First public DCFC experience

[RedStallion]

It uses the MAC address from the car, as well as the vin. GM would provide the MAC address to EVG, so the setup was not needed. With everyone else, it reads the MAC address on that first charge.

FYI, within the app you can turn off the Autocharge. I sold an EV that had this, and removed that car from my EVGO account.

The MAC address can be easily spoofed, and VIN stolen. That's just waiting to be hacked. I think they need public key encryption, using signed messages to communicate between the car and the charger. Ford server can be a certificate authority. They shouldn't invent weaker protection when the industry standards are already in existence.

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[AZBill]

The MAC address can be easily spoofed, and VIN stolen. That's just waiting to be hacked. I think they need public key encryption, using signed messages to communicate between the car and the charger. Ford server can be a certificate authority. They shouldn't invent weaker protection when the industry standards are already in existence.

Here is a good description of how it differs from P&C (ISO15118), this is an older standard (OCPP) that did not use certificates (ISO15118). I am not trying to say it is great for security, but even if someone started hacking your account it would be easy to shut it off and file a claim with your credit card company. It is not like someone could steal many hundreds of dollars charging a car. This old protocol does not involve third party billing, it is direct through EVGO or Tesla.

https://www.linkedin.com/pulse/secu...harging-comparison-autocharge-christian-hahn/

 

[mkhuffman]

We have plans to put in a few in NNM over the next 12 months. Just pulling together private investors now.

So can you actually make money putting in a DCFC pump? It seems like it would take forever to break even.

 

[Logal727]

The MAC address can be easily spoofed, and VIN stolen. That's just waiting to be hacked. I think they need public key encryption, using signed messages to communicate between the car and the charger. Ford server can be a certificate authority. They shouldn't invent weaker protection when the industry standards are already in existence.

Plug and Charge already has public key encryption

 

[dtbaker61]

So can you actually make money putting in a DCFC pump? It seems like it would take forever to break even.

If you can qualify for Fed Grants, and talk the local utility into a reasonable 'special rate' unlike the typical commercial rate for 3-phase 480v which is usually demand charge for peak load plus use.... AND get several charges per day.... it pans out.

I am pushing the CEO to design with Freewire chargers, which only require split phase 240v and avoid load demand charges since they buffer up energy to internal battery at a nice grid-friendly 27kW and split it out at a full 200kW. They can't handle more than a couple back-to-back without exhausting battery and dropping to 27kW.... but that's probably ok for remote rural locations.

 

[PA Bob]

Ah. That is confusing.

The Blue Oval charge network includes EVgo. But plug and charge is only EA. And the FordPass complimentary 250 kWh is only EA. And EVgo's plug and charge feature is Autocharge+.

Got it.

this is a nice succinct summary. I will miss you MachNCheese. I just tried my first public charge. I thought i was getting plug and charge. Alas it was EVGo so I got plug and mug (highway robbery).

 

[mkhuffman]

I will miss you MachNCheese.

I think you mean @scoopman
https://www.macheforum.com/site/threads/video-saying-good-bye-to-mach-n-cheese.29344/

 

[scoopman]

I think you mean @scoopman
https://www.macheforum.com/site/threads/video-saying-good-bye-to-mach-n-cheese.29344/

My former pony car will miss you too ? but we're still going on EV adventures with a red car if you're interested.

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