Car Battery Repair

Interstate Battery

Battery Recycling

Hybrid Battery


When does a car battery need to be replaced?

The main function of a car battery is to start your car. Today, most cars have a single maintenance-free 12-volt acid battery. A car battery is rechargeable. It uses its charge to power the vehicle systems while it's parked and to turn over the engine when you want to start it. Once you start the car, the alternator generates additional electric power to recharge the battery.

Over time, a battery loses its capacity or ability to hold charge. One day, a weak battery will not be able to start your car. Often, this happens when the weather gets cold. When the battery is too weak to turn over the engine, the car will need to be boosted to start, read more below. To avoid this situation, a battery should be replaced before its capacity drops to the critical level. 

On average, a car battery lasts from 5 to 7 years. The battery lasts longer if the vehicle is driven daily and the battery is kept fully charged. When the vehicle is parked for extended periods of time, the battery deteriorates sooner. We have seen the battery lasts up to 10 years.

How can you tell that the battery capacity is getting low? Are there any signs that a car battery is failing? Yes. When the battery is weak, you might notice that the engine turns over slower than usual and the dash lights flicker or dim when you are starting your car. This happens even if the battery is fully charged after driving.

Another sign is when you operate your power windows after the engine is turned off, the windows move much slower than when the engine is running. Sometimes you also may notice that the lights dim when the engine is idling, but become brighter again when the engine is revved. The excessive corrosion at the battery terminals and cables also suggests that the battery is getting weaker.