9 Factors Affect Electric Vehicle Charging Speed

2023-05-27 14:01:48  Resource

 What are the factors that affect electric vehicle charging speed?
Nowadays, more and more individuals are transitioning from traditional vehicles to electric vehicles (EVs) due to the policies that aim to create a better environment, rising oil costs, and other factors. when you decide to purchase an EV, you may be more concerned about one issue - the charging speed. Let's explain what are the factors that affect electric vehicle charging speed.


The following are the questions that people often ask themselves before deciding to purchase or after buying an EV:

Q: 1. How long will it take to charge my car?

A: The time it takes to charge an EV battery depends on the battery size and the charging method. Generally, it takes anywhere from 30 minutes to several hours to fully charge an EV, depending on the level of charging available.

Q: 2. What is the battery life of my EV?

A: The battery life of an EV may vary depending on the usage and maintenance of the vehicle. Some EV batteries may last up to 10 years or more, while others may need to be replaced after a few years.

Q: 3. Does my car support fast charging?

A: Not all EVs support fast charging. It is important to research the charging capabilities of an EV before purchasing to ensure that it meets your needs.

Q: 4. Are there enough charging stations in my city/state/country?

A: The availability of charging stations can vary from location to location. Before purchasing an EV, it is important to research the availability of charging stations in your area to ensure that you can easily charge your vehicle.

Q: 5.How can I improve my battery life?

A: Proper maintenance of the EV battery can help improve its life. This includes regular charging, avoiding overcharging and extreme temperatures, and minimizing the use of fast charging.


Here are Several factors can affect the charging speed of an EV to consider:

EV charging speed

1. Battery Capacity:

The battery capacity of an EV is one of the most significant factors that determine charging speed. The higher the battery capacity, the longer it takes to fully charge the battery. Therefore, it's essential to choose the right car battery capacity based on your traveling needs and charging requirements.

2. EV Charging Station Power:

ev AC charger230111  ev DC charger230111

The power output of an EV charging station directly affects the charging speed of the EV. Generally, EV chargers come in two types: DC and AC. DC EV charging stations have a higher output power of 30 kW to 200 kW. These charging stations can charge an EV in a short period, ranging from 30 minutes to 1 hour. AC charging stations have a common output power of 7 kW, 11 kW, and 22 kW. These charging stations are slower in charging an EV because they supply AC power to the EV battery, which the EV’s onboard charger then converts to DC power.

3. Charging Port and Cable:

The charging port, cable, and connector type are important factors that determine the charging speed of the EV. The type of connector determines the maximum charging speed that the EV can handle. Therefore, it's crucial to choose a charging station with the correct connector and cable to ensure maximum charging speed.
4. Environmental Temperature:
EV batteries operate optimally at outdoor temperatures between 20 and 25 °C; so, when temperatures start to drop, so does the efficiency of the battery. This is because the battery will use a portion of the incoming charge to generate energy in the form of heat before the battery is warm enough to charge, thus resulting in a reduced charging speed. Similarly, if the battery is exposed to high temperatures, your EV will require more energy to cool down its battery, which will also result in slower charging speeds.

5. Cost:

Finally, the cost of charging an EV can affect the charging speed. High-powered charging stations can cost more, but they offer faster charging speed than standard ones. Moreover, the price of electricity varies by region, so it's important to consider the cost of charging an EV in your area.

6. Current battery SOC level (Status of the battery)

The State of Charge (SoC) is the percentage of charge your EV’s battery has when you pull up to a charger. EVs draw power at a higher rate when they are between 20% and 80% charge, however when the battery is below 20% and over 80% the charge rate will slow significantly. This is due to the car protecting the battery. Therefore, if arriving at a charger with an already very high SoC, the battery will be slower to pull the additional charge.

7. Your vehicle’s current and voltage limits
This one can be tricky to understand, but it’s important. The amount of power your EV battery receives in a charge is defined by a unit of power called a kilowatt (kW). And power (kW) is a product of voltage (V) and current (A). Both your vehicle and the charger have voltage and current limits.

8. Other loads in use while charging
If you stay in your car during fast charging, it is important to be aware that some of the energy that should be going to the battery is instead used up by cabin air conditioning, heating, lights, radio, and other accessories. Additionally, the thermal management system also utilizes some of the charging power to regulate the temperature of the battery. This is why it may seem like the kW display on the charger is a bit higher than what the in-dash displays show.

9. Battery deterioration
Over time, batteries can deteriorate and lose their charging capacity. As a rule of thumb, it is recommended to stop charging when the SoC reaches 80-85%. This not only prevents the battery from becoming too hot but also saves time as the charging rate decreases when the battery is close to being full.


Now that you are aware of the factors that affect the charging speed of your EV, it is important to choose the high-quality and right EV charging pile for your car . If you are in need of EV charging fittings, you need not look any further than Grasen Power.

Grasen Power is a high-tech enterprise specializing in the research and development, manufacture, sales, and service of new energy electric vehicle charging equipment products. including intelligent AC and DC chargers, high-power charging modules, DC/DC converters, etc. Grasen has exported DC EV Charging stations to more than 30 countries. Our main markets include Europe, North America, South America, Asia, Africa, etc. By early 2023, more than 2,000 global charging stations made by Grasen have been established.
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Very satisfied with the quality of the product and the suppliers service. The product was delivered in good package. Will definitely purchase from this supplier again.

-- Marcus Groll,A Charging Station Owner in UKRAINE

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