Freezing weather puts stress on a car battery, but it’s the summer heat that can kill it. The heat causes corrosion and evaporates the electrolytes that your battery needs to function. If you live in a place that also experiences very cold winter temperatures, then the damage from the heat might stop your battery from being able to start in the winter months. In any case, the climate where you live has an effect on the battery, which is why it’s important to have it checked as part of a regular preventative maintenance plan.