Converting 100-240V, it provides an output of 3000mA which extends the convenience of your 12V car chargers. With the Cellet power converter female adapter you are able to use your vehicle power chargers as AC travel chargers. Simply plug in the cigarette lighter socket into the power adapter and plug into an AC outlet. Please note: this adapter provides enough power for smartphones, GPS systems, MP3 players, cameras and other small portable devices. Not recommended for tire and airbed inflaters, heated blankets, vacuums and other devices that require more than 2 amps of power.