Level 1 EV Chargers: How They Work and Why They Matter

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LEVEL 1 EV CHARGERS

Did you know you can charge your EV with the same outlet that you use for your toaster? That’s the simple magic of Level 1 EV chargers, the most basic charging system in the world of electric vehicles. Unlike their faster counterparts, these chargers deliver energy at a pace that your home’s electrical infrastructure can comfortably accommodate without needing an upgrade.

Level 1 chargers tap into the common 120-volt AC outlet to provide electric vehicles with the juice they need. While they might not offer the swiftness of Level 2 ev chargers or 3 chargers, understanding their modest power output, relatively leisurely charging speed, and connector compatibility is essential for any EV owner.

In the following guide, we will learn all about Level 1 charging technology, examine its limitations, and highlight a selection of the top chargers on the market. We will discuss the complexities of these everyday EV charging stations, and review the key details that influence driver experiences and the broader implications of adopting this technology.

EV Charger Types
Image courtesy of BC Hydro

How do EV chargers work?

Level 1 EV chargers represent the most basic charging option for electric vehicles. They are designed to be compatible with the built-in SAE J1772 charging port that comes standard with most EVs, allowing you to connect directly to a typical household 120-volt electrical outlet. The simplicity of this setup makes Level 1 chargers an accessible option for many EV owners who don’t opt for a level 2 EV charger installation.

SAE J1772 charger

The charging process is straightforward: by using the nozzle cable provided with the vehicle, you plug one end into the EV’s J1772 charging port and the other end into a conventional wall outlet. This is a convenient solution that doesn’t necessitate additional hardware or software. Once plugged in, charging begins immediately, and the vehicle’s dashboard will indicate when the battery is fully charged, taking the guesswork out of the equation.

Basic Functionality

Understanding the basic functionality of Level 1 chargers is essential for EV owners who prefer convenient, albeit slower, charging options. Level 1 chargers are the most accessible type of charger since they plug directly into standard 120-volt outlets—the kind you find in practically every household. This ease of use means they require no special installation.

Here’s a brief overview of what you can expect from a Level 1 charger:

Power OutputRange Per HourFull Charge Time (All-Electric EV)Full Charge Time (Hybrid EV)
1.3 kW – 2.4 kW3 – 5 miles40 – 60 hours5 – 6 hours

Often referred to as “trickle chargers,” Level 1 chargers may not offer the swiftness of more powerful stations, but they can be an adequate and cost-effective solution for those with shorter daily commutes or as an emergency charging option.

Power Output and Charging Speed

The power output of these chargers generally ranges between 1.3 kW and 2.4 kW. These figures translate into an estimated accrual of 3 to 5 miles of range per hour of charging. To put it into perspective, here’s how this looks in terms of charging speed:

Charging Time (Hours)Estimated Range Added (Miles)
13 – 7
515 – 35
1030 – 70
2472 – 168

While these trickle chargers are not designed for rapid charging, their convenience lies in overnight charging or topping up an EV’s battery during extended parking periods. Full battery replenishment for an all-electric EV may require 40 to 60 hours, whereas a hybrid EV generally takes around 5 to 6 hours.

Charging cable and connector types

Level 1 chargers predominantly use the J1772 connector, which is a standard in North America for Level 1 and Level 2 EV charging. This connector type ensures compatibility with a wide range of electric vehicles, excluding those with proprietary connectors like Tesla’s.

While vehicles have different kinds of charging ports, the J1772 is universal for non-Tesla EVs. Level 2 and DC Fast Charging stations may have additional connectors like CCS, CHAdeMO, and Tesla-specific versions, to accommodate different vehicle requirements. Nonetheless, for home charging purposes, the standard 120-volt AC connector used by Level 1 stations is suitable for most electric vehicle supply equipment (EVSE), guaranteeing ease of use for EV owners who charge their cars primarily at their residence.

Charger LevelConnector TypeVoltageRegion
Level 1J1772120V ACNorth America
Level 2J1772 (NA), Mennekes (EU)240V ACGlobal
DC FastCCS, CHAdeMO, Tesla (proprietary)VariousGlobal

Understanding the Limitations

Level 1 EV chargers are the baseline in the electric vehicle supply equipment ecosystem. They plug into a standard outlet, making them the most accessible type of charger. However, they come with several limitations that can affect the practicality of their use, especially for drivers with substantial daily driving needs or those operating all-electric vehicles (BEVs) with larger battery capacities.

Slow charging speed

Electric vehicle owners relying on Level 1 charging will experience the slowest possible charging speeds. With an output ranging between 1.3 kW to 2.4 kW, a Level 1 charger typically adds a mere 3 to 5 miles of range per hour of charging. In comparison to other charging options, public EV charging stations rarely include Level 1 chargers due to their lack of speed, indicating the broader push towards more efficient charging solutions.

Safety hazards

While Level 1 chargers are generally safe due to the lower voltages involved, they do shed light on safety considerations for higher-level chargers. For instance, Level 3 DC fast chargers, which deliver between 50 kW and 350 kW, can pose safety hazards due to the high currents necessary for rapid charging. Similarly, installing a Level 2 charger at home, which requires working with a 240-volt outlet, can present safety risks if not performed correctly.

Lack of advanced features

Level 1 chargers often come without the bells and whistles seen in their Level 2 counterparts. Advanced features such as remote charge scheduling, real-time charging data, and integration with home energy systems are typically absent in Level 1 chargers. The lack of these conveniences can result in inefficiency, as users are unable to optimize charging sessions based on energy costs.

Cost-effectiveness and impact on battery life

Although Level 1 chargers have a lower upfront cost, their slow charging speed can lead to higher overall energy consumption. This inefficiency not only affects the cost-effectiveness of charging but may also contribute to diminishing the EV battery’s lifespan due to extended charging periods.

Inconvenience for multiple EV households

Households with more than one electric vehicle may find Level 1 chargers particularly impractical due to the snail-paced charging. When several vehicles require charging, Level 1’s limited output can create logistical nightmares, where planning and prioritizing which car gets to charge first becomes a daily hassle.

Reduced flexibility in emergencies

The most considerable drawback of a Level 1 charger emerges in emergencies or when unexpected longer trips are necessary. The inability of Level 1 chargers to provide quick top-ups can be a major inconvenience. This lack of rapid charging capability means that a vehicle with a low battery might not be ready in time for urgent travel, potentially leaving the owner stranded or forced to seek alternative transportation.

Environmental considerations

From an environmental perspective, the longer charging times of Level 1 chargers result in increased energy demands, making them less environmentally friendly than other options. Adopting more efficient chargers, like Level 2 units, can significantly decrease energy usage, translating to a reduced carbon footprint and a more sustainable charging practice. As the electric vehicle market grows and technology improves, the push for upgrading to higher-efficiency chargers is in line with environmental goals, urging owners to consider the longer-term impacts of their charging infrastructure.

Slow charging speed

When you think of charging an electric vehicle (EV), the speed of the charge is a crucial factor to consider, particularly if you’re often on the go. Level 1 EV chargers fall into the category known for their slow charging speed compared to other types of EV chargers.

Top 3 Level 1 Chargers

Level 1 EV chargers represent the most straightforward and accessible form of EV charging. Here, we detail three noteworthy Level 1 chargers, each with its own set of attributes, that might just fit seamlessly into your daily life.

Lectron Portable J1772 EV Charger

One of our preferred chargers is the Lectron Portable Level 1 J1772 EV Charger – a reliable companion in ensuring your electric car is topped up without the hassle of complex setups or infrastructure.

lectron lvl 1

Designed with compatibility in mind, this charger works effortlessly with vehicles equipped with a standard J1772 charging port, making it a versatile option for various EV models. Its portability is underscored by a 16ft extension cord paired with a regular NEMA 5-15 plug, allowing EV owners to charge from just about any standard regular household outlet, typically a 120-volt outlet — whether at home, at the office, or during a getaway. You don’t need to hunt for a specialized charging station; any outlet becomes a potential power source for your electric car.

Safety and quality are key, and with its ETL certification, the Lectron Level 1 Charger meets rigorous testing standards, ensuring peace of mind for users. This Level 1 charger operates at 110 volts and 15 amp circuit, delivering a steady but gentle flow of electricity, akin to a trickle charger, ideal for overnight charging or as an emergency backup.

For the green-conscious traveler looking for a straightforward and economical charging solution, the Lectron Portable Level 1 J1772 EV Charger emerges as a smart choice, ushering in an era of convenience and simplicity in electric car charging.

DEWALT Portable

When it comes to charging your electric vehicle (EV), understanding the different charging options is essential. A DEWALT Portable Level 1 charger is a convenient choice, designed to work seamlessly with the ubiquitous SAE J1772 charging port present in most EVs. These chargers plug straight into a standard 120-volt outlet—the same kind you’d use to power your laptop—making them incredibly accessible. No special electrical panel upgrades or dedicated charging stations are necessary.


Ideal for overnight charging or as an emergency charger, the Level 1 chargers typically come standard with new EV and plug-in hybrid electric vehicle (PHEV) purchases. They can provide about 3-5 miles of driving range per hour of charging, which suits drivers with moderate daily commutes or those who can charge at home overnight. Although not as fast as a Level 2 (L2 charger), which requires a 240-volt outlet and can considerably increase the miles of electric driving range per hour, the DEWALT Portable charger is a practical solution for topping off your EV’s batteries without the need for rapid charging facilities found at public charging stations.

dewalt level 1

Tesla Mobile Connector

The Tesla Mobile Connector stands as a prime example of a EV charger, tailored specifically for Tesla electric vehicles. Despite its premium price point, it justifies the investment with a UL (Underwriters Laboratories) certification, which vouches for its safety and high-quality standards.

tesla mobile connector

For Tesla owners, the Mobile Connector facilitates a straightforward charging process. Even for those who own non-Tesla EVs, the provision of adapters entails some level of cross-compatibility—though it’s important to note that efficiency may vary.

As you consider the size of your EV’s battery size and daily driving requirements, remember that a Level 1 charger is designed for ease rather than speed. It’s a practical choice for maintaining your electric vehicle’s battery, especially when a higher-level charger is not accessible.

Wrapping Up

Level 1 EV chargers are ideal for their cost-effectiveness and ease of use, making them suitable for overnight charging and as a backup option. While they offer slower charging speeds compared to Level 2 chargers, they are sufficient for shorter daily commutes and emergency situations. Their simplicity and accessibility make them a practical choice for many electric vehicle owners, despite the longer charging times. Overall, they play a crucial role in the EV charging infrastructure, providing a reliable and straightforward solution for many users.

FAQ About Level 1 EV Chargers

What is a Level 1 EV charger?

A Level 1 EV charger uses a standard 120-volt household outlet to charge electric vehicles, providing a power output of 1.3 to 2.4 kW and adding 3-5 miles of range per hour.

How long does it take to charge an EV with a Level 1 charger?

Charging times vary based on the vehicle’s battery size, but typically, it takes overnight to fully charge an EV with a Level 1 charger.

Is a Level 1 charger sufficient for daily use?

Level 1 chargers are cost-effective, easy to use, and require no additional installation, making them a convenient option for many homeowners.

Are there any limitations to using a Level 1 charger?

The main limitations are the slower charging speed and the inconvenience for households with multiple EVs or high daily mileage. They also lack the advanced features found in higher-level chargers.

What are the benefits of using a Level 1 charger

Level 1 chargers are cost-effective, easy to use, and require no additional installation, making them a convenient option for many homeowners.

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