How can I make my first generation iPad's battery last longer?
If you don't need to connect to a network turn off WiFi.  You will also want to go into the Settings:


turn down the brightness (Brightness &amp; Wallpaper)
turn off Bluetooth (General)
turn off "Push" and set mail to fetch manually (Mail, Contact, Calendars) / (Fetch New Data)
turn off sounds (General)
turn off location services (General)
Turn off Notifications
and check any apps to see if any poll wifi (if you keep it on)


For additional help, I wrote up an article here with pictures:
http://www.squidoo.com/prolong-iphone-ipad-ipod-touch-battery

In the end, it really depends on how you use your iPad.  Good luck!--