u/Free-Committee-1202

Hi, I'm new to solar panel setup. I bought some panels off Facebook marketplace. they are qcell brand panels. When I added them together in series, both the voltage and the amperage went up. as if they are connected in parallel and in series at the same time.

I'm not sure why this is happening. I have other solar panels connected in series that do not do this. I'm curious if this is a user error that I'm overlooking or a feature of this brand of solar panels. I took pictures for reference using two solar panels. (same brand. same stats) any help would be appreciated.

thanks