IP5358 two-way fast charging power bank

Author in the original B station: https://www.bilibili.com/video/BV1TM4y1K7pZ

Basically, while keeping the number of 18650 batteries unchanged, the size of the power bank shell has been reduced from the original 75*29-110mm to 82*27-100mm. The length is reduced by 10mm, the width is reduced by 7mm, and the height is reduced by 2mm. For this purpose, I adjusted the width of the original motherboard, as well as the size and position of the screw holes on the front panel.

To reduce the size of the case, you need to use the small case in the link above (seems like nonsense), the modified mainboard PCB in this project, and the modified front panel PCB to replace the original solution. Other installation methods are consistent with the original author's plan, and the specific operations are in the original author's B-site introduction video.

The following are the pain points I discovered during use, which will be improved, verified, and continuously updated later:

The front panel has holes drilled directly in the light transmission area, causing the light emitted by the LED to be somewhat dazzling and not soft.

This problem requires removing the original drilling area, and then removing the oil cover and copper paving on the front and back sides at the original location, leaving only the fiberglass board.

At this time, the fiberglass board will weaken the light and at the same time play the role of uniform light.

I will verify the effect of this solution on this front panel design as soon as possible and then update the project.

The reference effect of this program in previous projects: