Just a note to prospective 860 owners: If you a going to buy an extra battery, you probably don\'t need the battery with cover. The battery snaps into its socket and then is covered by a bottom plate on the 860. Unless the bottom plate is damaged, you probably don\'t need a second one. I am not really sure why they even sell it that way. The large battery that comes with the 860 fits in the socket, but it is large enough that you can\'t put the small silver battery cover back on. It is held in place and protected by the black plastic bottom plate. I am sure that is clear as mud, but the bottom line is that you don\'t need to pay extra for the cover.