@derf Can you actually do any USB killing with it? They should not be doing this, but any USB device should probably expect 20V on the input these days... and my guess is that many devices will tolerate 12V just ok.

@pavel @derf anything that was a microusb design, now with a type-c port, will not survive it. plenty of them

@whitequark @derf Why do you believe it will not survive 12V?

I guess you should not try, because it may be out of spec for the devices, but old Nokia phones were designed for 5V charging, but were actually designed to survive 15V IIRC according to service manuals.

I'd strongly suggest anything USB to survive 20V these days, and may guess is that a lot of hardware would actually survive.

@pavel @derf because I design electronics and know how it's put together? it's pretty normal to use components with absolute max rating of 6-7 V if you're not using USB-PD explicitly. it adds cost for very little gain, so it is generally not done

@pavel @derf anyway, you're welcome to take 10 random devices around you and subject them to this stress if you don't believe me lol

@whitequark @derf Yeah, I'm not stupid enough to do that. But if you are designing devices... please make them tolerate 20V on USB. It should not be that expensive. (Polyfuse?)

@pavel @derf I will for the next iteration of the thing I'm designing, exactly because of the prevalence of these horrible out-of-spec supplies; but I reverse-engineer a lot of consumer devices and I'm gonna tell you that basically only those which actually use higher voltages to charge seem to have any protection against Vbus overvoltage that I've seen. (I'm not perfect at RE and I usually only give limited attention to power circuitry but protection does stand out a bit)