The cable Apple supplies with the IPAD, although adequate for computer synching, is not really long enough for use conveniently as a power supply or for recharging.
I tried using a 2 metre USB extension but that did not always provide an adequate current.
This cable however works perfectly. Virtually no voltage drop at all
Ordered on Friday morning, got it next day.
Nice substantial thing too !
Well recommended for those of us that like to use the IPAD from bed !
Update more than a year later.
Tempting fate, but I can report that despite considerable abuse by me, this cable still functions perfectly.