I don't know why you are all so worried about battery consumption, its almost a garuntee it will have a rechargeable lithium ion battery (just like the GBASP) and wall/car adapters.
I am much more interested in what kind of games they are going to be launching with it and what the controls will look like.
One other rumor is that it will double as a wireless (thru cell phone technology) web surfing device. That would be pretty awesome.
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