iPad: Charging the battery
iPad has an internal, rechargeable battery. To charge the battery, try the following:
* Connect iPad to a power outlet using the included cable and the 10W USB power adapter.
* Connect to a high-power USB 2.0 port using the included cable.
Note: Some USB 2.0 ports and accessories do not provide enough power to charge iPad. When this occurs the message "Not Charging" appears in the status bar next to the battery icon.
An icon in the upper-right corner of the screen shows battery charging status and approximately how much charge is left in the battery. If you charge the battery while syncing or using iPad, it can take longer to charge.
Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced. Battery life and the number of charge cycles vary by use and settings. For information on how long the battery is expected to last between charges, see the iPad Technical Specifications.
Charging Tips
The fastest way to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter. When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it's in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.
Additional Information
If iPad is very low on power, it may display one of the following images indicating that the device needs to charge for up to ten minutes before you can use it. If the device is extremely low on power, the display may be blank for up to two minutes before one of the low-battery images appears. If you don't see the white charging or plug icons, try connecting to the 10W power adapter.
"Charging is not supported with this accessory."
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