Many people have been led to believe that cold winters are the culprit in the demise of car batteries, but it is actually not the biggest cause of battery failure. According to a recent study by the Sacramento Bee, high summer temperatures can cause more stress on an auto battery than colder temperatures.
"Extreme heat causes battery fluid to evaporate, which then damages the internal structure of the battery, causing it to fail," said Joe Finney, senior vice president and president of Sears Automotive Group. "Many car batteries go on life support in the summer and actually die in the winter months," Williams said. The average life of a battery in the northern U.S. is five years, whereas a battery in the southern U.S. may only last two years."
Temperatures are at their annual highs and temperatures under a vehicle's hood can reach 175 to 200 degrees, but there are still ways to maintain battery health.
Individuals can check on their own if water is at the right level in the battery, if not, add distilled water until plates are at least half covered. It is important drivers have their batteries tested every three to six months and more often during the hot summer months.