Best 40 Amp EV Charger Reviews: Top Level 2 Picks
If you want faster home charging without moving to an extremely high-powered EV charger, a 40-amp unit is a practical choice. A 40-amp Level 2 charger can deliver up to 9.6 kW on a 240-volt circuit, making it suitable for overnight charging and regular daily driving.
The best 40 amp EV charger should offer more than fast charging. Build quality, cable length, installation requirements, weather resistance, smart charging features, warranty coverage, and ease of use all matter when choosing a home EV charging station.
For this guide, I compared two well-known options: the Grizzl-E and ChargePoint Home Flex. Both are strong choices, but they are designed for slightly different priorities.
If you are comparing several Level 2 charging options, our guide to the highest rated level 2 ev charger can also help you narrow down the right charger for your vehicle and driving needs.
Table of Contents
Table of Contents
Best 40 Amp EV Charger Comparison
The table below gives you a quick look at the two chargers covered in this review. Use it as a starting point before reading the detailed reviews and buying recommendations.
| Charger | Maximum Current | Power at 40A | Connector | Smart Features | Weather Resistant | Best For |
|---|---|---|---|---|---|---|
| Grizzl-E Classic | 40A | 9.6 kW | J1772 | Limited/basic | Yes | Durable outdoor charging |
| ChargePoint Home Flex | Up to 80A* | 9.6 kW at 40A | J1772 / NACS versions | Yes | Yes | Smart charging and app control |
*Actual charging current depends on the installation, vehicle, circuit rating, and charger configuration.
This quick comparison shows why the best 40 amp EV charger is not always the one with the highest advertised output. For many homeowners, reliability and convenient charging controls are more important than maximum amperage.
Best 40 Amp EV Charger Reviews
1. Grizzl-E Classic 40 Amp EV Charger
The Grizzl-E Classic is one of the most appealing options for drivers who want a straightforward and rugged home EV charger. It is designed around a 40-amp maximum charging output and can provide up to 9.6 kW when connected to a suitable 240-volt circuit.
One of its biggest strengths is its heavy-duty construction. The charger is built for indoor and outdoor use, making it a good choice for garages, carports, and driveways where the charging equipment may be exposed to changing weather conditions.
The Grizzl-E also keeps things relatively simple. Instead of focusing heavily on smartphone features, it concentrates on dependable charging hardware.
Grizzl-E Key Features
| Feature | Grizzl-E Classic |
|---|---|
| Charging power | Up to 9.6 kW |
| Maximum current | 40A |
| Voltage | 240V Level 2 |
| Connector | J1772 |
| Installation | Hardwired or plug-in configurations depending on model |
| Indoor/outdoor use | Yes |
| Cable | Heavy-duty charging cable |
| Best feature | Rugged construction |
| Ideal user | Homeowners wanting simple, durable charging |
The Grizzl-E is especially attractive if your priority is a dependable EVSE rather than a charger loaded with connected features.
Is Grizzl-E a Good Home EV Charger?
Yes. The Grizzl-E is a strong choice for homeowners who want a reliable 40-amp charging station with a rugged design.
It is particularly useful when the charger will be installed outside or in an area where durability matters. It also makes sense for EV owners who do not need advanced energy management or extensive app-based controls.
For buyers who prefer a simple installation and durable hardware, the Grizzl-E deserves a place near the top of the list.
2. ChargePoint Home Flex
ChargePoint Home Flex takes a different approach. It is a connected Level 2 EV charger designed for drivers who want more control over charging through an app and connected features.
Although the Home Flex can support higher amperage configurations, it can be configured for 40-amp charging when the electrical installation and vehicle support that setting. At 40 amps and 240 volts, the theoretical output is approximately 9.6 kW.
This makes it a flexible choice for homeowners who may upgrade their electrical system or EV in the future.
ChargePoint Home Flex Features
| Feature | ChargePoint Home Flex |
|---|---|
| Charging level | Level 2 |
| 40A output | Up to 9.6 kW |
| Maximum capability | Higher-current configurations available |
| Connector | J1772 or applicable NACS version |
| App control | Yes |
| Charging monitoring | Yes |
| Scheduling | Yes |
| Indoor/outdoor use | Yes |
| Best feature | Smart charging ecosystem |
The ChargePoint app is one of its biggest advantages. Drivers can monitor charging activity, manage sessions, and use scheduling features from their smartphone.
For someone who wants a connected charging experience, ChargePoint is a particularly attractive alternative to a basic EVSE.
Grizzl-E vs ChargePoint Home Flex
Choosing between these two chargers comes down to what you value most.
Grizzl-E is better suited to buyers who prioritize rugged construction and straightforward operation. ChargePoint is more appealing to drivers who want smart charging controls, app connectivity, and a more feature-rich experience.
| Category | Grizzl-E | ChargePoint Home Flex |
|---|---|---|
| Charging at 40A | Excellent | Excellent |
| Outdoor installation | Excellent | Very good |
| Smart controls | Basic | Excellent |
| Mobile app | Limited | Yes |
| Simple operation | Excellent | Very good |
| Future flexibility | Good | Excellent |
| Best for | Durability | Smart charging |
If you are still comparing charging stations, our roundup of the highest rated level 2 ev charger options provides a broader look at popular home EVSE choices.
How Much Power Does a 40 Amp EV Charger Use?
A 40-amp EV charger connected to a 240-volt supply can provide:
40A × 240V = 9,600 watts
That equals approximately 9.6 kW of charging power under ideal conditions.
Actual charging speed can be lower because the vehicle’s onboard charger controls how much power it accepts. Electrical losses, battery temperature, charging limits, and state of charge can also affect charging performance.
For example, an EV that can accept only 7.2 kW will not charge at 9.6 kW simply because a 40-amp EVSE is installed.
What Breaker Do You Need for a 40 Amp EV Charger?
A continuous EV charging load generally requires the branch circuit to be sized at 125% of the maximum continuous charging current under NEC requirements.
For a 40-amp charger:
40A × 125% = 50A
Therefore, a properly installed 40-amp EV charger commonly requires a 50-amp circuit, subject to the specific equipment instructions, wiring method, local code requirements, and installation conditions.
A qualified electrician should verify the panel capacity, conductor size, breaker rating, disconnect requirements, grounding, and other installation details before installation.
How Fast Does a 40 Amp Charger Charge an EV?
Charging speed varies significantly between EV models because battery capacity and onboard AC charging capability differ.
A 40-amp Level 2 charger can provide around 9.6 kW under suitable conditions. A vehicle with a 60-kWh battery could theoretically receive a substantial portion of its usable battery capacity during an overnight charging session.
In real-world use, charging time is affected by:
- Battery size
- Vehicle AC charging limit
- Battery state of charge
- Outdoor temperature
- Charging losses
- Battery management system
- Electrical supply
For most daily commuters, a 40-amp home charger provides enough overnight charging capacity without requiring an extremely high-power installation.
What to Look for When Buying a 40 Amp EV Charger
Before buying a home charging station, check these important specifications.
Charging Output
Make sure the charger can provide the current your EV can actually use. Buying a charger with a higher maximum rating does not necessarily mean your vehicle will charge faster.
Circuit Requirements
Check whether the charger is plug-in or hardwired and determine the required breaker and conductor size before purchasing.
Connector Type
J1772 remains common for many EVs, while newer vehicles and charging equipment may use NACS. Check your vehicle’s charging port before ordering.
Cable Length
A longer EV charging cable can make driveway or garage installations much easier. However, excessive cable length can also make storage less convenient.
Weather Resistance
Outdoor charging requires equipment designed for outdoor conditions. Look for appropriate enclosure protection and follow the manufacturer’s installation instructions.
Smart Features
If you want charging schedules, usage monitoring, notifications, or app control, a smart EV charger may be worth the additional cost.
Which Is the Best 40 Amp EV Charger?
For a homeowner who wants rugged, straightforward charging, the Grizzl-E Classic is an excellent choice. Its 40-amp output and durable construction make it particularly attractive for garage and outdoor installations.
For drivers who want smartphone control, scheduling, charging information, and future flexibility, the ChargePoint Home Flex is the stronger option.
Overall, the best 40 amp EV charger depends on your vehicle, electrical service, installation location, and preferred features rather than charging amperage alone.
If you want to compare more premium and highly reviewed charging stations before making a purchase, check our highest rated level 2 ev charger guide for additional options.
Frequently Asked Questions
Is a 40 amp EV charger enough for home charging?
Yes. A 40-amp Level 2 charger can deliver up to about 9.6 kW from a 240-volt supply. For many EV owners, this is more than enough for overnight charging and daily commuting.
Is a 40 amp EV charger better than a 32 amp charger?
A 40-amp charger can provide more charging power than a 32-amp unit when the vehicle and electrical system support it. However, the difference may not matter if the EV has a lower AC charging limit.
What size breaker is needed for a 40 amp EV charger?
A 40-amp continuous EV charging load commonly requires a 50-amp circuit under the 125% continuous-load calculation. Always follow the charger’s installation instructions and applicable local electrical requirements.
Can I install a 40 amp EV charger outdoors?
Many Level 2 EV chargers are designed for outdoor installation, including the Grizzl-E and ChargePoint options discussed here. Confirm the specific model’s outdoor rating and installation requirements before mounting it outside.
Should I buy Grizzl-E or ChargePoint?
Choose Grizzl-E if rugged construction and simple operation are your priorities. Choose ChargePoint Home Flex if you prefer app connectivity, charging schedules, and smart charging features.
Final Verdict
A home Level 2 charger is one of the most useful upgrades for an EV owner who wants convenient overnight charging. A 40-amp setup offers a strong balance between charging speed, electrical requirements, and everyday practicality.
The Grizzl-E stands out for its durable design and straightforward operation, while ChargePoint Home Flex is the better fit for drivers who want connected features and greater flexibility.
Before ordering, confirm your EV’s maximum AC charging rate, connector type, available electrical capacity, and installation requirements. Then choose the charger that fits how you actually use your vehicle.
For more recommendations across different power levels and budgets, visit our highest rated level 2 ev charger guide before making your final purchase.
Related Guides
- EVIQO Level 2 EV Charger Review
- Grizzl E Level 2 EV Charger Review
- Emporia EV Charger Review
- Hardwired vs Plug In EV Charger
- How to Install a Level 2 EV Charger
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