>> Lately I found a power bank with 10000 MAh. Just like you annihilate the whole thing ....
>
>Mega amper hours? How big was that?
>
>Likewise, I have once bought a „500W“ case with a power supply. The quotation marks aren't abused here, they are correct - the „500W“ was just the name of the product, the power supply in it is 250W strong.
>
>Right in front of me I have few rechargeable batteries, of 2600 mAh. Model name? „2700“.

It was simple 10000mAh. But some idiot knowing no nothing decided to cry in capitals. While 10Ah would have prevented the planet from more pollution.
The fun is the energy density of 10GAh in the volume of a common power bank. Core of Sol? Or more? (I'm to lazy to look it up). Imagine it ignites in your pocket. :D

Nice examples. Mine at least was only misspelled, and not pretending to be something it is not.
Reading broadens the mind ...