Apple claims 10+ hours of battery life. There is also battery lifespan to manage so that your iPad will still hold a charge. In order to manage the power it is advisable to update the new version iPad OS. The most obvious suggestion would be to turn off the Wifi when not in use.
Also, if you are not using the cellular network, then you should switch-off the 3G network. Turn location services on only when a particular app wants to use it, otherwise leave it off. Push notifications can eat the battery too. So, turn those off too to prolong the runtimes