from experience I can tell you that shutting down does save power. I did it when I went to visit my parents for a couple of weeks. when I first got it. And despite my reading more per day (and I read for about 3 hours a day normally) the battery took almost 2 weeks give me a battery warning.
It's also fiddly and annoying so I spent the 10 euros to buy a PSP charger on the next visit.
Last edited by Riocaz; 06-01-2009 at 12:12 PM.
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