LVL 1 Charging with EV Extension Cable - "Charge Error"

CaptainPositivity

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Hey everyone,


I'm currently dealing with an interesting predicament and looking for some advise and or perhaps a solution to test.

Our Mach E lives outside in the driveway and our landlords have let us use a 5-20 outlet in their garage to charge our - the issue is that the plug is roughly about 50ft away from where our car sits which requires us to use some form of extension to get by.

I have tried a few solutions so far to varying degrees of success and one in particular which refused to work outright despite being a seemingly best-case outcome.


1. We started last weekend with a 10-gauge extension cord rated for 15amps 1900w (high quality) and our level 1/2 charger sitting outside. This solution worked, but I only got about 1.2kwh max. ( We live in BC and it was approx -5 C outside - but after 14 hours of charging there was no noticeable heat from the plug, cord, outlet, etc which was good to see. The issue here was that you're not really supposed to use an extension cord, and our charger is rated for up to 16 amps which would allow for roughly 40% faster charging speed than what we were seeing at 1.2kwh roughly 11 amps....

(our charger)
Ford Mustang Mach-E LVL 1 Charging with EV Extension Cable - "Charge Error" 1739304960123-m




2. We bought an EV extension cable from EVDance on Amazon. This seemed like a great idea because then the charger could be plugged into the wall so it would reduce fire risk, but the connection was also an J1772 to J1772 which is protected against weather and dust, unlike a regular extension cord end. Most importantly because the charger itself was connected to the 5-20 port and the cord was rated for 31 amps we had hoped that this would allow us to charge at 16 amps 120v.

(current cord)

Ford Mustang Mach-E LVL 1 Charging with EV Extension Cable - "Charge Error" 1739304852611-fv


The problem is that despite option 2 seemingly being the better option, and it working for other people, our car immediately rejects the cord upon plugging it in and flashes orange. It didn't work once. This has me questioning whether the cord I bought was perhaps faulty/defective from the factory.

I have since bought another cord which will be here in a few days to test this theory, but I was wondering if there was any way of looking for faults in the charger plug for example to identify why it would not be working. I doubt some piece of debris is causing it to fail, and the charger itself is not detecting any issues with the setup.

(New Cord)

Ford Mustang Mach-E LVL 1 Charging with EV Extension Cable - "Charge Error" 1739304825901-3n



So all in all - looking for some advice on the best path forward for the time being we are stuck needing a 50ft solution. And our goal is to get the full 16 amps out of this 5-20 outlet to help eliminate about 3-4 hours from our charging. Curious if anyone else has had similar issues in the past with extensions and the car citing a charging error.

Thanks

Ford Mustang Mach-E LVL 1 Charging with EV Extension Cable - "Charge Error" 1739304937159-vj
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Mach-Lee

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You're dealing with no-name brands from China. I wouldn't expect a flawless performance. Many of these products are not fully J1772 compatible, have defects that cause charging issues, or at worst, a fire. Thou shalt not use an extension cord to charge an EV. None of that stuff is going to be certified. If the Mach-E detects an unsafe condition (such as an excessive voltage drop from using extension cords), charging will fail.

The maximum charge rate on 120V is limited to 12 amps, doesn't matter what EVSE you get.
 
 







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