AAA is warning drivers about how heat can impact vehicle batteries ahead of a hot Fourth of July weekend.

Officials with AAA East Central say that with a nearly record-breaking 47.7 million Americans preparing to travel this weekend, maintenance will be necessary for many to prevent roadside breakdowns.

"Hot sun breaks down the internal components of a battery, and a lot of people may end up stranded at the roadside this weekend," said Mike Hoshaw, vice president of automotive services, AAA East Central. "Moreover, people letting their cars sit idle during the pandemic presents additional challenges that thousands of batteries won't be able to withstand."

AAA reports a sizable increase in drivers needing help for dead batteries when temperatures climb above 90 degrees for a few consecutive days. They say summer heat speeds up the rate of fluid loss and resulting oxidation of battery components, putting older batteries in danger of failing.

AAA is advising drivers to do the following to help prevent problems:
-Consider having your battery and charging systems tested. Having a battery tested can expose any weaknesses that may break down under extreme circumstances.
-Make sure the battery cables are clean and tight. Dirty, loose connections to battery terminals limit the flow of current and are a common cause of issues. Consider cleaning corrosion off of a battery terminal by using a small wire brush and cleaning it with a mix of one tablespoon of baking soda and a cup of water.
-Make sure to drive. For vehicle owners who don't drive often or far, a vehicle should be taken out for a long drive once every week or two. Shorter drives can drain a battery over time, given that it doesn't have time to recharge properly.