DIY Power Bank Box

thingiverse

Read before printing... I decided to make a DIY Power Bank using laptop batteries. This is a simple case. It holds 12...18650 Li-on batteries. I wired them in parallel. Below is the link for the circuit board I used. Read notes below. Overall measurements are...146.5 x 90 x 44.20 Circuit Board... https://www.ebay.com/itm/Dual-USB-5V-1A-2-1A-Mobile-Power-Bank-18650-Battery-Charger-PCB-Module-Board/332526402529?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 Printing... They should be orientated already when downloaded but print lid on its top and box on its bottom. Print the pin verticle with the bigger side at the bottom. I printed the main box at 20% infill and the screws holes and a little of the surrounding area was printed at 100% to add a little strength to the screws. Post Printing... Printers vary so openings may not be exact. In my uploaded pics I noted in blue as to the areas that I had to sand just a little to get the fit needed. The screw holes are just small holes, I drilled mine out to fit the screws I had in my desk. Assembly... Check fitment of parts before final assembly. The pin is actually an extension made for the power button on the board. You may need to sand the bigger part of the pin so it has a little play and not bind up. Insert the pin into the hole from the inside and install your circuit board. I attached usb cables to mine to hold in place and hot glued it in. Suggestion to solder wires to the board before gluing into place. Any questions feel free to ask me. Have a great day. Update...05/05/2019 I have added 2 new .stl files. The update is that the box now has beveled edges instead of square edges if you want that.