If you're not browsing the net, turn off your wifi and screen rotation amd turn on power saver mode. That should make it last way longer. If you are browsing and such, make sure no other program is open (check task manager) and still keep the screen rotation off and power saver mode on.
see how many of the apps were left on, anything that the tablet will search for will draw on the battery life, like bluetooth. i had one for a month and returned it, because it was too slow. i got a kindle instead and like it much better. nothing like an ipad though i have both