Ok so it arrived today, first things first, what's it got written on it = li-on battery, for Sony NP-FW50, 7.4V, 1500maH. Hang on! My oem battery says 7.2V, 1020maH....
Oh well let's bang it in the charger and see.. It fits (good start), Amber light (good good), 3hrs 50 minutes later the light goes out (excellent), hmm ok so I try it in the camera (after all what difference can .2volt make, right??)... Momentarily flash of the light next to the battery cover and....
....A funny smell, then smoke, noooooooooo, just kidding

camera switches on, battery symbol, with percentage showing etc, so all is fantasic (Sony can stick their £76 battery!)
Ps. Luv you Sony