As the weather warms up, your car’s battery can face a whole new set of challenges. While winter gets the blame for most battery problems, heat can be just as hard on your battery, if not more. High temperatures speed up chemical reactions inside the battery, which can lead to corrosion, water loss, and shorter battery life. That’s why it’s a smart move to give your battery some attention before summer hits full swing.
Check the Battery Terminals and Cables
One of the easiest things to do is inspect your battery terminals for corrosion or buildup. Corrosion looks like a white, ashy substance around the metal connectors and can block the flow of electricity.
Make sure the battery cables are tight and secure, and if you spot any corrosion, gently clean it off with a mix of baking soda and water. Just be sure the car is turned off before you touch anything under the hood.
Test the Battery’s Charge
Even if your car starts just fine, your battery could still be losing strength. A quick test with a multimeter can tell you if the voltage is in the right range. Most healthy batteries should read around 12.6 volts when the engine is off.
If you don’t have a tester or aren’t sure how to check it, a repair shop can test the battery for you, usually in just a few minutes. This can help catch a weak battery before it leaves you stranded.
Inspect the Battery Case
Take a look at the outside of the battery. If it looks swollen or cracked, that’s a red flag. Heat can cause the case to warp or even leak, which means it’s time to replace the battery right away.
Also, keep an eye out for any leaking fluid or strange smells—those are signs the battery is failing and could be dangerous if ignored.
Keep the Battery Clean and Dry
Dust, dirt, and moisture can drain your battery by creating a path for electricity to escape. Wipe down the battery occasionally to keep it clean, and make sure it’s sitting in a dry, well-ventilated area under the hood.
If your vehicle is parked outside a lot, consider using a battery cover to help shield it from extreme temperatures.
Limit Short Trips
Lots of short drives without much time in between can stop your battery from getting a full charge. Try to combine errands when you can, or take a longer drive every now and then to help the battery recharge fully.
Know When It’s Time to Replace It
Most car batteries last about three to five years. If yours is creeping up on that age or you’ve noticed sluggish starts lately, it might be time to think about a new one—especially before the summer heat puts it to the test.
Final Thoughts
Taking care of your car’s battery before the heat sets in can save you from frustrating breakdowns and costly repairs. Simple checks like cleaning the terminals, testing the charge, and keeping the case in good shape go a long way. If you’re not sure how your battery’s doing, have it tested by a professional to make sure it’s ready to handle the warmer months ahead.