Quote Originally Posted by David Lyga View Post
darkosaric: I use 'cold' to safeguard and preserve batteries, and with good results. I have a hundred button batteries in my freezer and that really does keep them fresh. - David Lyga
When I use my F3 on cold winter day (-20 Celsius and lower) - battery goes down in a hour. After it gets warm again - battery is working again. So now when is very cold outside as simplest solution I use full mechanical camera .