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The average car battery life can be anywhere from three to five years, but the exact time any given battery needs to be changed depends on a number of factors. Most cars on the road today have 12-volt lead-acid batteries under the hood.

In general terms, however, you should be able to receive a minimum of $0.30 per pound for your scrap battery. The prices of a scrap battery are dependent on what the lead recycling prices happen to be at the time.

After three years, it's normally time to install a replacement. After four or five years, most car batteries will be almost completely unreliable. Old car batteries can present a number of safety and reliability issues. Luckily, it's easy to identify if your car's battery is nearing the end of its lifespan.

Some of the best electric cars boast a highway mileage of 60 to 120 miles on a single charge. There are models that can run for more than 140 miles on a single charge.

When the battery supplies electricity, exactly the opposite happens: the extra lead dissolves off the plates in a reaction that produces an electric current . The batteries charged by an alternator on modern cars, or by a dynamo on earlier ones. Both are types of generator , and are driven by a belt from the engine.

Under these conditions, you can probably expect your car battery life to be about six years. on average, a car battery lasts between two and five years. if you live in the northern united states, your car battery lifespan will be longer, because you're in a cold climate.