This design is based off my Simple USB 5V/2A Power Bank by diyau | Download free STL model | Printables.com but it is modeled to look like the UTS Tower.
This is a snap fit case to build a USB power bank using the required parts (sourced from Aliexpress). An off-the-shelf battery holder is used to make it easy to build. You can easily make your own battery holder if you prefer.
The USB board supports 5V/2A Input or Output with LED indicators to show battery remaining.
USB-A port for power out. (eg. charging your phone)
USB-C port for charging (power-in) the power bank.
USB charging board (weld USB option): https://www.aliexpress.com/item/1005001589184111.html?spm=a2g0o.order_list.order_list_main.15.5ff11802umM3Aq
18650 SMD/SMT Battery Holder: https://www.aliexpress.com/item/32831937650.html?spm=a2g0o.order_list.order_list_main.9.5ff11802umM3Aq
18650 Lithium Ion battery (3.7/3.8V nomiable) of your choosing.
Optional: 14mm x 14mm x 6mm heatsink, should be painted heatsink to avoid short circuit with components on board: 5pcs 14*14*6 Aluminum Cooling Heat sink 14 x 14 x 6MM Black Chipset RAM Heatsink Radiator routing cat dedicated chip 14*14*6mm|Lamp Radiators| - AliExpress
Thermal Paste/Adhesive (to secure the heatsink to the board/case)
22AWG gauge (or wire rated to carry up to 5 amps) insulated wire in red/black colour
Layer Height: 0.20mm
Supports: Required on build plate only.
Material: Any (Polymaker Polywood was used for the base/lid to give it that brown colour, and any white filament will work for the “UTS” logo)
The author remixed this model.