

- Ensure that your external USB device can be charged using the USB port on the battery adapter. Refer to the specifications related to this topic in "Technical Data".

- Insert the battery (4) into the battery adapter (1).

- Connect the charging cable of your USB device to the USB port (3) on the battery adapter (1).

When the battery of your USB device is fully charged, the USB adapter will terminate the charging process. When charging is required again, the USB adapter will continue charging.

In order to protect the battery of your USB device, we recommend that you disconnect the USB device from the USB adapter when the charging process is complete.