On a side note, story to tell.
So yesterday I woke up to what I pretty much dreaded all along. See, my 3DS actually has an issue when powered on and charging: the charging flickers. It was not a good flicker, either, the backlight for the top screen would brighten and dim in rapid fashion and the charging light, along with recognition of the charger being plugged in, went on and off with it in sync. I was worried the 3DS was probably shorting somehow and would fry in due time and never turn on again.
Well, sure enough, it didn't die but it stopped charging yesterday morning. I tried everything, power cycling the thing, using different outlets. No juice except the little that was left in the battery. Frustrated, I kept troubleshooting every way I knew how, and finally remembered an old conversation from this thread about powering via USB. I grabbed a spare cable (Mom used to work Verizon so I have both a ton of phones and a ton of Micro to Full USB cables), cut it apart, found a 5V charger and tested the red and black wires.
...it recognized it.
I happily went and cut the two cables apart, the 3DS charger and the USB cable, and spliced them, red to red, black to black. My multitool and electrical tape were my best friends there. I get it all looking good, plug it in, and...
SUCCESS! It charged, and not only does it now charge (with a worrisome overvolt of .4V but I'll take it), the stuttering problem disappeared! I can keep the device open and play and there's no more electrical issue!
So, moral of thos story, don't buy a 3rd party 3DS charger because they're a no good, flaming, UTTERLY CRASS LITTLE PIECE OF--