How Fast Is Level 2 Charging?

Dec 20, 2023

level 2 EV charger

Ever wondered about the speed of Level 2 charging for electric vehicles? Buckle up for a journey into the world of EVs and their charging capabilities! This article is your guide to understanding just how fast Level 2 charging really is. We'll start by unraveling what Level 2 charging entails, demystify the technology powering it, and explore the factors influencing its speed. From real-world examples to the advantages and limitations, we'll cover it all. So, if you're curious about the role Level 2 charging plays in the electric vehicle landscape, join us as we explore the speed of Level 2 charging – it's an electrifying ride!

What is Level 2 Charging?

Level 2 charging is a pivotal aspect of the electric vehicle (EV) charging landscape, offering a faster and more efficient alternative compared to Level 1 chargers. But what exactly is Level 2 charging?

At its core, Level 2 charging represents a mid-tier charging option, falling between the slower Level 1 (standard household outlets) and the rapid Level 3 (DC fast charging) options. What distinguishes Level 2 charging is its higher power output, typically ranging from 3.3 kW to 22 kW. This elevated power capacity allows Level 2 chargers to replenish an EV's battery at a much swifter rate compared to Level 1 chargers.

Unlike Level 1 chargers, which use a standard 120-volt household outlet, Level 2 EV charger requireS a 240-volt power source. This increased voltage significantly accelerates the charging process, making Level 2 charging more practical for daily use, especially for those seeking a balance between charging speed and infrastructure accessibility.

Level 2 charging stations are commonly found in various locations, including public spaces, workplaces, and residential areas. They are popular choices for EV owners who want a faster charging option without the extreme power demands of Level 3 chargers. Moreover, Level 2 chargers are versatile and compatible with a wide range of electric vehicles, contributing to their widespread adoption.

In essence, Level 2 charging strikes a crucial balance, providing faster charging times than Level 1 while remaining more accessible and cost-effective than Level 3. As electric vehicles continue to gain popularity, understanding the significance of Level 2 charging is essential for both current and prospective EV owners looking to optimize their charging experience.

level 2 charger

How Does Level 2 Charging Work?

Understanding how Level 2 charging works is like peeking under the hood of electric vehicle (EV) charging. Let's break it down in simple terms.

Level 2 charging operates on a higher voltage, typically 240 volts compared to the standard 120 volts of your home's electrical outlets. This increased voltage is a game-changer, allowing Level 2 chargers to deliver more power to your EV. The power output usually ranges from 3.3 kilowatts (kW) to 22 kW, making it significantly faster than your regular plug-in charging.

Now, let's talk about the nitty-gritty of the technology. Level 2 chargers use a specialized connector, commonly a J1772 plug, to establish a secure connection between the charger and your EV. This connector is designed to handle the higher power levels efficiently.

When you plug in your electric vehicle to a Level 2 charger, the charging station communicates with your car to ensure a safe and compatible connection. Once the connection is established, the charger sends a flow of electricity to your EV's onboard charger, which then converts the electricity and stores it in the battery.

It's worth noting that the speed of Level 2 charging can vary based on your EV's onboard EV charger capacity. Some EVs can handle higher power inputs, allowing them to charge faster, while others may have lower capacities. It's like filling up a glass; a bigger glass (higher-capacity onboard charger) allows for a quicker fill-up.

Additionally, the availability of Level 2 chargers in public spaces, workplaces, and residential areas makes it a convenient choice for many EV owners. It strikes a balance between speed and accessibility, catering to the practical needs of everyday charging. In a nutshell, Level 2 charging is like giving your EV a quicker, more efficient sip of electricity, making your charging experience smoother and more convenient.

What Factors Affect Level 2 Charging Speed?

Several factors influence the speed of Level 2 charging for your electric vehicle. One key factor is the power output of the Level 2 charger itself. Chargers can vary in power levels, typically ranging from 3.3 kilowatts (kW) to 22 kW. The higher the power output, the faster your EV can charge.

Your electric vehicle's battery capacity and acceptance rate also play a role. Some EVs have larger batteries or can accept a higher rate of charge, allowing them to recharge more quickly. On the flip side, if your EV has a smaller battery or a lower charge acceptance rate, the charging process may take longer.

For example: Amproad offers a Level 2 charger with a 40-amp rating, we can determine its charging speed using the formula:

Charging Speed (kW) = Voltage (V) × Amperage (A)

Assuming a standard residential voltage of 240 volts (common for Level 2 chargers), let's calculate the charging speed:

Charging Speed=240V×40A=9.6kW

Therefore, the Level 2 charger from Amproad, with a 40-amp rating, would offer a charging speed of 9.6 kilowatts. Keep in mind that the actual charging speed experienced by your electric vehicle may vary based on factors such as the vehicle's onboard charger capacity and any power limitations set by the vehicle's manufacturer. It's always a good idea to check your vehicle's manual for specific charging details.

External factors such as temperature can impact charging speed. Extremely hot or cold temperatures may affect the efficiency of the charging process. Additionally, ensuring that your EV is compatible with the specific Level 2 charger you're using is crucial for optimal charging speed. So, the next time you're plugging in, consider these factors to make the most out of your Level 2 charging experience.

home EV charger

Comparison of charging times for various EV models by Using the Level 2 Charger

When it comes to charging electric vehicles (EVs) using a Level 2 charger, charging times can vary based on the model of the EV. Let's take a look at a simplified comparison of charging times for various popular EV models.

EV Model

Onboard Charger Capacity

Level 2 Charger (40A) Charging Speed

Tesla Model S

Varies (e.g., 11.5 kW)

Example: 9.6 kW (40A charger)

Nissan Leaf

6.6 kW

Example: 6.6 kW (40A charger)

Chevrolet Bolt EV

7.2 kW

Example: 7.2 kW (40A charger)

BMW i3

7.4 kW

Example: 7.4 kW (40A charger)

Ford Mustang Mach-E

Varies (e.g., 11.2 kW)

Example: 9.6 kW (40A charger)

Note: The charging speeds are examples and may vary based on specific configurations and model years.

Understanding these charging times is crucial for EV owners planning their charging routines. The table illustrates that the charging speed is influenced not only by the Level 2 charger's amperage (40A in this case) but also by the EV's onboard charger capacity. For instance, a Tesla Model S with a higher onboard charger capacity might charge faster than other models, even when using the same Level 2 charger.

It's essential for EV owners to be aware of their vehicle's specifications and charging capabilities, ensuring an optimized charging experience. Always refer to the manufacturer's information for precise charging details based on your specific EV model and configuration.

Related content: How long does it take to charge a tesla?

Tesla 110v charger

Advantages and Limitations of Level 2 Charging

Level 2 charging brings both advantages and considerations for electric vehicle (EV) owners.


Level 2 chargers provide a faster and more efficient charging option compared to standard household outlets (Level 1). With power outputs ranging from 3.3 to 22 kilowatts, these chargers significantly reduce charging times, making them suitable for daily use.

The convenience and versatility of Level 2 chargers shine through their ability to be installed in various locations, including public spaces, workplaces, and residential areas. This widespread availability enhances the ease of integrating EV charging into daily routines.

Balancing power demand is another advantage. Unlike Level 3 chargers that require high power, Level 2 chargers offer a faster charge without imposing excessive demands on the power grid. This balance contributes to their practical deployment in diverse settings.

Compatibility is a key strength of Level 2 charging. Utilizing standardized connectors like the J1772 plug ensures compatibility with a wide range of electric vehicles, fostering interoperability and convenience for EV owners.


While faster than Level 1 chargers, Level 2 charging falls behind Level 3 DC fast chargers in terms of speed. If rapid charging is a priority, especially for long-distance travel, Level 3 chargers may be more suitable.

The charging speed of Level 2 chargers is contingent on the onboard charger capacity of the EV. Vehicles with lower onboard charger capacities may experience limitations in charging speed.

For long-distance travel, particularly in areas with limited charging infrastructure, Level 3 chargers might be a more practical choice due to their faster charging speeds.

Can You Install Level 2 Charger at Home?

Certainly! When setting up a Level 2 charger at home, you might also consider the Tesla Destination Charger for added convenience if you own a Tesla vehicle.

Home Installation with Level 2 EV Charger:

Installing a Level 2 charger, including Tesla's Destination Charger, at home is a straightforward process. Much like other Level 2 chargers, the Tesla Destination Charger requires a dedicated 240-volt electrical circuit. Hiring a licensed electrician is recommended to ensure a safe and compliant installation.

Considerations with Tesla Destination Charger:

If you're a Tesla owner, the Tesla Destination Charger can be an excellent choice. It's specifically designed for Tesla vehicles, offering seamless integration and optimal performance. Tesla provides Destination Charger connectors, making it a convenient solution for Tesla EV owners.

Costs and Benefits:

Installation costs may include the charger, electrical work, and permits, similar to other Level 2 chargers. Tesla Destination Chargers, while tailored for Tesla vehicles, provide the same benefits of faster charging times at home, ensuring your Tesla is always ready for your next journey.

Last but not least, installing a Level 2 charger at home, including options like the Tesla Destination Charger, is a practical way to enhance your electric vehicle charging experience. It combines the convenience of home charging with Tesla's specialized technology, ensuring efficient and reliable charging for your Tesla vehicle.