A lot of computer USB ports do not supply enough current to charge your iPad while the screen is on. If that is the case, you will see a "Not Charging" message plastered on the screen just beside the ...
Your new iPad comes charged right out of the box, but the factory charge may have faded over time. For a full initial charge, the best method is to use the sync/charge cable that came with your iPad ...
The iPad won't charge using the USB 2.0 ports of some older machines, like my $2,500 Mac Pro from 2006. Lots of people are complaining that their iPads aren’t charging when plugged into their computer ...