Well, here is something that sucks. So for the past couple of days I have been playing the Lego Batman 3. The game was finished long ago, so all I am doing now is finding all the hidden items using all the unlocked characters, and buying a few unlocked characters I do not own yet. The battery dropped down to where the warning light flashes, and I hooked the adapter up and....
Nothing.
Came back an hour later and the battery was still low. I also noticed the blue light indicating the device is receiving outside electricity is not lit. So basically, either the adapter broke, or the port for the adapter broke. The only thing for sure is the battery is not what is broken. I am going to take the gamble that the adapter broke and see about buying a new one ( they go for about $7, right? ) and if that is not what is wrong, then I have wasted money on a new adapter and need to spend a lot of money fixing the 3DS. ( Although, there are videos on Youtube that show you how to fix the thing yourself. That is, if you want to risk damaging the 3DS beyond repair. )