I also just bought a GX 680 (Mk.1 I think), without battery, there seem a lot around like this now. The guy in german is asking a huge price (more than I paid for teh camera ..) for what is really very simple, and making a battery / power solution is easy enough for anyone reasonably handy I think, (and those who arent shouldnt try maybe .. ;-) ) so I think maybe the most important question is justWhich pin is the positive one ? .. (sorry those of us with no original battery to refer to need that info ;-) It would be really great if one of you that has a battery would be so kind as to pass on that detail. The rest we can fis ourselves ? Many thanks !