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Yay! We tweeted Elon asking for this feature last year and he said it was coming. Glad to see it. Looks like we need our Powerwall firmware updated and will only support our Model Y currently but we can definitely use this feature. It was in the 70s on Saturday but we've gotten over 16" of snow since Sunday and our Powerwalls charged from the grid last night thanks to Storm Watch.
.... It was in the 70s on Saturday but we've gotten over 16" of snow since Sunday and our Powerwalls charged from the grid last night thanks to Storm Watch.
I’m also interested to see how this will work. Sentry mode does this well pretty now since I tell it to not come on while it’s in the garage at home so I imagine it will be something similar as opposed to requiring a HPWC for this to work.I'm curious how the car knows it's connected to a PW-backed circuit? Is it a combination of being on the same account and the GPS saying the car is at the "Home" location? What about households with cars on different accounts?
It may be a security consideration that they aren't exposing this to the mobile app. The only API I know of is the one for the mobile app, and the last version I looked at does not have a way of setting the charge current. Given the way they're rolling out support to different car models at different times, I'm guessing it is going to be the car controlling the current. This does imply that it should work just fine using the mobile adapter (or potentially even non-Tesla EVSE).It would be a shame if Tesla designed this feature to have the car set the “charge current” instead of the mothership. Being able to remotely, through the mothership API, set charge current has other uses, including being able to match instantaneous solar production to avoid the PW roundtrip. Has anyone seen an API command for setting “charge current”?
It may be a security consideration that they aren't exposing this to the mobile app.
I also don't know what kind of wear switching charge current frequently puts on the car.