I don't know if a thread like this already exist on here, at least I can't find one. I would like to make a list on all the different flash carts on DS Lite about their power comsumption to see which card last the longest playing time. My R4 only last for 4 hours with screen brightness setting at 2 with mild volume turned on. I also got myself a DSTT but havn't had the chance to test it out, but notice it last longer than the R4 (with the same setting). I would like to about other flash carts, especially the Edge and Acekard 2/2.1, please give me your opinions, thanks!