USB is 5v, so even 230v would be stepped down to 5v, if the output is to not fry the gear attached to it.


I suppose you could bring a 12v battery [lead acid gel cell for Motorbikes *and charger for it,

then go from 12v to 5v while on the move.. another transformer & voltage regulator.

* or 8 D cell alkaline (1.5V) 10 rechargeable flashlight batteries (1.2v each)