I have a n3ds XL on 9.2 firmware (USA) and I use gateway but recently I have noticed a few issues with the battery. I always shutdown my 3ds because I notice that the battery lasts only a few hours when I have the 3ds on sleep mode (not sure if that is what it is called, which is when a game is running but you just close the lid) My SO has a n3ds on 9.9 and I know a few other 3ds users that do not use gateway (emunand) and their battery lasts way longer (hours) than mine does and I am not sure what might be causing it. Eg, If i have a game running on emunand, i close the lid and the 3ds is fully charged it seems that under sleep mode it takes around 4-5 hours for the LED light to start turning red. The 3ds is about 2 months old, so I dont think it's the battery. I did notice that according to the game usage of the sysnand it says that I spend hour and hours using the settings application, which is how I launch gateway (mset) might it be that for some reason both sysnand and emunand might be consuming battery power? I am opened to ideas and opinions, I would like to know if others have noticed the same thing.