I talked to them today. You should give them a call. There is a specific thumb drive that takes less power to run, Sandisk I belive and there is a way to hook it up to a 6 volt lantern battery to increase the life. I was told it will run a 16 gig and possible a 32 gig thumb drive.
It's sitting at a buddy's house for a few days to see what's happening in his food plots.