Hi! I'm back with another project!

As the title suggested this is a handmade power bank which has a capacity of 4A. Why I built this will be reveal at the end.

Power Bank Description:

Can hold at least 4A
3 USB Ports
Rechargeable
2 LED in case of emergency. You can adjust their brightness with the potentiometer.
It's very light since the case is plastic.

Step 1: Set Up

This is the layout for the inside of the power bank.

Obviously you need at least 4 18650 batteries.

I got mine from eBay.

http://www.ebay.com/itm/361555724790?_trksid=p2057...

I also bought the 5V converter.

http://www.ebay.com/itm/121711214999?_trksid=p2057...

Note that I had to solder off the two usb ports and relocate them to where I want. If possible get a heatsink. In my case I used cable ties to secure the converters on the heatsink.

Also you need 2 LEDs (optional)

I'll show you what they look like in the next page...

Step 2: Cover Up the Bottom

I just used 4 screws to secure the base.

Step 3: LED

LEDs demonstration...

Step 4:

This power bank is perfect to bring with me on a camping trip to recharge my phone or this flashlight. If you're interested I would love to go over how I made this...