J have not the courage to let the camera shoot in the empty recording to test autonomy, but it seems pretty decent for the price, plus it are 2 batteries and I have the original battery so I think I ca n sufficient to cover any type of event.
Remains to be seen how much autonomy is complete record ... As against the% Autonomy down fast enough, but with the nv70 battery sony c is the same, so I do not really know that. J buy a real FV100 in the future and I will do a real comparison, we'll see, but meanwhile they seem to agree and allow me to work, and then, given the low price fraaaaaanchement, I will not complain;)