Powerful yet compact - portable - home, office or travel, just grab and go. Charges 3 devices simultaneously. Supports smartphones, tablets, MP3 players, other USB chargeable devices. 15.5W power, 3.1A to share among 3 ports, offers up to max 2.4A per port in the first two ports, third port offers 1A.
so there is a possibility that one might damage their device using the cheap chargers/usb power hub?unless the manufacturer really fucked up, nothing bad would happen. a good charger would detect the connected hardware and supply the power supported on both ends.