Originally Posted by
Uplinker
Indeed. I am sure that knowing the IV = Watts formula etc. and being able to correctly apply it, or rearrange it, is NOT part of an airport security person's training !!
Anything you want to take through security needs to state what security personnel have been told to allow.
And that's slightly wrong, too - because there's no issue with a 700W power bank/battery if you can find one, but they're actually after energy capacity. Which is charge (in amp-hours instead of coulombs) times nominal battery voltage (not written on the pack) equals energy in watt-hours.