How Many Batteries Are In An Electric Car – It is the most important – and expensive – part of the car. Fortunately, it should go a long way.
In many ways an electric car is mechanically simpler than a conventional car. There are fewer moving parts in an electric motor than a gasoline engine, an electric car only uses a single speed transmission, and EVs have more than a dozen, common auto parts that will eventually fail and need to be replaced.
How Many Batteries Are In An Electric Car
But one area of concern that often comes up in consumer reviews is electric car battery life. In a recent study by Cox Automotive, 46 percent of those considering an electric car fear that the battery will last 65,000 miles or less. Of course, replacing the battery in an electric vehicle is an expensive proposition. For example, a new Chevrolet Bolt EV battery is said to run well over $15,000, and that doesn’t include labor costs.
The Clock Is Ticking On Electric Car Batteries
However, while an electric car battery will eventually lose its capacity to hold a full charge, rest assured that it will not fail completely, but will lose its capacity gradually over time. That said, we haven’t seen any reports of old battery cars heading to the landfill because their power cells are dead. Nissan reports that few Leaf EV batteries have had to be replaced, despite thousands of units sold over the past eight years of production.
Lithium-ion batteries used in electric vehicles are similar to those used in cell phones and laptops, but larger. They are very different from the heavy lead-acid batteries used in conventional cars and have a higher energy density than nickel-metal hydride rechargeable batteries. They are also less likely than other types of batteries to lose their charge when not in use. An EV battery usually consists of a series of connected cells, perhaps several hundred depending on the model, rather than one large unit.
The capacity of an electric car battery is expressed in kilowatt-hours, abbreviated kWh. It’s much better here. Choosing an EV with a high kWh rating is like buying a car with a large gas tank that will allow you to drive many miles before you need to “fill up.” With that, remember that the electric car’s control system protects the battery from being 100 percent fully charged or 100 percent discharged to maintain its performance and extend its useful life.
The Environmental Protection Agency rates electric cars according to their energy efficiency and estimates the average performance of each model on a full charge. But, as they say, your mileage may vary. If you have an electric car and find that it is nowhere near the rated range, it does not mean that the car battery is dead.
Electric Vehicle Battery
For starters, sustained high-speed driving tends to use more battery power than stop-and-go city driving. That’s counterintuitive to a lot of people because it’s the opposite of how a gas-powered car works, using less fuel at highway speeds than in traffic. In addition, it takes more energy to drive a vehicle full of passengers and cargo than it does with just the driver.
Importantly, extreme temperatures, especially extreme cold, can impair the battery’s performance and ability to receive a charge. Running a heater or air conditioner drains battery power at a greater than average clip. A study by AAA found that when the ambient temperature drops to or below 20°F and the car’s heater is in use, the average performance of an electric car drops by 41 percent. If the mercury reaches 95°F and the air conditioner is on, the homeowner can expect the range to drop by an average of 17 percent.
Although some electric car buyers take extended warranties to avoid any fear of over-discharging the battery, this is not necessary. In this case, the batteries in all electric cars sold in the United States are covered under a warranty of at least 8 years or 100,000 kilometers. Kia covers the battery packs of its electric cars for 10 years / 100,000 miles, while Hyundai goes further by extending it to lifetime coverage.
Note, however, that some car manufacturers only close the battery against a complete loss of ability to hold a charge, which is very rare. Others, including BMW, Chevrolet, Nissan, Tesla (Model 3) and Volkswagen will replace the package if it drops to a certain percentage of capacity while under warranty, usually 60-70 percent .
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But how long does an electric car lose its ability to hold a full charge? As mentioned above, while an electric vehicle battery tends to discharge slowly with each charge and discharge cycle, it is a slow process. For example, according to data compiled by the Plug organization in America, the battery in the Tesla Model S loses only five percent of its original capacity in the first 50,000 kilometers, and the reduction rate actually decreases from there. . In a recent Tesla discussion thread on Reddit, several Model S owners reported losing a few percentage points of the car’s original battery capacity after years of use. .
Unfortunately, electric cars stored in extremely hot environments can be expected to lose battery power faster than those stored in cooler environments. Extreme heat is the enemy of lithium-ion chemistry, which is why most electric vehicles have liquid cooling packages. Also, older electric cars with short operating ranges can get sick quickly. That’s because draining a lot of water or a full battery charge regularly tends to drain its capacity quickly over time. That’s less of a problem for today’s high-end models, which are often run at a fraction of their usable capacity each day and only “up” at night.
Excessive use of public Level 3 DC stations (they can bring an EV up to 80 percent of its capacity within 30 minutes) can damage the battery’s long-term performance. That’s because the faster an electric car charges, the hotter it gets and, again, unfriendly to the battery. However, a study by the Idaho National Laboratory concluded that the effect was not specifically explained. INL tested two pairs of identical 2012 Nissan Leaf models, one set using 240-volt Level 2 home charging and the other relying exclusively on DC Fast Charging. community center. After each was driven for 50,000 kilometers, the difference between Level 2 and Level 3 reduction in vehicle battery capacity was only four percent.
The point here is that if properly maintained, an electric car battery should last more than 100,000 kilometers before it scales.
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It is estimated that the life of an average EV battery is about 200,000 kilometers, about 17 years of use if driven 12,000 kilometers per year.
Looking ahead, Tesla says it is working on technology that will allow its electric cars to last up to a million miles, perhaps longer than any other vehicle. Now that’s the car of life.
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