Hi. I've got a DS Lite and am using a 3-in-1 to play GBA games. I expect this is the same as using real GBA carts, but does only playing GBA games on the DS give better battery life than playing DS games. As far as I know it would due to the use of only 1 screen and I think it uses less of the DS' power. I hear that the DS lasts about 5-6 hours on the brightest screen setting. Does this increase when playing only GBA games?