What AA or AAA battery should I use for industrial applications? I recently got a set of warning lights for car adventures. Like a chemical flare light but the

What AA or AAA battery should I use for industrial applications? I recently got a set of warning lights for car adventures. Like a chemical flare light but these LEDs run on batteries. It was probably a stupid idea. Deleted paragraphs here about the risk/reward balance of attempting field repairs by the side of the road. However, it did get me thinking about the longevity and safety of AA and AAA batteries in a device that needs to be kept in the car. We get freezing winters, and direct sunlight in the summer will strike you down. (American Southwest mountain state.) What's the best battery for a digital tire gauge that I keep in the glove compartment? Should I keep it in the trunk instead? The worst of the summer heat is made worse by the greenhouse effect of the car's interior. Yes, I should use an analog pressure gauge that works without batteries. I also carry one of these. The digital one is easier to use and generally gets the same readings as some more expensive, less portable test equipment.