Pages with tag Battery Packs
How to Make the Ultimate 18650 Power Bank with Infinitely Expandable Capacity
Why should commercially made power banks be so expensive and so small? This DIY powerbank can be built by anyone at a fraction of the price of commercially made power banks. This unit can power not just USB devices, but 120 volt AC devices, it charges over USB or USB-C, and contains voltage displays. This plan reuses a lot of commercially made components. What makes it work is some highly customized 3D-printed parts from which the case is built.