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

Picture of 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.

Solderiron -

Solder helpinghand -

Cutting Plier -

3D-printers -

Bill of materials:

Batteryholder - (2,5$)

Batteries 4000 mAh - (13$)

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

Picture of Download and 3D-print the Parts.

You will need a bottom, a lid and a powerbutton, you can find everything at thingiverse:

I printed it at 20% honeycomb-infill PLA.

Step 2: Assamble

Picture of Assamble

First insert your powerbutton.

Step 3: Solder

Picture of 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

Picture of Assamble

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

Step 5: Tight Screws

Picture of 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:


thebeachtoday (author)2017-07-26

Does this have simultaneous charging? I would like to have a Raspberry Pi [draws 1.5A] to the USB-out and allow charge the power bank overnight but let the RPi run continuously. Good work! Case looks great!

Kims3DIY (author)thebeachtoday2017-08-13

sorry it does not :/

diamondguy43 (author)2017-07-16

I'm guessing to recharge it you need to open it up and replace the batteries inside is that correct?

Kims3DIY (author)diamondguy432017-07-17

you dont have to take it appart to charge it, use the micro usb-connector. I dont have it right now, im on vaccation, but its something like 8x 14 cm

diamondguy43 (author)Kims3DIY2017-07-17

Last things: does it need to be ventilated and do the batteries need to be rechargeable

Kims3DIY (author)diamondguy432017-07-17

no need for vent, yes they have to be rechargable

And also what are the dimensions?

Geekthief (author)2017-06-27

what is the sizes of each part

jonathanwash (author)2017-06-08

What size screws did you use?

Kims3DIY (author)jonathanwash2017-06-09


tutdude98 (author)2017-05-01

Nice design, but you cant get more than 14000mAh on 4 batteries (LG 18650 3.5Ah), everything else is fine except you could maybe add where you bought your converter

Kims3DIY (author)tutdude982017-05-01

thank you, i put the links at the first step now :)

DanielB770 (author)2017-04-30

sadly don't have a soldering iron maybe I should buy one

Kims3DIY (author)DanielB7702017-04-30

you can find a cheap one here for example :)

Frano35 (author)2017-04-28

Nicely done ;)

Kims3DIY (author)Frano352017-04-29

thank you! :) glad to get some feedback, cant wait to my next instructable :)

Canvas of Dreams (author)2017-04-28

I like your 3D lid designs. Good job buddy!! :)

thank you :)

Swansong (author)2017-04-28

That looks good :)

Kims3DIY (author)Swansong2017-04-28

thank you! :)

About This Instructable




Bio: DIY, 3Dprinting,Concrete, Electronics, Maker
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