On a recent overnight trip, I attempted to take some video in the morning at 34 degrees--my camera said battery was dead. I put the camera in a pocket inside my jacket and was able to take a 45 second clip about 20 minutes later. When the battery was back at room temperature after my trip, as a test, I started recording--and the camera battery was still going strong after 3 minutes.
What do you do to retain your battery life in cold weather, if anything? Anyone know why batteries come back to life after being cold? What temps are too cold for batteries? Will they keep coming back night after night?
Sorry for all the questions, just want to know what other have learned. Thanks!