col.bris said:Personally I suggest charging from the wall socket. It just works every time.
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talon90 said:Most USB ports will charge the iPad2. The difference is that they generally do not have enough power to charge the iPad while it is in use. If you plug it in to the USB port and leave it alone it will charge. If you plug it in and then turn on the iPad you will see "iPad not Charging" once you turn it off it will go back to charging and after a couple to a few (depending on battery charge when starting), it will end up being charged just fine.