Hi everyone, I just bought a Cosmic Black 3DS and I'm looking for the best way to extend my battery life. I personally don't really mind the shorter battery life of the 3DS compared to it's predecessors, but longer playtime is always a good thing. Some things I'm looking for are: -Preferably detachable, not a replacement battery. I'm trying not to void my warranty in case something goes wrong -Something that won't make it bulky, I want to keep my 3DS how it looks generally -Matches my Cosmic Black 3DS. If anyone knows of such accessories that meets my expectation, please share thanks.