How is the battery itself, I do not know yet - must indeed be a few times charged and discharged only. Use The first time he was in any case "at the back" suddenly empty - wait and see whether the are. But the fact is that one of the two batteries went in a little hard in the photo (reprints had some). What I have not considered: normally the battery itself from jumping out of the photo out when you press the release button. That was no longer the case - the (empty) Battery remained in photo stuck !! Had the battery with a knife "out operate" ... and the problem is not by itself. I suspect that the problem might only by the sticker located on the battery - possibly is the non-glued clean, but that can not be seen at first glance. What do I do now with the battery ??