Really? I put mine on lock for 2 hours while I ran some errands, came back and my Vita was almost dead (It was about half charged when I left).
Vita only gets 5-6 hours of battery life. You say you play 3 hours a day for 1 week without chargeing it? O_o Thats 21 hours of playtime off a single charge.
well, not EVERY day, but like every other, whenever i go to the bathroom. But point is, is i hardly charge it. Same with itouch. I never charge.