Plug the car charger into your car cigarette socket. When the indication LED is on, plug the input port into the NDSi port.
It will charge the Console while it is playing or in standby mode, providing you with continuous playing time during those long road trips.
Package Includes:

• USB Car Charger (can plug in any USB cable for charing the DSi or other portable device)
• USB charging cable for DSi
  Input: DC 12V
  Output: DC 5V
  500 mA