How to Keep Your Car’s Battery Healthy in the Heat

Summer is here, and with it comes hot temperatures that can take a toll on your car’s battery. High heat can cause the chemicals inside your battery to break down faster, leading to a shorter lifespan and decreased performance. In this article, we’ll explore some tips and tricks for keeping your car’s battery healthy during the summer months.

  1. Keep Your Battery Clean

One of the easiest ways to ensure your battery stays healthy is to keep it clean. Dirt and debris can accumulate on the surface of your battery, creating a layer that insulates it from the outside air. This can cause heat to build up inside the battery, leading to faster breakdown of the chemicals inside. To keep your battery clean, use a battery cleaning solution and a wire brush to remove any buildup on the surface of the battery. Be sure to wear gloves and eye protection to avoid coming into contact with any corrosive materials.

  1. Park in the Shade

Parking your car in the shade is one of the most effective ways to keep your battery cool during the summer months. Direct sunlight can cause the temperature inside your car to soar, which can put a strain on your battery. If you don’t have access to a shaded area, try using a car cover to keep the sun off your car.

  1. Check Your Battery’s Water Level

Some car batteries require regular maintenance in the form of checking and adding water. If your battery requires water, it’s important to keep the water level topped off during the summer months. High heat can cause the water inside your battery to evaporate more quickly, leading to low water levels and decreased performance. Check your owner’s manual to see if your battery requires water, and if it does, check the water level regularly and add distilled water as needed.

  1. Test Your Battery

Regularly testing your battery is a good way to catch any potential problems before they become serious. Most auto parts stores offer free battery testing, so stop by your local store to have your battery tested. If your battery is showing signs of wear, consider replacing it before it fails completely. This can save you from being stranded on the side of the road with a dead battery.

  1. Avoid Short Trips

Short trips can be hard on your car’s battery, especially during the summer months. When you start your car, the battery is responsible for providing the initial power needed to get the engine running. If you’re only driving a short distance, your battery may not have enough time to fully recharge before you shut off your car. This can lead to decreased battery life over time. If possible, try to combine your errands into one longer trip to give your battery more time to recharge.

  1. Turn Off Unnecessary Electronics

Your car’s electronics, such as the radio and air conditioner, can put a strain on your battery. If you’re not using these electronics, turn them off to help prolong the life of your battery. This is especially important if you’re parked in direct sunlight, as the heat can cause the electronics to draw more power from your battery.

  1. Use a Battery Tender

If you’re going to be leaving your car parked for an extended period of time, consider using a battery tender to keep your battery charged. A battery tender is a small device that plugs into your car’s battery and provides a small trickle charge to keep it topped off. This can help prevent the battery from losing its charge while your car is parked.


Keeping your car’s battery healthy during the summer months is important to ensure your car starts when you need it to. By following these tips and tricks, you can help prolong the life of your battery and avoid being stranded with a dead battery. Remember to keep your battery clean, park in the shade, check the water level if necessary, test your battery regularly, avoid short trips, turn off unnecessary electronics, and use a battery tender when leaving your car parked for an extended period of time. With these tips in mind, you’ll be well on your way to a healthy battery and a trouble-free summer driving season.

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