Simply plug the charger into an AC outlet and connect one end to the 5.2V input of your 3DS (r)/DSi (r)/DSi XL r. Your device is ready to be re-energized for extended play. Simply plug the charger into any AC outlet and connect the other end into the 5.2 V input on the 3DS(r)/DSi(r)/DSi XL(r) and your device will ready to be re-energized for extended play For 2DS(tm)/3DS(r)/DSi(r)/DSi XL(r) systems 110 Volt power supply Keeps batteries fresh!