When most motorists think of dead batteries that cause starting failure, they think of severe winter weather, but summer heat is the real culprit. Many battery problems start long before the temperatures drop. Heat, more than cold, shortens battery life.
Colder temperatures increase the thickness of the engine oil, making the engine harder to turn over, causing the battery to have to work more. These factors lead to harder starting.
To get the most life out of a battery, below are simple steps and suggestions:
Be sure the electrical system is charging at the correct rate; overcharging can damage a battery as quickly as undercharging.
- If your battery is the type that needs to be topped off, check it regularly, especially in hot weather. Add distilled water when necessary.
- Always replace a battery with one that’s rated at least as high as the one originally specified.
- Keep the top of the battery clean. Dirt becomes a conductor, which drains battery power. Further, as corrosion accumulates on battery terminals it becomes an insulator, inhibiting current flow.
Driving habits such as frequent engine on/off cycles will cause more wear on the starter than a simple back and forth to work. Other factors include driving and weather conditions, mileage, vehicle age and excessive electrical draws like in-vehicle entertainment systems. Check the battery if you notice headlights and interior lights dim, accessories that fail to operate, or the “check engine” and/or battery light illuminated.