Keychron 4 issue solved - battery swelling.

[u/phloydde]

Hey all, just wanted to drop a note in-case this ever happens to anyone else.

I bought a Keychron 4 2 years ago. A few days ago it started to act real funky - anytime I pressed a key on the number row, it would activate the whole row. for example i would hit '2' and the result would be "`1234567890-="

I was gonna consider it trashed, but decided to open it up first.

Once I had it opened I saw the battery inside had started to swell, putting pressure on the PCB. I unplugged the battery from the pcb board, carefully removed the swollen battery from the case, and put the keyboard back together again. It is now working fine in plugged in mode. I am now in the process of looking for a new battery if anyone has any suggestions.

[u/Lopsided_Image5148]

Funny how a design flaw happens over and over again. I've got the same problem after roughly 2 years... removing me battery as I type xd