How long will an EV battery last?

Certain concerns have to be addressed when buying an electric vehicle. One of these concerns, which we're sure you've had during your EV purchase research, is how long the battery installed in your vehicle or installed EV charger will last.

Battery Capacity and Lifetime

Considering that UPS batteries typically need to be replaced every 3-5 years, around the same time your phone's battery starts to show its age, it is understandable to be wary of EVs because they run on batteries too! Unlike phones, a car is a much longer-term purchase, and 3-5 years for an EV's main power source should certainly not be acceptable. In that regard, you will be pleased to find out that EV batteries last about 10-20 years, and here's why: The capacity of a battery is often a technical term that is difficult to understand in its raw form, so you will often find the capacity illustrated in terms of miles. The unit of measurement used for batteries here is Kilowatt-hours (kWh), which represents the energy used within an hour. If you've ever used 60-Watt bulbs and are wondering how many units they consume on your electricity bill, 60-Watts comes to 0.06 kWh. The higher the kWh rating on your EV's battery, the more range you can expect to get from it. 

*The range may vary according to the number and type of motors in your EV and any additional battery-powered features.

How long will my EV's battery last?

The battery life your manufacturer will provide you a warranty for will be anywhere between 5-8 years. Nissan and Tesla offer 8-year warranties on their EV batteries, which come out to roughly 100,000 miles of use before replacement, give or take. However, this does not mean that your battery will stop working after the warranty period and will need replacement. According to expert estimates, the actual life you can expect should be at least ten years.

One of the primary reasons this lifetime will vary from user to user is how the battery is used and charged. Batteries inherently have 'charge cycles,' which define the number of times they can be charged before they begin losing their capacity. You will have noticed this in your phone, which no longer lasts as long as it did a few years prior when it was new. Charge cycle depletion is a significant issue for batteries, and though manufacturers typically let it be in phones, this would not be an acceptable lifetime duration for an EV. Accordingly, the battery in your EV is designed to be charged in 'buffers.' This means that you will not be able to charge and use the entirety of the battery at one time; it will be unlocked and released in buffers over time. This means the battery does not go through as many charge cycles, thus increasing the lifetime you get from it.

Besides buffering, EVs come with a lot of clever technology to increase the duration of your battery life as well as the lifetime capacity. However, one of the most effective methods for increasing this lifetime is to charge and discharge the battery most effectively. According to manufacturers, you should always only charge batteries up to 80% at a time and use them until they reach the 20%-mark, rinse and repeat. This minimizes the number of cycles your battery goes through with every charge, with charging to 80% using only 0.02 of a charge cycle (on a phone) and a 100% charge using more than one whole cycle. 

Manufacturers also include additional spare batteries with EVs that remain unused for a period of time and only kick in when the initial batteries start to lose their capacity (below 80%). This means you get consistent battery performance for a longer duration and can have worry-free use for years and years.

How EV chargers affect the battery lifetime

The general wisdom is that the faster the charger for a battery, the lower its lifetime will be due to high charge-wear. However, that is not the case for EV batteries! With a high-quality EV charging station or charger from BESEN, you can get lightning-fast charging speed while still easily getting more than a decade of use out of your EV battery. BESEN's level 2 chargers are unmatched in terms of affordability and the technology packed into them, featuring:

1: Repairing capacitor faulty

2: A lot of potential for expansion (RFID, App, WiFi, and more)

Battery tech and how it extends battery life

Lithium-ion is the most common type of battery found in anything electronic. You'll find this same tech in your EV but in a slightly different format. EVs have battery packs, which have hundreds and thousands of 'cells' that combine to create one power source. The reason for using Li-ion batteries everywhere is owed to Lithium's inherently lightweight and the fact that it is safer than most other alternatives on the market. 

Moreover, compared to lead and nickel-based batteries, Li-ion batteries offer much more charging capacity within the same volume, making them ideal for use where space constraints are a factor (and they certainly are in EVs).

Having driven an EV or sat in one, you may have noticed how the car slows down a lot faster than you would expect when the foot is off the accelerator and the brakes as well. This is because, along with friction, the wheels are being slowed by generators in the electric motors. Essentially, when your foot comes off the accelerator, the generators kick in and start harvesting the energy from the wheels to recharge the battery, which leads to the car slowing down as if under braking but not requiring any brake input whatsoever. Apart from significantly reducing long-term brake wear, this process is crucial in extending your EV's battery life. Compared to a combustion-based car, this energy would be lost and wasted, while in an EV, it is harvested and reused for maximum efficiency. This harvesting also takes place in greater strength when you hit the brakes in an EV.

Combined with modern battery tech and the best practices mentioned in this article, we’re certain that you will be able to get a long, long time of use out of your EV's battery pack. We hope this has been informational. Make sure to check out BESEN, the leading EV chargers manufacturer for all things EV, and more! Featuring products ranging from EV chargers to cables, connectors, and adapters, they have everything you could need for your Electric Vehicle.

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