Hi Debbie,

While you can use the iPhone charger for your iPad, you'll find that your iPad 
will charge very slowly.  The iPad draws 10 watts of power while the iPhone or 
iPod Touch will draw 5 watts.  That means that the iPad charger can be used to 
charge an iPhone, iPod Touch, iPad, or even a Nano at its maximum charging 
rate.  On the other hand, while the iPhone charger can charge an iPad, you'll 
find that it will take much longer to reach a full charge.  Here's a link to 
the Apple Knowledge Base article about "iPhone and iPod: Using the iPad 10W USB 
Power Adapter":
http://support.apple.com/kb/HT4327
It states: "The iPad USB Power Adapter is a 10W charger. While designed for use 
with the iPad, you can use the iPad 10W USB Power Adapter to charge all iPhone 
and iPod models by connecting them using a Dock Connector to USB cable."

If I were traveling and only wanted to take one charger to use with both my 
iPhone and my iPad, I would take the charger for my iPad.

This is also the general rule for power adapters for the Apple computers: you 
can use a power adapter that is rated to supply more power than your computer 
requires without problems, but not the other way around.  So you can use the 
power bricks for the MacBook Pro laptops in place of the smaller power bricks 
of the MacBook Air models, but not vice versa if you need a reliable power 
source.

HTH.  Cheers,

Esther
  
On May 1, 2012, at 10:35 PM, Lois Butterfield wrote:

> Hi Debbie,
> 
> Yes, they are.
> 
> Lois
> 
> -----Original Message----- From: Debbie April Yuille
> Sent: Wednesday, May 02, 2012 3:55 AM
> To: [email protected]
> Subject: iPhone and iPad Charging question.
> 
> Hi All
> 
> I have both an iPad and an iPhone and I was wondering are both chargers
> interchangeable.
> 
> Thanks
> Debbie
> 

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