I bought 3 TradeShop Sony batteries (NP-FV100 1x and 2x NPBG1) 27 March 2015. 3 Sony batteries purchased from TradeShop had the same problem, the duration was reduced by half compared to what is indicated and compared to my Sony batteries purchased from Sony. I could understand that it happens with a battery but with 3 batteries I started asking me questions. I also noticed that my battery NP-FV 100 was 70g less compared to my original Sony battery (it was also darker). So I contacted Sony to have more information and communicating the numbers on the batteries (which were different from those of my original batteries) Sony has informed me that these 3 batteries were not made by Sony Sony as they are marked !!!!! I leave you to draw your conclusions. I put a bad evaluation TradeShop explaining the problem and the Amazon lined indicating "This item was shipped by Amazon, so we assume no responsibility for the processing of your order. "So that TradeShop always 100% positive feedback !!! I did not think that the policy was to cover Amazon sellers who were selling such items, but rather to protect buyers getting scammed. In conclusion I would advise buyers on Amazon not to buy from TradeShop.