The USB-C Micro-Lipo charger is special. We've exposed the data lines so you can use it both as a USB-C breakout and a Micro-Lipo charger. Since there's a little more to it, we've included the pinouts here. Let's take a look!

The data pins are not exposed on the micro-B charger, only the USB-C version!

Connectors

Using this board as a Micro-Lipo charger is simple with the two connectors available:

• USB-C connector - Shown above on the left, 5V input via a USB Type C connector
• JST connector - Shown above on the right, this two-pin JST connector is for plugging in single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)

LEDs

There are two LEDs on the board.

• CHG - The charge LED is red while the battery is charging
• DONE - The done LED is green once the battery is fully charged.

If both LEDs are on at the same time, it means the battery is damaged or isn't plugged in.

Pins

There are optional pins available to use this board as a USB-C breakout:

• 5V - power pin
• D+/D- - data pins
• GND - ground pin
• BAT - VBAT pin

You can solder header pins (not provided) to the board to use it with a breadboard and your favorite microcontroller.