Originally Posted by RAH
Obviously having those lights on is going to cut down on battery life; the only question is how much. Considering that in use they are on constantly (unlike the e-ink screen that, from what I understand, essentially only uses power on page turns and refreshes), you have to think it's going to be somewhat significant, even if they are super-efficient LED lights. So I'd be surprised if it isn't a significant hit.
but doesn't the NST have LED lights on all the time anyway? i was under the impression that the "touch" was implemented via a grid of LED lights just above screen level, which will be on as long as you are reading (they turn off when the screen saver comes on).
i won't even hazard a guess as to how much power the infrared LEDs drain compared to the glowlight LEDs, but the existing lights don't seem to cost all that much power.