Hey, I am playing currently playing Pokemon Diamond on my 3ds. I fully charge it, unplug it and play 1-2 hours on it. I then put my 3ds in sleep and leave it on the side. When I did this, the battery led was still blue. I leave it there for almost a day, I come back to it to find that the battery is almost drained out. Is this because I am running an flashcard that has to power the microsd? I am really skeptical about how my 3ds "sleeps", it seems like it only shuts the screen off but keeps running unlike how a computer sleeps. Or this is because the auto save feature is turned on on the AceKard so the 3ds never really "sleeps"? Any help will be appreciated.