The battery percentage on my iPad won't go up?

The charger may have failed. Take it to the Apple Store for evaluation.

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

http://www.macblend.com/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

http://allthingsd.com/20120327/apple-ipad-battery-nothing-to-get-charged-up-abou t/

Apple Explains New iPad's Continued Charging Beyond 100% Battery Level

http://www.macrumors.com/2012/03/27/apple-explains-new-ipads-continued-charging- beyond-100-battery-level/

New iPad Takes Much Longer to Charge Than iPad 2

http://www.iphonehacks.com/2012/03/new-ipad-takes-much-longer-to-charge-than-ipa d-2.html

Apple Batteries - iPadhttp://www.apple.com/batteries/ipad.html

Extend iPad Battery Life (Look at pjl123 comment)

https://discussions.apple.com/thread/3921324?tstart=30

New iPad Slow to Recharge, Barely Charges During Use

http://www.pcworld.com/article/252326/new_ipad_slow_to_recharge_barely_charges_d uring_use.html

Tips About Charging for New iPad 3

http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html

Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips

http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad

In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.

 Cheers, Tom 😉

We had the same issue.

First install or update ITunes on to your home computer. Second, attach your IPad via USB to the PC with the latest version of ITunes installed. Third, hold in the IPad Power and Home buttons at the same time until it recycles twice. You should get a screen showing an USB plug going in to ITunes. Fourth, open ITunes, it should detect your device and hopefully let you know there is a Critical Update for your device. Fifth, follow all defaults to initiate update.

I first found pre-boot to ITunes while trying several different methods of resolving the power issue. I was actually first able to charge the IPad by following the ITunes boot process stated above several times. When in ITunes pre-boot it takes a few more minutes longer to fail before powering up. I feel the issue is that the power when down to 2 percent on an old battery isn't enough to survive power usage involved with startup even when attached to a good power source. This causes a continues cycle were as the IPad dies charges to 2 percent, reboots and dies again not allowing for a charge to start. The only regret I have is that I followed previous suggestions and reset my device loosing many photos not yet uploaded to the cloud. I wish the APad would remain turned off when powered off, this would have resolved the issue much quicker.

Such a blasted headache, it amazing how far one will go to avoid paying for repair services. Charges I am sure would have resulted in a battery replacement or even something more costly.