The quickest way (and really the only 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 (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). 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.
Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.
How to Calibrate Your Mac, iPhone, or iPad Battery
At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html
Also, if you have a 3rd generation iPad, look at
Apple: iPad Battery Nothing to Get Charged Up About
Apple Explains New iPad's Continued Charging Beyond 100% Battery Level
New iPad Takes Much Longer to Charge Than iPad 2
Apple Batteries - iPad http://www.apple.com/batteries/ipad.html
Extend iPad Battery Life (Look at pjl123 comment)
New iPad Slow to Recharge, Barely Charges During Use
Tips About Charging for New iPad 3
Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
Thanks for your post. the issue i am asking about is one where after i plug the 10w adapter from the wall to the ipad, the battery indicator does not change, no indication of any charging activity at all. i have changed 10w units with existing cable, changed cables, changed wall outlets, and still nothing on the ipad. Any suggestions?
I am having the same problem. I have tried two different 10W cables as well as multiple usb cables and multiple outlets. The charging icon in the upper right hand corner (of the iPad) does not show status as charging. Also, I noticed that the iPad does not automatically activate iTunes when attached by the USB cable to my iMac and that when you click on the summary page under iPad (in iTunes) I see the following note under "Version": "Connect this iPad using a USB cable in order to update or restore its software". Could this be a problem with updating to the lastest vertsion of IOS?
i do recall updating my software on my iPad2 just before I experienced this issue. my device was still under warranty so I made an appointment at a nearby Apple Store for it to be looked at. They did not offer any cause for the not charging issue and replaced the iPad2 with a new one. The replacement is now also on 5.1.1 and charges when connected normally. i honestly do not know of any other method of repairing this issue. good luck resolving, I would be interested in how you resolve it.
If you've replicated the issue with multiple chargers, outlets and cables, thus proving that it's not an issue with any one of those components, then it's possible the 30pin USB port on your iPad has gone bad. It happened to mine. It would register as 'not charging' even when plugged into multiple outlets. I bought another power brick and it wouldn't charge with that and it wouldn't sync.
Take your devices into your local apple store and have them look at it. Be prepared for them to go through all the troubleshooting because they have to eliminate all the quick adn cheap fixes (cables and chargers). If they can confirm that it's the 30pin port, barring any signs of 'abuse and neglect' your devices should be replaced under the manufacturer's warranty.
I have had the problem with multiple iPads. The cables are fragile and easily broken. The 30 pin connector can become damaged. The charger block can fail. I have had all 3 happen to me. The problem becomes especially difficult to solve if you do not label the cables and the power bricks. If 1 or more fail or become damaged or get mixed up, you will have a difficult time determining if the charger or the cable or both are bad. The 3rd party cables look like the Apple cable, but may have different manufacturers.
If you cannot resolve what is wrong, take the iPad, the cable, & the charger to the Apple Store for resolution and replacement. My wife and I both have iPad 3's and I have labeled the cables on each so I will know which ones go with what iPad. It really does not matter if they are working, but if you start swapping the units around trying to figure out what is bad, they will become mixed up and it won't be long before you will be mixed up as well. Intermix an iPhone or two with the problem and it gets even worse.
Label with a Dymo or Brother tapewriter and you will save yourself a potential problem down the road.
Take it to an Apple Store where they have enough spare parts that they know work correctly and it will be easy. You can call Apple Support and they can send you the needed parts if you know what you really need. If not, ask the to replace the brick and the cable. Maybe if they change the charging cable in the future, they will not be so fragile.
I have the same problem with my iPad 2. It will not charge with either the 10w charger or with any other charger or cable.
Nor is it recognised by iTunes either.
I found that if you do a 'restore' by shutting down and re-starting while holding down the 'Home' key you can get iTunes to recognise the iPad. (It eventually tells you that you need to restore your iPad by connecting to iTunes).
It will then charge via the computers USB or via the wall socket 10w charger.
Of course, the big problem with this is that when it next needs charging the same thing occurs.
Because of the experience described above, I do not think that the cable(s) or 10w charger are an issue as both work after the restore.
Neither can the iPad charging port be an issue as, like the charger leads, it works after restore.
I would love to hear from others who have experienced this problem and if the solution, temporary as it is, worked for you.
Even more than that, I would love to hear about a possible permanent solution.