I purchased two "100% brand new high quality Canon BP-511A Li-Ion Battery Pack(s)" from here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180462762500&ssPageName=STRK:MEWAX:IT The photo below shows the front and back of the two packages. Both packages had different instruction sheets shown. I have shown on the left and centre two OEM Canon batteries. The battery on the right is from the eBay auction site. The left battery cover belongs to one of the OEM batteries. The right battery cover without the battery cutout belongs to the battery from the auction site. I am waiting for the seller to explain the differences in the battery shown in the photos on the auction site and the one I received. I will post two close up photos below this post. Please tell me if the eBay battery is counterfeit.