You might already know which type of charging is suitable for your EV, but it is also important to understand how much charging is suitable for it. EV charging speed refers to how quickly an EV charges, and it is usually measured in kWs. The higher the charging power, the faster the vehicle charges.
Ultimately, the charging speed and overall performance depend on the EV’s battery capacity and charging system. Sometimes charging speed can vary because EVs may provide different maximum speeds when charging at home with AC supply, while other times, they may be charged using a DC fast charger outside. Even when using a high-power charger, the vehicle may not accept its maximum charging rate. There are many factors that can affect the EV's charging speed, including battery, temperature, state of charge, charging capacity, and type.
Therefore, it is important to understand not only which type of charger is compatible with your EV but also the amount of charging power it can safely and efficiently accept.
1. Charger Type and Power Output
The biggest factor is the charger itself. When you look at a charger, the power rating is the most power it can give, but it's not a promise of how fast it will charge. Chargers can be grouped into three main categories:
The simplest and slowest way to charge is Level 1, which uses about 2.7 to 3.7kW of power. This will take a long time, about 10-12 hours to fully charge your EV. It is not the fastest option.
When it comes to charging electric vehicles, a Level 2 charger is a great choice- its usual power output is about 3.3 to 19.5 kW. This type of charger is great for homes, offices, and even car parks. It can refill most electric vehicles in about 6 hr hours, which is pretty convenient. Level 3 / DC fast charging (50 kW and above): Built for quick stops, often delivering a substantial charge in 20 to 40 minutes.
If you're someone who charges up overnight or while you're at work, a Level 2 charger is probably all you need. But if you're always on the go, taking road trips, or just need a quick top-up, then DC fast charging is the way to go. The key is to choose an EV charger that fits your lifestyle, not just the one with the biggest specs.
2. Your Vehicle’s Maximum Charging Rate
When it comes to charging your EV, you might be curious about how quickly it can power up. The truth is, every EV has its own limits when it comes to handling power. For instance, if your car is only capable of handling 50 kW, using a 150 kW charger won't give you a speed boost. Some cars allow you to adjust the charging rate, while others have built-in limits to protect the battery.
To avoid wasting money on a home charger that's more powerful than you need, it's a good idea to check your owner's manual to see what your car's limits are. That way, you can make an informed decision and get the right charger for your vehicle. Plus, you'll avoid paying for power that your car can't even use.
3. Battery State of Charge
When the battery’s state of charge is low, the vehicle can charge relatively quickly, whether it is connected to an AC or DC supply. However, once the battery reaches around 80%, it usually cannot maintain the same high charging rate, so the charging speed gradually decreases. This is why we generally see the fastest charging between 20% and 80% state of charge, while charging from 80% to 100% is comparatively slower.
Also Read: AC vs DC EV Charging: What is the Difference?
4. Battery Temperature and Weather
When it comes to charging batteries, temperature plays a big role. You see, they work best when it's not too hot or too cold outside - around 20°C is usually considered perfect. But if it's freezing or really hot, the car will slow down the charging process to keep the battery from getting damaged. Most electric vehicles have special systems to control the temperature, but they can't completely eliminate the problem. This means that extreme temperatures will always have some effect on how well your battery charges.
In the UAE, we know that temperatures can get very high, which can affect an EV’s battery, especially when the vehicle is parked outside and exposed to direct sunlight. Prolonged exposure to high temperatures can impact battery health and may also result in slower charging.
However, Blaupunkt EV has developed a robust charging system to help minimize the impact of high temperatures and ensure efficient charging performance. And, if you can, try to charge your car at cooler times of the day, like early morning or late evening - it's a simple habit to get into, but it can really help. By doing this, you can help keep your car's battery cool and charge efficiently, which is especially important in a hot climate like the UAE.
5. Battery Age and Health
As time goes by, all electric vehicle batteries lose some of their power. Things like getting old, being exposed to very hot or cold temperatures a lot, and using fast charging stations frequently can make this happen faster. When a battery isn't as healthy, it might charge more slowly and not last as long as it used to, kind of like how your phone's battery gets worse over time. To slow down this process, it's a good idea to mix up how you charge your car - use fast charging and regular charging, and try not to let the battery completely die or get fully charged all the time.
Conclusion
When it comes to charging your EV, having a reliable charger is a must. For people who live or work in offices, or own properties, AC charges are usually a better option. Blaupunkt EV makes chargers for everyday use. If you get a charger that's just right for your vehicle, it can charge at its maximum speed without wasting any power. Before you buy a charger from any brand, make sure to check a few things as mentioned above.