Apple posted a new document on its website about iPad battery replacement, where it is said:

"If your iPad requires service due to the battery’s diminished ability to hold an electrical charge, Apple will replace your iPad for a service fee."

Apple also added that your data will not be moved to a new iPad, so you'll need to sync your device to iTunes to backup all the personal information it contains.

The battery replacement will cost you 99$ (and 6.95$ for shipment). Apple claims the process will take one week from sending the iPad to receiving replacement device. You can replace your battery in local Apple Store ^[1] or at the office of Apple Authorized Service Provider ^[2]. To get further information contact Apple Technical Support ^[3].