I have measured the ClearNav on full brightness at 605mA, on power save
where it drops back to 'low', still easily bright sunlight readable,
until you press a button, below 400mA.

The figures from Craggy gave the Ultimate as about One and a half Amps,
but I haven't seen any independant measurement. For a screen that big and
bright with touch screen, that sounds about right.

At 01:21 11 October 2008, sisu1a wrote:
Doing it at a reasonable current draw is the hard part.
Most of these 1000 nit plus screens draw around an amp at full
brightness.