I have a Sony A390 digital SLR camera which came with a NP-FH50 6.8v battery and the camera has 6.8v printed on its label on the bottom, I want an extra battery but most of the NP-FH50 batteries I see for sale are 7.4v, are these safe to use being a higher voltage, I did find a 6.8v version for some ridiculous price, so will I have to get that one
Thanks
Thanks