Why won't a apple usb cable charge my ipad?
So I left town for work and forgot my ipad charger. I've tried a generic once for ipods that didn't work and I also tried an offical apple usb cable direct to the computer and that didn't work. Anyone have any suggestions on why those don't work other than buying an ipad specific one?
The USB ports on most computers are too low power-out to charge the ipads with them powered up. They will slowly charge the ipad with the ipad sleeping.
It will say "not charging" when awake, but it may very slowly charge.
The ipad supplied charger is 10 watts (5 Volts at 2 amps)
The iphone/ipod chargers are typically 5 watts (5 volts at 1 amp)
The typical computer's usb port is 2.5 watts (5 volts at 0.5 amps)
Note: Some of the newer mac's have a higher powered usb port and will give a good charge indication on the ipad.
Hope this helps...
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