To whom it might concern: I googled in search of such a product as made by Dolgin and decided to purchase power plates for my DSLR. I received the product in excellent time from USA to Ireland, the batteries I had intended to use are Sony NP960 I have loads of, but unfortunately I did not specify this on my order. On contacting Dolgin I am delighted to say Alex Dolgin could not have provided a better service, a new pair for the Sony batteries were dispatched immediately indeed, as I sent back the incorrect one I ordered - they crossed in the post. I am so pleased with the product, the service, the cost and the knowledge that it is a well made product; I doubt if I could have made a DIY battery connection which might have damaged my camera for much less than I paid. Highly recommend! Bill Lupton, Ireland