My OMD is only getting about 2-3 hours of life and maybe 250-275 shots. I don't want the grip. I won't mind quite so much once I get my new batteries, but this seems so short to me! I use it 2 1/2 hours then it sits on the charger for 3+. Seems like such a waste. Sure I'm comparing it to my 60D which I wouldn't only charge maybe once a month and took less then two hours to charge, but this seems so bad to me. Doing a day long activity it'll be a pain (but do-able) to change the battery two or three times, but personally I think I shouldn't have to. It should last all day, or at least only one change. In winter I take star trails photos, sometimes ranging 1-3 hours. I do NOT have time to take the camera off the tripod, unscrew the plate, take the battery out, put a new one in then get it all set up again. When shooting these photos I don't even have a couple of seconds to spare between shots to keep the trails without spaces. I don't do these all the time, but I'd really like to try to do them with the OMD. Any suggestions?