The new OMD E-M10 uses yes the first time the PEN batteries, therefore these Ansmannakku can also be used for the M10. Works fine, no difference can make the original battery! In M10, the juice goes out pretty fast, so I advise everyone to a second battery. The Ansmann did not disappoint me as such!
Since the price is right: strong buy recommendation for all PEN and OMD E-M10 owners !!!