Apple iPad iOS 4.2 - Manual (Page 33)

Charge the battery: The best way to charge the iPad battery is to connect iPad to a
power outlet using the included Dock Connector to USB Cable and 10W USB power
adapter. When you connect iPad to a USB 2.0 port on a Mac with the Dock Connector
to USB Cable, iPad may charge slowly while syncing.
Important: The iPad battery may drain instead of charge if iPad is connected to a PC,
to a computer that’s turned off or is in sleep or standby mode, to a USB hub, or to the
USB port on a keyboard.
If your Mac or PC doesn’t provide enough power to charge your iPad, a Not Charging
message appears in the status bar. To charge iPad, disconnect it from your computer
and connect it to a power outlet using the included Dock Connector to USB Cable and
10W USB Power Adapter.
Important: If iPad is very low on power, it may display one of the following images,
indicating that iPad needs to charge for up to ten minutes before you can use it. If iPad
is extremely low on power, the display may be blank for up to two minutes before one
of the low-battery images appears.
or
Maximizing Battery Life
iPad uses a lithium-ion battery. For information about maximizing the lifespan and
battery life of your iPad, go to www.apple.com/batteries/ipad.html.
Replacing the Battery
Rechargeable batteries have a limited number of charge cycles and may
eventually need to be replaced. The iPad battery isn’t user replaceable; it can be
replaced only by an Apple Authorized Service Provider (AASP). AASPs also recycle
iPad batteries according to local laws and regulations. For information, go to
www.apple.com/batteries/replacements.html.
33 Chapter 2 Getting Started