Another thing that could be killing your battery is if you turned off the automatic shut off option. You can have it shut off at 1 minute or 30 minutes. What that does is essentially put your camera in sleep mode. Once you press your shutter half way down, it will come back on. I accidentally turned that off one day and didn't realize it. My batteries would die like crazy and then I realized the camera was actually staying on all day. instead of going to sleep. Hope that helped!