With the new Adaptive Fast Charging (AFC) technology for Samsung AFC compatible devices, your battery can go from zero to up to 50% in about 30 minutes, so you can spend less time connected to an outlet and more time connecting with people you care about. The Adaptive Fast Charging wall charger will charge other Micro USB devices without the Adaptive Fast Charging feature as well, with just a standard 9V-2 Amp charging rate.