The E-P1 has no such option. A recent thread showing how to use anti-shock and rubberband+coin has got me itching to do time lapse work. I want to make a time lapse of a whole day and night but the battery will not last. Can just change the battery but then the framing shifts (gotta demount from the tripod) and I don't want that shift. So, hack a DC power adapter .... OK, Einstein, what about the third contact? My multimeter shows two contacts at the same potential so just short then together call it the negative supply and carry on! Er, let's try your camera first ... So maybe I'll ask, why are there three contacts on the battery? What do they do? The charger only has two contacts so what is with that middle oddball? Why is it even there?