Another thing I found is that two of my fully charged batteries delivered in total some 600 pictures may be due to a long time life span. I shot 600 pictures within a week not in a day. When I'm busy at school 600 shots will even take me 2 months to do - I guess that may be the reason why I get poor battery life.


Say, to the extreme, I just hold the shutter to let the camera do 6.3FPS on two fully charged batteries continuously until they run out, I can imagine to get close to or even surpass the rated life since all power will contribute to making pictures and nothing is wasted. I have not done it yet because I don't want to make such a judgement by using up 2000 shutter counts. But anyway, I'll pay attention to that.


Thanks for the inputs guys!