Powerbank DIY 12000-16000 MAh 2.1 Amp 3D-printed With LED-flashlight

Hi everybody! Im sick and tired of all these small and ugly powerbanks that doesn´t have capacity enough to even charge your cellphone once. So this is how you make your own that you can customize with diffrent lids with a capacity up to 16000 mAh. There is an assambley-video step-by-step on the youtubechannel.

Tools:
Solderiron - https://goo.gl/SE2Kiz

Solder helpinghand - https://goo.gl/nwfH0x

Cutting Plier - https://goo.gl/HxB7kO

3D-printers - https://goo.gl/OHhp14

Bill of materials:
USB-PCBCARD - (2$) https://goo.gl/L0R7sK

Batteryholder - (2,5$) https://goo.gl/Z8Y3ob

Batteries 4000 mAh - (13$) https://goo.gl/aR71OZ

Step 1: Download and 3D-print the Parts.

You will need a bottom, a lid and a powerbutton, you can find everything at thingiverse:
http://www.thingiverse.com/thing:2261807

I printed it at 20% honeycomb-infill PLA.

Step 2: Assamble

First insert your powerbutton.

Step 3: Solder

Solder your batteryholder to the USB-PCB, red to bta+ and black to bta-. MAKE SURE TO WIRE IT IN PARALELL! like in the picture, else you will burn the PCB due to high voltage!

Step 4: Assamble

Assamble the PCB and batteryholder,insert batteries, try if it work before you glue everything in place!

Step 5: Tight Screws

Tight the screws and enjoy. The outputs and inputs schematics is:
[ 1amp ] [ Input ] [ 2.1 amp]

You may also use it as a LED-flashlight two fast clicks on the powerbutton and the LED lights up.

There is links for all the part on the youtube-page and on the thingiverse-page-

Please check out and subscribe to my youtube-channel: