AdafruitPro Trinket LiIon/LiPoly Backpack Add-On [ADA2124]

Note this comes with board and pins only, no battery as shown in picture.

Wouldn't charge my larger LiPo but I had forgotten to short the other side to allow over 100MaH batteries and had already soldered it down. LiPo also didn't seem to deliver enough current.

Lady Ada always delivers and this product is no exception. My Nephew runs Cross Country for his High School's team and they practice in a heavily wooded area, so I fashioned him a GPS transponder and pedometer/timer using this and another Adafruit Logic controller and both perform very well in field conditions. I've never had a bad Adafruit product.

I used this board with a teensy 3.2, 18650 Li-ion, and a hundred or so speedy dotstar leds and honestly power was the easiest part of the project. The circuit with battery are embedded with only a micro-usb extension exposed and i haven't had any trouble recharging the battery or powering the pretty lights.

Works as described !