I'm starting to gather some pieces and build various portions of a saber and would like to make it as modern, from an electronics perspective, as possible. I've got one set of electronics built and various portions of MHS hilt that I'm playing with. One thing I'd really like to do is add USB charging to it.

I've done quite a bit of electronics work and I've fiddled with Adafruit's Li-Po/Li-Ion charging circuits. I'm using one right now to charge a double 3.7v 18650 cell battery. At this point, I should be able to get 500mA charging without an issue, but I'd like to get at least 1A if I can with the newer USB-C version (if it can handle it).

Has anyone else gotten something like this to work with a saber here? I'm always overly cautious when it comes to batteries and charging, because I know it's not as simple as it seems, so I wanted to check first. Especially when I want to charge an $80 CFX.