Hi Dinche
I am currently using the NWH10 adapter cable to connect to my Hugo but the ZX1 loses power in as you say 3-4 hours.
If there was a way to inject power to the ZX1 at the same time as getting hd output, then that would go someway to solve the problem.
The cradle looks rather large for mobile use, but I was thinking that it may be manufactured like the Xperia phone docks are in that they use a cable which is mounted inside of a plastic casing; and the cable can actually be removed from the casing to use alone.
I have not seen the unit and am probably talking rubbish, but thought I would ask anyway.
Does that make sense?
The diagram below from Sony JP show what I am talking about, but it is not clear how the power is injected if the cable is standalone. That said, their website also shows a pcb inside of the cradle, which may be feeding in the power...