For some reason I have yet to fathom, my camera has failed to take any photos for the past two nights. In fact, 3 nights ago is suddenly stopped recording at 1am or thereabouts. Normally it happily records videos from about 10pm, when the first hedgehogs turn up, right through beyond dawn. I think my record is 17 videos in one night, from only a few days ago.
I changed the batteries the night before last to a new set of rechargeables that I hadn't used before and I wondered if they were too low-powered to be able to operate correctly, so I charged the set that I've been using for the past 3 weeks or so and they were in the camera last night. It seems not to be the batteries that are at fault.
I looked around the internet for troubleshootin help for Browning cameras and came across some USAnian who was complaining about the battery drawers getting stuck and lumps breaking off them. I can see how this might well be an issue - the battery drawer is quite difficult to extract, but I don't think it's that.