What car flashlights and associated batteries do you use?
One of the areas that I am concerned with is emergency flashlights stored in our cars. I leave these flashlights in the glove compartment for long periods of time without thinking about them. Too often, when you go to use them in some type of an emergency, the flashlights are dead. The batteries are either discharged or leaked. The extreme heat and cold are very rough on the batteries.
I have been using Lithium Ion rechargeable batteries (18650) and pulling them out every 2 months to recharge. I live in Southern California, so cold is not that much of an issue.
My question is what is the best batteries to use in these extreme conditions. What do you guys use?