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One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
PSA: If your wall connector loses wifi, it'll just throw your charging schedules out the window and turn on/off sporadically. This is especially noteworthy if you have Time of Use billing :| SET THE TIMER ON THE CAR DIRECTLY!
or, use Home Assistant to handle your charging schedules.
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The SSID stops broadcasting after the unit is commissioned, unless you're using power sharing between multiple units. In that case the SSID is used for the units to communicate.
by commissioned you mean "connect it to your home wifi and let it talk to tesla"? (i won't do that) because it hasn't gone away after configuring the setup stuff (amps, etc)
One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
One thing I'm really scared of is EV charger software being modified by users, hackers or bugs to pull max power at times that don't suit the grid. In the UK, for example 10 million EVs all pulling 7kw would overwhelm the roughly 70GW potential of the grid. Even a million EVs charging at an inconvenient time could add a 7GW draw which is enough cause a problem.
It will first damage the batteries very fast, second, most users don't want to mess with that, they want to plug and play. So, on both counts your fears are misplaced.
Large ISP outages that affect millions of people are not uncommon on a decade by decade basis, and I suspect an uncomfortable number of UK EV chargers are in some way linked to eu-west-2.
[1] https://www.legislation.gov.uk/uksi/2021/1467/regulation/7/m...
Earlier quoted context omitted.
The SSID stops broadcasting after the unit is commissioned, unless you're using power sharing between multiple units. In that case the SSID is used for the units to communicate.
by commissioned you mean "connect it to your home wifi and let it talk to tesla"? (i won't do that) because it hasn't gone away after configuring the setup stuff (amps, etc)
Earlier quoted context omitted.
Eh, that’s a bad generalization. defense in depth is a thing and there are many cases where you’d want to protect against attackers with physical access
This isn't designed to stop attackers with physical access. This is designed to stop casual tinkerers and shade tree mechanics. You know what isn't vulnerable? A "dumb" offline charger. You know what doesn't make any money or turn the consumer into another product? A "dumb" offline charger. If it were about physical security, the suggested fix would be to remove the communication from the port entirely. Companies sho…
> If it were about physical security, the suggested fix would be to remove the communication from the port entirely.
You can’t charge without negotiating charging rates. Communication is a requirement. Every EV does this. Heck, every cell phone does this.
> Like drive by wire steering, or brakes. Nobody asked for these things and if you ask ANYONE who works on, builds, or actually enjoys cars the consensus is NOBODY wants it.
Every hybrid and EV for the past 20 years has brake by wire. That’s how regenerative braking works.
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I do as well with a NEMA?
I don’t think the mobile charger allows more than 32A continuous over NEMA, even on a 50A receptacle
When we moved to a new house, we bought a Tesla wall charger, and it indeed charges at higher amps, but I don't know if the extra speed has necessarily been worth it since we primarily charge the car overnight.