Got this USB cable for my 3DS from China!
A charger with an output of around 5V it will work but charge slower than normal. USB 2.0 on a Laptop or Desktop will work the same way. USB 3.0 should charge the 3DS around the same speed as the included charger from Nintendo.
Latest Video - tinyurl.com/l8tmu6r
Cheap XBox 360 charger - tinyurl.com/lazvz67
https://tarokunlife.wixsite.com/jcat