# III.	Charge the battery

1. In order to charge the instrument, just use any mini-USB cable that you could connect to any power supply (computer, phone charger, cigarette lighter..). A red light on the battery icon indicates the flight computer is charging. A full charge from an empty battery takes up to 8 hours. It is NOT recommended to charge through a USB hub device.

<figure><img src="/files/uuMywafTi9PBl83GNtYH" alt=""><figcaption></figcaption></figure>

2. If the instrument is connected to a computer a screen symbolizes it. You can disconnect it at any time.
3. In running mod, draw a “slide-down” movement on the screen with your finger in order to display the top banner during a few seconds.

<figure><img src="/files/C28dcPy8FEb84usgf4no" alt=""><figcaption></figcaption></figure>

4. Disconnect the instrument to stop charging it. The Li-ion battery isn’t affected by a memory effect.


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