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I am using my Nikon D750 to record behavioural trials in the lab. It is a real pain to have to worry about battery level and having charged spares and a charger on hand in addition to all the rest of the organisational issues associated with the experiments.
Additionally, it is a really big problem if the camera shuts down in the middle of the recording.
It would be really great if I could hook it up to the mains via a USB charger or similar, I have, however, not found any microUSB port on it. Does it maybe have its own proprietary charger port which I just don't recognise? Can I hook it up via the battery pack contacts? Or via the accessory terminal?