1. It is not the iPad that has a problem, because the charging voltage of the charger with the iPad is \"5.1V and 2.1A\
2. When the iPad is connected to the PC through USB, it is also in the process of charging, but due to the low voltage and current, the charging speed is extremely slow. Under normal circumstances, it takes about 2 hours to charge the iPad with the original charger of the iPad, and it takes 10 hours or more to fully charge the iPad with the connection of the PC, in this case of low voltage and current. May wish to try, turn off the screen, wake up after half an hour to look at the screen, you will find that the battery level has increased. Of course, Apple all-in-one and Apple laptops can use USB ports to charge the iPad, because their output voltage meets the iPad charging standard.
solution
1. At present, there are two ways to try, one is to install a program called \"Ai Charger\" on the computer, which allows the PC to support iPad charging, by modifying the USB current Settings of the registry.
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