I did some searching, but there doesn't appear to be a dedicated thread that lists/discusses the qualities of third party battery options for various cameras. So perhaps we could accumulate a knowledge base to make it easier to find what works and what does not. I recently purchased a set of batteries and chargers from here: http://www.ebay.com.au/itm/140942447831?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649. They don't really have a name and they seem to be a dime a dozen on eBay, with minor variations. It's certainly cheap, comes with a car charger, can charge Olympus batteries and comes with two batteries. The kit most certainly works and the camera appears to work without any issues. I haven't yet been able to determine whether they have the same duration as the Olympus battery, but they appear to last only about half the time, but only through a very subjective observation. Hopefully this coming weekend I'll be able to find out how they actually compare to the Olympus battery and will provide feedback.