Powering/charging via ItsyBitsy 32U4 & Backpack with 18650


I'm a huge fan of Arduino's work.

I have a project which needs a battery that has the ability to supply a motor with enough power to push back and release a rather heavy spring.

I've chosen a single-cell INR 18650P and, in concert with the MD 10C R3 motor driver, it works well. I need it to be USB rechargeable and I'm working with the Adafruit ItsyBitsy and an M type RF receiver to activate the motor/motor driver via a remote switch. I've purchased their charging/battery Backpack too.

What do I need to do to be able to connect up my 18650 to the Backpack properly?

Appreciate all the great work and ideas here :slight_smile: Any help or guidance would be so welcome, I'm really at a loss.