I read some threads about keeping batteries warm (in a pocket) while flying in the cold. Curious if the battery is too cold to create the power needed for lift would there possibly be any vibration if its too cold? I've had lots of flights with my P3P and flew it last night in 14 degree temps and as I got to the end of the first battery I noticed some vibration, visible to the eye, in the camera/gimble. I'm wondering if that could have to do with the battery strength of not. I switched to a fresh battery from my pocket and the vibration was noticeably reduced but still kinda there. I did some long exposure shots and most were out of focus. Wondering if that was just as steady as it could be or if that extra vibration could have played a part. The Phantom has been in two crashes, but have had multiple flights since and have never experienced any vibration before.