JuiceBox 40 Amp EV Charger Review
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Review By
James Ndungu
- last updated 11/02/2026
The JuiceBox 40 Smart EV Charging Station delivers 40 amps of Level 2 charging with a 25-foot cable and NEMA 14-50 plug. UL and Energy Star certified, it provides efficient, safe charging for both indoor and outdoor use. WiFi connectivity enables smart features for optimized performance and energy management.
The JuiceBox 40 Amp EV Charger delivers fast and efficient charging for electric vehicles. With 40 amperes and 9.6 kW power, it charges up to seven times faster than standard Level 1 chargers. This unit works both indoors and outdoors, offering versatility for various installation locations. A built-in cable rack and security lock enhance convenience and safety.
Important Notice for Buyers
What This Means for the “Smart” Features
The JuiceBox 40 was once popular for its smart technology and app control.
Now that the company has left the market, the JuiceNet app is unreliable or completely stopped working for many users. Most standard JuiceBox 40A units don’t support the OCPP protocol and rely on proprietary software, so users cannot switch to third-party apps for smart charging features. Notifications, charging schedules, and energy tracking can no longer be counted on. The WiFi features that made this charger special are basically dead.
There is also no customer support if something breaks, and the warranty is worthless since there is no company to honor it.
The Good News About the Hardware
Even though the smart features are gone, the physical charger itself is still excellent. The JuiceBox 40 is built like a tank with an IP66 and NEMA 4X rating. This means it can handle rain, snow, extreme heat, and cold without any problems. It’s one of the toughest outdoor chargers you can find.
The charger delivers 40 amperes of power and 9.6 kilowatts of energy. This is considered the perfect amount for home charging. You can add about 30 miles of driving range to your car every hour it’s plugged in. That’s way faster than the basic charger that came with your vehicle.
One feature that stands out is the 25-foot charging cable. Most chargers only come with cables between 18 and 20 feet long. This extra length gives you more flexibility when parking and makes it easier to reach your car’s charging port, no matter where you park in your driveway or garage.
The Downsides You Should Know
The charging cable is thicker and stiffer than cables on other chargers, like the Tesla Wall Connector. This makes it harder to wrap up and store, especially when it’s cold outside. The cable gets even stiffer in freezing temperatures.
Since Enel X Way stopped supporting the JuiceBox, the software is barely usable. The JuiceNet app often crashes, loses connection, or won’t open, rendering smart EV charging features such as remote monitoring, charging schedules, and energy tracking unreliable. With no updates or bug fixes, the smart features that once justified the premium price are now essentially useless.
Standard JuiceBox units rely on proprietary cloud communication, unlike OCPP EV chargers, which let you use third-party apps for smart charging features. This means JuiceBox owners are stuck with the failing software, while OCPP chargers offer more flexibility and long-term support.
Even before the company shut down, the JuiceBox had problems with WiFi connections. It only works with 2.4GHz WiFi networks, and many users complained that it would disconnect randomly or fail to connect at all.
Safety, Efficiency, and Security
The JuiceBox 40 is fully UL and cUL Listed, meeting strict safety standards in both the U.S. and Canada. It is also ENERGY STAR® certified, ensuring energy-efficient operation in standby mode, and is NEC 625 compliant to meet national electrical safety codes for EV charging.
The unit is built to last, featuring a weatherproof IP66 and impact-resistant IK10 polycarbonate enclosure. Its internal communications are protected with AES-256 encryption, keeping your data secure.
Should You Buy One in 2026?
If you already own a JuiceBox 40, keep using it! The hardware is solid and reliable. Your charger will keep working as a basic “dumb” charger even if the app completely stops functioning. It will charge your car using whatever settings were last saved. If you need scheduling features, you can usually set those through your car’s own charging settings instead of using the charger’s app.
If you’re thinking about buying a new one: Don’t do it. Even if you find one on sale or at a big discount, you’re buying a product with no future software updates, no customer support, and no warranty. It’s not worth the risk.
Better Alternatives to Consider
If you’re shopping for a new EV charger in 2026, here are the three best EV chargers as of now:
Tesla Universal Wall Connector
This is considered the best charger you can buy right now. It comes with adapters that work with both J1772 plugs (standard on most EVs) and NACS plugs (Tesla’s charging port). This means it’s ready for the future since many car companies are switching to Tesla’s charging standard.
Autel MaxiCharger 80A EV Charger
This is the best choice if you want energy tracking and the latest smart features more than the JuiceBox used to offer.
Grizzl-E Smart EV Charger
If you just want a budget-friendly, simple, tough charger with smart features, this is your best bet. It’s a heavy-duty metal box that will last for ten years or more with zero complications.
JuiceBox 40 Amp EV Charger NEMA 14-50 Installation Guide
The wiring diagram below shows the setup for installing a NEMA 14-50R outlet with the JuiceBox 40 Amp EV Charger. It includes a 50-amp double-pole breaker, a main breaker, and neutral and ground busbars within a 120V/240V panel. Key components are labeled: L1 (Hot 1), L2 (Hot 2), Neutral, and Ground, using 6 AWG 90°C copper wire. The diagram specifies conduit sizes (¾”-1¼”) and proper grounding with a ground rod, compliant with NEC standards for a safe installation.
Compatible NEMA 14-50 Outlets
For optimal performance with your JuiceBox 40 Amp EV Charger, use high-quality NEMA 14-50 outlets. These outlets, preconfigured for NEMA Type 14-50P, comply with 2017 NEC Section 625.17, supporting up to 40A on a 50A circuit breaker. They deliver a continuous 40A (9.6 kW) charge, ensuring safe, efficient operation. Built for durability, they support 6 AWG wiring to prevent overheating during use, offering a reliable, future-proof charging solution.
JuiceBox 40 Amp EV Charger Installation with NEMA 6-50 Outlet
Installing the JuiceBox 40 Amp EV Charger using a NEMA 6-50 outlet differs from a NEMA 14-50 installation. The NEMA 6-50R outlet features two parallel hot prongs, with the larger prong on the right, and a horseshoe-shaped ground prong.
For proper installation, since the charger has a maximum of 40 amps, connect the outlet to a dedicated 50-amp circuit breaker, and use a 6-gauge wire for the wiring. Ensure the wiring is enclosed in conduit with an inner diameter ranging from 3/4″ to 1¼”.
The diagram below offers detailed instructions for wiring the NEMA 6-50R outlet for the JuiceBox 40 Amp EV Charger, including close-up views of the outlet’s terminal connections and the full branch circuit from the breaker panel to the outlet.
Compatible NEMA 6-50 Outlets for JuiceBox 40 Amp EV Charger
For optimal performance, use the high-quality NEMA 6-50 outlets listed below. These outlets are NEC-compliant, designed to support 40A continuous current on a 50A circuit breaker, and are compatible with 6 AWG wiring. This setup ensures safe, efficient charging while preventing overheating and ensuring reliable operation for the JuiceBox 40 Amp EV Charger.
JuiceBox 40 Amp EV Charger Compatible Outlet Covers
We added outlet covers while installing the JuiceBox 40 Amp EV Charger. The covers ensure safety by preventing contact with live components, blocking, tampering, improving aesthetics, conserving energy, and providing overload indicators. They also fit the plug and cable during active use.
Specification: JuiceBox 40 Amp EV Charger Review
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