Apparently, someone listened and now there is crucial information directly in the first paragraph:
It certainly feels like QWERTZ is once again in low supply. But hey, last time they've ended up upgrading my Pro1 order to a Pro1x, who knows, maybe I'll get upgraded to a Pro2 in a couple of years.
Sorry, I thought I could be clever and recrop the old photo . Here's a new one:
Confirming company is Shenzhen Kehuaxin Electronic Co Ltd (I couldn't find their batteries online) and model is 5036108PLN (pretty sure those are 0s). Guessing the "KHX" is an abbreviation of the battery company and the battery is about 1 year old.
Thanks, I'll check it out!