Please follow these steps....
) You can lower the setting of your digital camera
so that the quality of photo is reduced from the typical "standard quality" which comes set on the camera. What you will need to do is go into the options and reduce the quality to "economy" so that the battery expands less energy to take the picture, which will lead to longer batter life.
2) Make sure that you have calibrated your battery before you bring the camera along on your adventure. You can do this by charging your battery fully and then turning on the camera so that it dies. Once this happens you can charge it again and you will find that it will now last a lot longer than it formally did. I have found this to be very useful with all of my digital cameras.
3) In order to get the most out of your battery you should switch the battery in your camera from standard disposable batteries to rechargeable batteries. This is because of the fact that they last 2x as long as expand less to actually take the photo according to the Energizer rechargeable box.
4) You can go into the settings and turn off the flash if you see one when you are taking a picture. This will reduce the amount of energy going out of the camera which means that your battery will not die as fast as it normally would. You will need to select settings and then choose "no" next to the word flash.
5) You can also make your battery last longer by adjusting the settings so that you are not recording audio notes with your pictures. This will drain your battery fast so you should go into your options menu and select audio off. According to my Sanyo instruction booklet this will make your battery last up to an hour longer.