Objective-To build a LI-ion portable charger circuit and put it in a altiods tin.
Prerequistites-Basic soldering/wiring expirience
Level of Difficulty-Easy
About the Pcb: Press Once to turn on and once to turn off. The Pcb has a white led diode that lights up if you hold the power button for three seconds; same time for turning it off. The blue led's will flash in a row when the battery is charging. The Amount of Led's that shine when it is turned on indicate the percentage of charge the battery has(One Led equates to 25%). The Pcb has a 3.7 volt input and an output max of five volts.
The first thing you want to do is solder the battery LI-On battery to your pcb. Positive goes on B+ and negative goes on B-. The way I did mine is that I applied solder onto my wires and then put them through the holes and reapplied solder to make them fit nicely.
You need to have space for the outputs and the led to stick out so you need to cut the tin. I cut out a bit off the top and bottom of the tin. Mine is kinda crapy since I used a sizzors because i don't hsve a fancey drill but if you hae a drill and what a better fit go for it!.
You need to glue the circuit and the batterry into place or if you happen to not have a strong glue like me you can just put the curcuit and battery into the container and hold evrything in place with some cloth or pieces of paper.Optionally you can glue the container shut like I did since I dont plan on opening it.Mine looks pretty ugly since I was in a hurry to make this but I know you guys can do better!