I have tested the charger intensive. Unfortunately, it loads at all 4 ports only with a maximum of 500 mA. My Tablet required instead of the usual 4.5 hours the original charger with this charger rekordverdächtigte 18 hours for a complete charge. In plain language, it can not be used for a whole day, as it is located on the charger. Too bad, but the 2 A charging current here seem to be just an advertising promise, because none of my devices could draw more than 500mA from the charger. Therefore, only 1 star.