Introduction: 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:
23 Comments
Question 3 years ago on Introduction
I have all the items. Minus the box, as I don’t have a printer. Question... how would one hook up a small wind turbine to power the batteries? I’ve an idea but wanted an better option . Thx
5 years ago on Step 5
Nice 3D printed case, although you used the fake UltraFire batteries that are only 650mAh. you can see the fakes by the "Sheef-life around 10 years" Measure your actual capacity and you will see.
Reply 5 years ago
I know, those were only for visualise how to do, i have other better ones. Best regards
5 years ago
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!
Reply 5 years ago
sorry it does not :/
5 years ago
I'm guessing to recharge it you need to open it up and replace the batteries inside is that correct?
Reply 5 years ago
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
Reply 5 years ago
Last things: does it need to be ventilated and do the batteries need to be rechargeable
Reply 5 years ago
no need for vent, yes they have to be rechargable
Reply 5 years ago
And also what are the dimensions?
5 years ago
what is the sizes of each part
5 years ago
What size screws did you use?
Reply 5 years ago
M3
6 years ago
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
Reply 6 years ago
thank you, i put the links at the first step now :)
6 years ago
sadly don't have a soldering iron maybe I should buy one
Reply 6 years ago
you can find a cheap one here for example https://goo.gl/SE2Kiz :)
6 years ago
Nicely done ;)
Reply 6 years ago
thank you! :) glad to get some feedback, cant wait to my next instructable :)
6 years ago
I like your 3D lid designs. Good job buddy!! :)