Do i need to drain battery before charging?

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To keep the battery life, you should put the iPad to charge at any time under the 10% of battery percentage, but don't let it turn off. Then, charge it until the battery reaches 100%. If you want more information about batteries, see > http://www.apple.com/batteries/ipad.html

No. You do not need to drain the battery before you recharge the iPad. I charge my battery every single night no matter where the battery indicator is.

Read this for more information.

http://www.apple.com/batteries/ipad.html

Optimize your iPad Battery - http://www.apple.com/batteries/ipad.html.

How to Calibrate Your Mac, iPhone, or iPad Battery

http://www.macblend.com/how-to-calibrate-your-mac-iphone-or-ipad-battery/

I agree with Demo. On a normal day my iPad ends up being around 60-70% on the battery at the end of the day. I usually plug it into the charger when I go to bed and unplug it in the morning.

You should charge your iPad when it is completely dead or not your iPad will loose its power more often

You should charge your iPad when it is completely dead or not your iPad will loose its power more often

Ni-Cd and NiMH batteries needed to be run through a full cycle once in awhile to prevent the "memory" effect which could prevent them from taking a full charge. They can also be damaged by over charging which many older devices lacked the ability to switch to a trickle charge to prevent damage.

iOS devices have Lithium polymer batteries which do not have these properties. It is OK to run the battery right down but not necessary. It is OK to charge any modern device with a Lithium polymer or ION battery at anytime you are not using it no matter what state the charge is at. It may be necessary to run it through an occasional full cycle to calibrate the battery meter or if you always have the device plugged into the charger to keep the electrons moving. The charger also has the proper circuits in it to prevent over charging.

Simply put, charge the iPad or any iOS device when you are not using it no matter what level the battery is at so it is fully charged when you need it.