A project log for Qi and USB Li Charger Flex Module

Charger system for Li batteries with fuel gauge. Works with Qi wireless or USB power source. For sale on Tindie.

chris-hamiltonChris Hamilton 04/04/2015 at 18:110 Comments

Yield is very low and required re-working. The spacing per component is cramped, but it is just too much solder paste for the amount of area. It takes approximately 30-40 minutes to complete one which effected the slump and workability with my new 4300LF paste wasn't holding up well either. I think I'll stick to SMD291SNL for more complicated boards (and in general). I am going to be testing the board, but it will be expensive to sell at this point. I will try to minimize the Qi wireless capacitor count as much as possible.