Sorry to make a topic like this. After scanning through the forums for a few weeks, a topic similar to this comes up almost everyday, but i haven't seen any answer this. What is the best cart that can just play DS games and has the lowest battery consumption? I already own a CycloDS, and i love it. I know there is no better for functions and support. I have not had one problem with it. But.... That all said, i am looking for a cart that has minimal battery consumption, but still 100% (or close to) rom compatibility. Due to owning the CycloDS, i am not to interested in other functions as i already own the best for it. Would it be the R4? I have looked around at almost all cards there are, but non ever talk about battery life.