The cost of purchasing a new battery for an electric car can typically range from $5,000 to $15,000, depending on the car model and battery size. As technology advances and production increases, battery prices are decreasing. For example, replacing a Tesla battery can cost between $7,000 and $12,000. Some car companies even have a warranty to replace the battery within a certain number of years or a certain mileage. It's worth remembering that batteries last longer and require fewer replacements, which ultimately reduces the overall cost of owning an electric car. In the future, we can expect advances that will reduce replacement costs and extend battery life.