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Availability:
In Stock.
Arrives
Monday, Oct 26
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Size: 50Amp-21FT
Features
- Reminder: This electric car charger extension cable is for J1772 cars only. Tesla vehicles need a separate J1772 adapter (not included). Always fully uncoil the cord before use to prevent overheating. Do not coil the cord while in use
- 21FT J1772 EV Extension CableThe Seguma 21ft (6.4m) J1772 extension cord extends the reach of Level 1 or Level 2 chargers with J1772 connectors for your EVs/PHEVs. Ideal for home or on-the-go charging, it provides both power and extra reach
- Powerful 50Amp EV Charging Extension CordThis Level 2 J1772 extension cable supports up to 50 amps, offering powerful and reliable charging with no power loss. Charge your EV/PHEV quickly and efficiently, getting you back on the road fast
- Superior Conductivity for Safe ChargingThe car charger extension cable has silver-plated inlets for excellent conductivity and to prevent overheating. This ensures efficient, safe charging for your EV, giving you peace of mind
- Sturdy EV Charging CableMade from high-quality 100% copper TPE, with solid J1772 connectors, this ev charging extension cord is built for durability. Stronger than most, it lasts longer and is IP66 waterproof, making it reliable in any weather
- 1 Year Manufacturer-Seguma provides 12 months guarante on the ev charger extension cable on any quality issues. If there is any questions on the operation, pls contact us for 24/7 support
Description
Seguma specializes in EV charging equipment, including ev charger for J1772/NACS, NACS to J1772 adapters, J1772 to NACS adapters, EV Extension Cords for J1772/NACS, allowing you to charge your EV from any standard outlet. You can charge your EV at home, at work, or on the go, without worrying about compatibility issues. Seguma is committed to provide innovative charging solutions that make EV owners more accessible and convenient.
Manufacturer: Shenzhen YongChuangCheng Technology Co., Limited
Brand: SEGUMA
Item Weight: 8.64 pounds
Product Dimensions: 12 x 4 x 14 inches
Item model number: EV-AC04001U
Manufacturer Part Number: EV-AC05001U
Voltage: 240 volts
Wattage: 12000 watts
Date First Available: December 12, 2023
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Oct 26
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 50Amp-20FT
Great product, works as described. No drop in current that I can detect. I’m very happy with it so far. If there are any drawbacks. It would be that it’s hard to connect it to the end of the cable you are extending, but once it’s connected it’s solid.
Reviewed in the United States on August 21, 2026 by Matt
Size: 50Amp-20FT
Very good
Reviewed in the United States on August 9, 2026 by Emir
Size: 50Amp-20FT
Heavy duty cord and sheathing. Seems like it will hold up well against being dragged on the concrete garage floor and driveway. Has no problems charging my Model Y with it. No errors or faults indicating a short to loose connection. It’s a bit pricey, but the value is there if it lasts a few years.
Reviewed in the United States on September 2, 2026 by JeffWasHereToo!
Size: 50Amp-21FT
Works as needed, but like others mentioned, the fit is tight. We have a 25 RAV PHEV and the connector is difficult to remove after charging; so much so that my wife cannot remove it herself. Not sure what causes the sticking, but it fits comfortably in the wall mounted holder.
Reviewed in the United States on July 26, 2026 by JR
Size: 50Amp-40FT
Web is filled with code police warning you not to use extension cords with EV chargers and I understand they mean well. But why they feel great about charging their EV's (potential fire hazard) inside their garage/home while complaining about extension cords is beyond me. Anyhow I am not going to park my 8000 lb truck on grass just so I can live by the code so I got this + hardwire Emporia charger on 60 amp circuit breaker and I consistently get 46 amp x 240V (11KW/hr) of charging speed. It has worked great since first day and I am writing this after 9+ months of trouble free use. It did get warm in summer months when it's exposed to hot sun but never too warm to the touch. And it stayed very pliable which I hope stays so during winter months ahead. Considering price of copper wires and cost of labor to run 40 extra ft of 2x 6 awg wires + 8 awg ground, this is an exceptional value.
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Reviewed in the United States on October 3, 2025 by Tsu Yung Kuo
Size: 50Amp-20FT
I used this with my 48A charger and got full current to the vehicle. The connections are solid and work great. Quality seems to be on par with my charger cable/connector and the cable is pliable in the cold so far. It would be nice to have something to cover the connections from getting scratched on the ground. I have figured something out but I'm sure others would appreciate this. We don't want to scratch up our connectors that have to lay on the ground when in use. The silicone/rubber covers for the ends are nice and look to seal well. Very happy.
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Reviewed in the United States on November 10, 2025 by Harry Pankratz
Size: 50Amp-20FT
Great quality product!
Reviewed in the United States on July 1, 2026 by Amazon Customer
Size: 50Amp-21FT
The extension cable appears to be well built and, unlike other cables such as WENSTORM, it is not thick or rigid. I really like the fact that this cable is thinner and more flexible. It also includes a built-in “micro-switch” in the charging handle, which signals the charger to stop charging before disconnecting. I was using this cable with a J1772-to-Tesla adapter and specifically needed an extension cable with a micro-switch so the charger would stop charging, unlock, and allow me to safely remove the charging handle. After further research, I found that EVDANCE and SEGUMA also offer extension cables with this feature, and it appears these two brands may be from the same company.
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Reviewed in the United States on January 17, 2026 by SK