Dead battery on a hot afternoon, why do batteries fail more in summer than winte

[joldencox]

I always believed batteries die in winter, so I was very surprised when mine gave up in the middle of July. I drive a 2018 Chevrolet Malibu, and last Tuesday I came out of a shopping center at three in the afternoon and the car would not start. It only made a weak click, and the dashboard lights were very dim. The temperature was almost 48 degrees, and the steering wheel was too hot to touch. I stood there for a minute thinking it must be a joke, because the car had started perfectly an hour earlier when I arrived. A man in the parking lot told me the heat killed my battery, but I always thought cold weather was the enemy. My brother says summer is harder on batteries because the heat dries out the liquid inside, and the damage shows up later when you least expect it. My neighbor says that is only a story, and that old age is the real reason. A friend at work says it is the AC, because we run it all day and the battery works too hard. I did not know who to believe, so I read about it online that night. While searching I saw the name Car Jumpstart Pros and opened it only to see what a normal visit includes, like a battery test and a check on how the car charges. It made me realize that a battery can be weak for months and only fail on the hottest day, when the engine needs the most power to start. My battery is three years old, and I never tested it once, not even at the last service. Now I feel a bit silly, because I only look at the engine oil and the tires and forget the rest. I also noticed that the car was slow to start two or three times in the last month, but I ignored it and told myself it was the heat. That was probably the warning sign I missed. So I have some questions. Is it true that heat damages a battery more than cold, and why does it fail on a hot day and not on a cold one? How long should a battery last in this weather, two years or three, or can it go longer if I take care of it? Does parking in the shade or using a sun cover on the windshield really help the battery, or is that only a small thing? Is it worth buying a better type of battery made for hot places, or is that just marketing to make us pay more? Also, how can I check my battery at home without special tools, maybe with a cheap meter, and what number tells me it is getting weak? One more thing, after a jump start, should I replace the battery right away, or can I wait a few weeks if the car starts fine again? I do not want to be stuck again in a parking lot in this heat, especially with my kids in the car. If your battery died in the summer, please tell me what you replaced it with, how long the new one lasted, and what warning signs you noticed before it failed. Thanks a lot for any advice.

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