Power Shield
**Note: If ordering internationally, this item can only ship via Fedex. The Power Shield is the best way to—you guessed it—provide power to your mobile Particle projects. Based around the MCP73871 battery management controller, this shield allows you to simultaneously power a Photon and charge a connected Li-Ion or Li-Po battery. You'll also be able to monitor battery levels using the Photon itself, which makes the Power Shield the best way to untether your wireless project. Besides the on-board USB port, you can also use an external DC power supply or solar-cell to charge the battery. This shield ships with a 3.7V, 400mAh Li-Po battery and headers. Designed for use with the Photon, backwards compatible with the Core. Specs: Operating voltage: USB or External DC of 7 to 20V Current consumption: 500mA max (USB) & 1.2A max (other DC sources) Dimensions: 1" x 1.84"