I just bought a 40 Watt charger with five USB slots. Charges up to five devices simultaneously, iPads, iPhone, and everything else. For much much less money than this contraption. Works like a charm.
I really haven't figured out yet what a "smart" charger would do for me and why I would want one. I plug in a device, and when I need it it is either charged - great - or it isn't quite charged, not so great, but what would a "smart" charger do differently?
I'll hereby promise to vote up anyone who can give me a reason why I would want this device instead of my 40 Watt, 5 slot, "non-smart" charger that just charges whatever you plug in.
BTW. My charger has a cable. Which means the maximum distance between wall plug and device is not the length of my USB charging cable, but the length of my USB charging cable, plus the 1.5m length of the cable on the charger itself. It also means that I don't have to kneel down at the wall to plug in the USB cable. A lot more comfortable.