Hey, I'm looking for something to extend the battery life of the DS. Like, no a new battery since I don't know how to work a screwdriver and my battery is fine(bought DS in early Feb). But I might go on a trip this summer which includes a very long plane ride. And I use my DS a lot, have homebrews and stuff on it. So, they would suck up more battery life(flashcart). Is there anything to extend it(10 hours?)? Something that doesn't make in bulky and something that can be put in my purse and not make it bulky? And I have small hands, so I'm not sure if the charger grip would work(charger grip is ugly though). Thanks!