A few weeks ago, I bought a used E-PM2 from one of the forum members. Yesterday, I have noticed that the battery that came with the camera has a date of 2011-03-11. The battery (BLS-5) looks to be in great shape but I am wondering how a camera released in September 2012 could have come with a battery from March 2011. Can someone with an E-PM2 please check the date on their battery? Just curious if the batteries got mixed up by the seller or not.