I was asked to review this battery twin pack for the Nikon Cookpix 4300. The twin pack was extremely well priced, arrived quickly and charged in a couple hours. As far as I know, they are fine. However, I did think they were original batteries for the Nikon Coolpix, i.e. the discription, however, the actual battery only says it fits the Nikon so I presume it to be a knock-off. Time will tell if they are a good purchase, or not.