DIY 13,400 mAh Powerbank

I couldn’t find a case with both a screwless design and swappable batteries using a battery holder, so I made one myself.

This power bank is designed with a snap-fit mechanism. The charging module fits snugly into a dedicated slot to keep it stable without fasteners. The battery holder allows for easy removal and replacement of the batteries.

To reduce the number of parts needed, I designed the case so the module’s power button can be accessed from the outside without any extra components.

Components:
- LED Dual USB 5V 2.4A Micro/Type-C USB Mobile Power Bank 18650 Charging Module Lithium Battery Charger Board
- BK-18650-PC8 (Quad Slot Battery Holder)
- 18650 Batteries (x4)