I would bring a battery to test the voltage and resistor to test that - anything else I can easily bring to test the other functionalities?

Thanks for the insight!

They look like very polished hobby projects.

So good learning examples?

You mean the Seeed XIAO boards right? Because most what I saw of them they were using the RP2040 chip (which is not ESP under the hood...is it?)

Germany I am afraid.

I have no idea - how do I test that safely?

I think that might be the most accurate translation

Also a selection of the MC logic(?) ICs

Galaxus on their website: https://www.galaxus.at/en/page/transparency-regarding-countries-of-origin-34177

In the legal definition stated by the European Union, country of origin denotes «the country in which the major part of the value was added.» We’re guided by this interpretation.

But unless the majority of value was added in branding for some variants, I don't understand why the 64GB variant of https://www.galaxus.de/en/s1/product/goodram-ume3-usb-30-128gb-eco-friendly-128-gb-usb-a-usb-memory-sticks-17543048is "made in germany" while the 128GB is made in China.

So I assume their "machine translation" hallucinates at some point.