Even Wired thinks Sony's PR Spin on DSi is "crazy talk"

[theprof00]

it may seem so to you, who plays in dark areas for some reason lol.

Needless to say, you will at least be losing 25% battery time, even if you don't use any extra settings. I would be losing somewhere close to 50% battery life.
I think that is a more than just a silly complaint.