Power bank

grabcad

This is a power bank case in two parts.Require item:3D printed case18650 li-ion battery 4 Pcs. (see below links)Power bank Board(see below link)M2x4mm wooden screw 2 Pcs.Power bank PCB:https://www.ebay.in/itm/5V-1A-Power-Bank-Charger-Board-Charging-Circuit-PCB-Board-Step-Up-Boost-Module/302784764711?hash=item467f60db27:g:jb8AAOSwHpdZxqNxhttps://www.banggood.com/DIY-Power-Bank-Motherboard-Circuit-Board-Lithium-Battery-Charging-Board-p-1311987.html?rmmds=search&cur_warehouse=CN18650 li-ion battery:https://www.ebay.in/itm/4PCS-100-Original-Samsung-18650-2600mAh-battery-ICR18650-26J-Li-i/123242535699?hash=item1cb1d3db13:g:nRQAAOSwuuRapqujhttps://www.banggood.com/4PCS-Samsung-INR18650-30Q-3000mAh-Unprotected-Button-Top-18650-Battery-With-Protected-box-p-1184782.html?rmmds=search&cur_warehouse=CNDescription;Print power bank case and make a hole for PCB mounting and connect 4 pcs. of 18650 battery in parallel and connect 18650 batter positive and negative terminal on PCB B+ and B- and put the 18650 batter in the case and insulate between battery and PCB using Kapton tap or any other electrical insulation tap and fit the top case after that fit the two part of case using transparent instant adhesiveready for use.