The file 'UPS For Router 12V 1*21700 3D Printer Model' is (stl) file type, size is 1.5MB.
The project itself is a reserve power supply for a wi-fi router. It consists of a 21700 lithium battery, a PCB UPS from aliexpress (https://www.aliexpress.com/item/4000443819519.html?spm=a2g0o.order_list.order_list_main.753.21ef1802ojNaQ4) and a 3d printed housing. Everything connects together easily and works just fine.
UPS-Housing_-_Box.stl | 104.0KB | |
UPS-Housing_-_Fixture.stl | 3.6MB | |
UPS-Housing_-_Lid1.stl | 75.5KB |