Do anyone know how to automatically convert a bunch of NIF models to OBJ using for example a batch converter or a program?
Is it possible to export multiple models at once in Nifskope?
I think, its not possible.
Try using Noesis! I believe it may have a batch converter on there. That and its a bit easier than Nifskope as you can drag and paste things onto models such as textures and mapping to see if the ripping messed any UV mapping up.