# Expansion Board 2.0

![](https://3086745545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIL0iGdl11z7Jos_jpX%2F-LKN7scqKKkb6TqB3uYO%2F-LKN86jsexYs_HO7ct7C%2Fexpansion2.png?generation=1534782121584369\&alt=media)

## Pinout

The pinout of the Expansion Board is available as a PDF File

{% file src="<https://3086745545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIL0iGdl11z7Jos_jpX%2F-LKN7scqKKkb6TqB3uYO%2F-LKN86jxjkukrnpla-uN%2Fexpansion2-pinout.pdf?generation=1534782122192309&alt=media>" %}
Expansion Board 2 Pinout
{% endfile %}

![](https://3086745545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIL0iGdl11z7Jos_jpX%2F-LdFc9HSbtu2jNbqdzD4%2F-LKN86k1yodcQPCXUTNi%2Fexpansion2-pinout%20\(1\).png?generation=1556130895054108\&alt=media)

{% hint style="danger" %}
Be gentle when plugging/unplugging from the USB connector. Whilst the USB connector is soldered and is relatively strong, if it breaks off it can be very difficult to fix.
{% endhint %}

## Battery Charger

The Expansion Board features a single cell Li-Ion/Li-Po charger. When the board is being powered via the micro USB connector, the Expansion Board will charge the battery (if connected). When the `CHG` jumper is present the battery will be charged at `450mA`. If this value is too high for your application, removing the jumper lowers the charge current to `100mA`.

## Specsheets

The specsheet of the Expansion Board is available as a PDF File.

{% file src="<https://3086745545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LIL0iGdl11z7Jos_jpX%2F-LKN7scqKKkb6TqB3uYO%2F-LKN86k54GX4GjVGPQR7%2Fexpansion2-specsheet.pdf?generation=1534782119682439&alt=media>" %}
Expansion Board 2 Datasheet
{% endfile %}