Instead of the sane approach of specifying 5, 9, 12, 15, and/or 20 volts and the amperages, products insist on listing every model of device in existence instead.
Most will do 12V, but I always want to make sure it’ll power my laptop (20V) as well.
A big thank you to reviewers who post images of the actual products where it shows the relevant info in one short line on the labels:
e.g. PD Output: 5V=3A, 9V=3A, 12V=3A, 15V=3A, 20V=3A
For some reason, “amperage” mildly infuriates me. It’s current.
Voltage equals amperage times ohmage.
Then why doesn’t “voltage” bug you? It’s the same sort of word: unit + “age”.
To fully satisfy you, it should be:
electrical potential difference = current * resistance.
Why is ‘voltage’ fine then?
Because potential sounds weird?
It only sounds weird because you’re used to ‘voltage’.
And wattage only sounds weird because you’re used to power.
Where did I say wattage sounds weird?
Ohmage? You mean resistance?
That was the joke. They are making everything in the equation end in -age. Because “amperage” bugs them.
Volt + age
Amper(e) + age
Ohm + age
In other words, ohmage is an homage to amperage.