Cherry G80 modified with K375S Unifying dual-mode PCB

This early version of the K375S main controller was modified to use the PCB

onboard charging module of a Cherry G80-3000.
It features overcharge and over-discharge protection

, two slide switches (one for the spacebar and one for the down
switch), requiring keycap removal for activation, and one external switch. It uses a 1.25mm pitch female connector and can be mounted on the casing using an 8mm self-locking switch soldered with 1.25mm pitch wire.

The battery-powered portion is negligible. This PCB
uses a 1.25mm pitch lithium battery connector, supporting up to four lithium batteries. A single 18650 3000mAh lithium battery can typically provide over a year of standby time, so having more seems unnecessary.

 
PCB details
 
are available on Taobao; link:
https://item.taobao.com/item.htm?id=655258129958&spm=a1z10.5-c.w4002-2306407950.13.51dc3fd3T8Hu4w&sku_properties=5919063:3266779;211004089:1112359341
 
(3D) 3D printed positioning plate:
https://makerworld.com/zh/models/212587#profileId-232242
 
Silent pack blueprints:
https://gitee.com/micahyy/mao-keyboard/tree/master/A.NRF52840%20%E4%B8%BB%E6%8E%A7/G80_3000%20%E9%9D%99%E9%9F%B3%E5%8C%85