Leftest that is allowed to participate

Then every separate service you give your face to is a separate service your city or national government can easily link to your physical movement, and that your supermarket (and anyone who buys data from the supermarket) can link to your purchases? Your situation seems like a great example of why not to give your face out even more places…?

Have you seen Streetcomplete? Android only for now, but amazing UI https://f-droid.org/packages/de.westnordost.streetcomplete

This will tell you which types of “fast charging” Power Delivery a cable will handle and if the cable supports data, and will identify some types of electrical faults https://treedix.com/products/treedix-usb-cable-tester-usb-c-cable-tester-usb-tester-for-data-transmission-and-power-transmission-cable-testing-resistor-testing-type-c-emarker-for-usb-a-micro-b-micro-b-3-0-type-c-lighting-mini-b

And this kind of thing will tell you how much power is actually being transferred (but nothing about data transfer) - as someone else mentions, this also depends on the device you’re charging/powering, and the power source, but it is a more immediately useful number than what specification is supported: https://www.aliexpress.us/item/3256807855183284.html?browser_id=c9623fd12fa5452c9941ee83c4bcb933&m_page_id=jrd5irtoihqcaaw419fcdda6dc0206069af12e5513