Description
Is your QT Py all alone, lacking a friend to travel the wide world with? This LiIon or LiPoly Charger BFF Add-On is designed to fit onto the back of any QT Py board to provide portable power support. Simply plug any standard 3.7V/4.2V lithium polymer or lithium-ion rechargeable battery into the JST plug on the end. When powered by the USB port on the QT Py, the charger will charge the battery at a 200mA max rate, indicated by a yellow LED.
When USB power is removed, the battery will reverse charge into the 5V port via a Schottky diode. A built-in slide switch allows you to turn the power on or off. A voltage divider connected to pin A2 provides a way for your firmware to detect charging or battery power states.
This product comes as an assembled and tested PCB and is designed specifically for Adafruit LiPoly/LiIon batteries only. Batteries and QT Py are not included.
- Fits on the back of any QT Py board
- Charges single 3.7/4.2V Lithium Ion or Lithium Polymer batteries
- Charges at 200mA max current
- Yellow LED charge indicator
- Power on/off slide switch
- Detect battery and USB power states via voltage divider on pin A2
- Compatible with USB Type-C power on QT Py
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