Do batteries last longer in hot climates than in cold ones?
No. Batteries in colder or moderate conditions can last 2 to 3 times longer than those in hot climates or high heat conditions.
In the northern United States, Canada or Northern Europe, the life expectancy of an automotive battery averages between 48 and 54 months. In more Southern Climates like Florida in the USA, the average life expectancy of standard automotive batteries is about 18 to 23 months. This data is based on average usage and very good charge and discharge conditions.
Heat kills batteries! For every 10° increase in temperature above 77°F /25°C, the chemical reaction inside your battery will approximately double, cutting battery life in half. **