DP1M and DP2M Paradox

Just my 2p, but I'm not sure how come people are only getting 60 or so shots per battery charge. I consistently get well over 100 images - usually around 140. I have the LCD brightness configured to its lowest and turned off the auto review of the taken photo; this latter step seems to help a fair bit.

If you review pictures on-camera a lot then you'll hit the battery quite hard, but really, looking at the in-camera JPEG on a tiny LCD screen tells you very little about the raw file (assuming you're shooting in raw) that's been captured. I treat it like film shooting really - I don't quite know what I've got until the picture is 'developed' in SPP.