I wanted to build my own Li-ion battery charger for a 7.4V battery. I hope someone will help.
Maybe look at sparkfun stuff https://www.sparkfun.com/products/10401
They have the Eagle files available. May take that and design what you need as a starting point.
That would be made from (2) 3.7V cells, so you'll need a balancer in the center for proper charging.
We'll probably cover this on a future episode, possibly the Portable Ouya.
I would like to supply one to my pi.
This is the charger Ben used on his portable Pi
http://www.amazon.com/TLP-2000-Tenergy-Universal-Charger-3-7V-14-8V/dp/B001BEXDRQ/ref=sr_1_9?ie=UTF8&qid=1388536553&sr=8-9&keywords=tenergy+smart+battery+charger
But I have no idea how to install a jack. I try to figure out Ben's way but .............. just can't.
Can Ben or anyone suggest a way.
