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Jan 15, 2024 6:13 AM

Rexing - J1772 Extension Charging Cable - 32A 20ft - Black $99.99

$100

$200

50% off
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Free shipping or store pickup if available.

Features:
  • Extend Your Charging Reach - The Rexing J1772 Extension Cable is the perfect accessory for increasing the reach of your EV charging. Compatible with Level 1 and 2 chargers with J1772 connectors, this extension cord offers greater flexibility for your charging needs.
  • 20 Amp With 40Ft - This extension cord supports up to 40 amp charging and comes with a heavy-duty 20ft outdoor cable, allowing you to charge your EV even from a distance.
  • Durable And Waterproof - Made of high-strength ABS plastic, this extension cord is stronger and more durable for long-term use. It also has an IP66 waterproof rating, allowing you to use it anytime and anywhere, even in wet weather conditions.
  • Improved Charging Performance - The inlet of the Rexing J1772 Extension Cable is silver-plated, providing superior conductivity and preventing overheating, ensuring safe and reliable charging for your electric vehicle.
  • Support - All Rexing products comes with an 18 month warranty. We stand behind the quality of our products, and this extension cord is no exception.
What's Included
  • Rexing J1772 Extension Charging Cable
  • Travel Case
  • User Manual
https://www.bestbuy.com/site/rexi.../6543370.p
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Deal Details
Community Notes
About the Poster
Free shipping or store pickup if available.

Features:
  • Extend Your Charging Reach - The Rexing J1772 Extension Cable is the perfect accessory for increasing the reach of your EV charging. Compatible with Level 1 and 2 chargers with J1772 connectors, this extension cord offers greater flexibility for your charging needs.
  • 20 Amp With 40Ft - This extension cord supports up to 40 amp charging and comes with a heavy-duty 20ft outdoor cable, allowing you to charge your EV even from a distance.
  • Durable And Waterproof - Made of high-strength ABS plastic, this extension cord is stronger and more durable for long-term use. It also has an IP66 waterproof rating, allowing you to use it anytime and anywhere, even in wet weather conditions.
  • Improved Charging Performance - The inlet of the Rexing J1772 Extension Cable is silver-plated, providing superior conductivity and preventing overheating, ensuring safe and reliable charging for your electric vehicle.
  • Support - All Rexing products comes with an 18 month warranty. We stand behind the quality of our products, and this extension cord is no exception.
What's Included
  • Rexing J1772 Extension Charging Cable
  • Travel Case
  • User Manual
https://www.bestbuy.com/site/rexi.../6543370.p

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27 Comments

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Jan 15, 2024 6:31 AM
3.5K Comments
Joined Jul 2017
fintlewoodlewixJan 15, 2024 6:31 AM
3.5K Comments
Nice. I can use this. Price is better than whats on Amazon or Ebay. Maybe you can find something cheaper on Aliexpress, with a bit of digging. Maybe not.
2
Jan 15, 2024 1:37 PM
4.1K Comments
Joined Jun 2009
LeviathanUltimaJan 15, 2024 1:37 PM
4.1K Comments
Nice deal. Tempting, but was hopping this supports 40A. I don't want to have to change my charger settings ervrytime I use this.
Jan 15, 2024 2:44 PM
48 Comments
Joined Nov 2011
chezeaterJan 15, 2024 2:44 PM
48 Comments
This is a great deal at 50% off. All EV owners can use this, they just don't know it yet. Thx OP
Jan 15, 2024 2:52 PM
45 Comments
Joined Apr 2011
maccarooJan 15, 2024 2:52 PM
45 Comments
Buyer beware! This is only an extension cord, and does not include the actual charger with 120V household plug.
That basic backup charger is available on eBay, also $99.00
Only 16A at that low price tho.
I always keep one in the frunk 😁
6
Jan 15, 2024 4:40 PM
1.9K Comments
Joined Mar 2004
skull leaderJan 15, 2024 4:40 PM
1.9K Comments
Quote from LeviathanUltima View quoted comment :
Nice deal. Tempting, but was hopping this supports 40A. I don't want to have to change my charger settings ervrytime I use this.
Post says supports up to 40 amp which should be the minimum. Great price but not worth the risk if it can't. I also don't want to change my settings either.
Jan 15, 2024 5:31 PM
30 Comments
Joined Mar 2020
XMirusXJan 15, 2024 5:31 PM
30 Comments
Do you want to burn your house down? This is a good way to do it. THIS cable may be rated for additional load capacity, but, if the cable you're connecting to which is off of your charger isn't rated for the increased distance this adds, you can have major problems. I would stay away from any type of extension cords for EV chargers.
1
Jan 15, 2024 5:40 PM
212 Comments
Joined Jul 2017
mpp17Jan 15, 2024 5:40 PM
212 Comments
The EV dealership explicitly told us not to use any type of extension cords. Feel like this is too much risk.
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Jan 15, 2024 5:41 PM
74 Comments
Joined Apr 2017
MatthewSertaJan 15, 2024 5:41 PM
74 Comments
Quote from LeviathanUltima View quoted comment :
Nice deal. Tempting, but was hopping this supports 40A. I don't want to have to change my charger settings ervrytime I use this.
My charger supports 48 amp… what happens if you plug it in? It doesn't automatically derate?
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Jan 15, 2024 5:53 PM
7.7K Comments
Joined Oct 2014
firebirdude
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This user is an Expert in Home & Home Improvement
Jan 15, 2024 5:53 PM
7.7K Comments
The same Rexing? [amazon.com]

Because that dash camera was a pile of you know what.
Jan 15, 2024 5:56 PM
981 Comments
Joined Oct 2003
TacoJan 15, 2024 5:56 PM
981 Comments
Quote from XMirusX View quoted comment :
Do you want to burn your house down? This is a good way to do it. THIS cable may be rated for additional load capacity, but, if the cable you're connecting to which is off of your charger isn't rated for the increased distance this adds, you can have major problems. I would stay away from any type of extension cords for EV chargers.
I'm not seeing how this is relevant at all... the termination point of the previous wire is the same. The wire doesn't know that it is connected to more wire or a Buick...

If there is some sort of science I'm missing here, let me know.
4
Jan 15, 2024 6:01 PM
585 Comments
Joined Jan 2013
TerencePJan 15, 2024 6:01 PM
585 Comments
Quote from Taco View quoted comment :
I'm not seeing how this is relevant at all... the termination point of the previous wire is the same. The wire doesn't know that it is connected to more wire or a Buick...

If there is some sort of science I'm missing here, let me know.
Voltage drops as length increases if the gauge of the wire isn't increased, this could cause a device to increase the current to compensate for the voltage drop. The increased current would cause extra heat to be generated.
1
Jan 15, 2024 6:02 PM
5.3K Comments
Joined Dec 2009
SDSummerDayJan 15, 2024 6:02 PM
5.3K Comments
Quote from matfhewserta View quoted comment :
My charger supports 48 amp… what happens if you plug it in? It doesn't automatically derate?
not likely, they are not smart. remember the level 1/2 EV charger is literally just a light switch, it either opens the circuit, or close it.

the danger is that the wire gauge chart is a matrix to keep the heat under control, meaning certain gauge wire and pass certain amount of current at certain distance.

with, say 14 guage wire, you can pass 8.5 amp at 200 ft, or 11 amp at 50 ft.

so if you charger support 48 amp. it already take consideration of the length of the wire. ADD extension cord to that requires your to redo the calculation and reduce max current accordingly, which those switch are not smart enough to do by themselves. but if you are aware of this, you can reduce the changing current and would be fine.

anyways... J1772 is essentially dead in the U.S. buying anything not NACS at this stage is just wasting money.
Last edited by seanleeforever January 15, 2024 at 10:06 AM.
1
3
Jan 15, 2024 6:23 PM
981 Comments
Joined Oct 2003
TacoJan 15, 2024 6:23 PM
981 Comments
Quote from TerenceP View quoted comment :
Voltage drops as length increases if the gauge of the wire isn't increased, this could cause a device to increase the current to compensate for the voltage drop. The increased current would cause extra heat to be generated.
Yes, exactly. The further the run, the more heat is generated, but at the end of the wire, not the beginning.
Jan 15, 2024 6:29 PM
3.5K Comments
Joined Jul 2017
fintlewoodlewixJan 15, 2024 6:29 PM
3.5K Comments
The charger on the wall is more than a light switch. The charger on the wall and the car both control the amperage. The car can ask for 48 and get send 16.
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Jan 15, 2024 6:37 PM
5.3K Comments
Joined Dec 2009
SDSummerDayJan 15, 2024 6:37 PM
5.3K Comments
Quote from fintlewoodlewix View quoted comment :
The charger on the wall is more than a light switch. The charger on the wall and the car both control the amperage. The car can ask for 48 and get send 16.

You would be surprised if you ever open one and check for your self.

the only thing charger controls is open or close using a relay, maybe with a fuse, if that's what you meant by controlling current. the entire AC charging and power control is with the car.

some tesla charger do talk to each other, and if you set it up correctly, they can signal to the car that two charger is sharing one 40A circuit, and the CAR then reduce the charging speed.
Last edited by seanleeforever January 15, 2024 at 10:44 AM.

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