Shutting off batteries at a certain percentage charge?

[h2ofun]

Since I am playing with my setup with solar, batteries and a generator, trying to see how to make things work with the least amount of hand holding since I am finding out my system is so complex, things do not work as I was thinking, or hoping.

Now, if tesla had a 400 amp gateway, my issues go away, but, ...

Is there any way to program my gateway/batteries so if they hit a certain level, lets say 20%, they would turn off. If I lose power, and I cannot get enough solar to charge, the batteries now I believe drain to 0, then my generator kicks in. But, am under the impression to then get the batteries charging again may not be easy?
I do not want to learn this process too if I can avoid it.

 

[jjrandorin]

When on grid, you set your reserve to the level you want them to stop at. When off grid, no there is no way to stop them from discharging that I am aware of.

 

[h2ofun]

When on grid, you set your reserve to the level you want them to stop at. When off grid, no there is no way to stop them from discharging that I am aware of.

Yep, this would be off grid

 

[sunwarriors]

Not that this helps, but Enphase has a setting labeled:

"Battery Shutdown Level" which, in an outage, will shutdown your battery to preserve 10% - 25% (user setable in 1% increments) of the battery to restart when the grid power is restored or solar is generating again.

Maybe Tesla has it somewhere or can add it.

 

[CrazyRabbit]

Hubitat Elevation™ | Local, Reliable, Fast and Private Home Automation has a Tesla app, perhaps automation would be possible with the ATS. Might have to use Raspberry PI to start generator if you don’t have a api for generator.
Gateway has a generic output, would be nice if it could be configured to start generator.

 

[Vines]

Since I am playing with my setup with solar, batteries and a generator, trying to see how to make things work with the least amount of hand holding since I am finding out my system is so complex, things do not work as I was thinking, or hoping.

Now, if tesla had a 400 amp gateway, my issues go away, but, ...

Is there any way to program my gateway/batteries so if they hit a certain level, lets say 20%, they would turn off. If I lose power, and I cannot get enough solar to charge, the batteries now I believe drain to 0, then my generator kicks in. But, am under the impression to then get the batteries charging again may not be easy?
I do not want to learn this process too if I can avoid it.

I would call Tesla support and ask them to do this, it might just be a setting that level 2 can deploy.

Basically you want the useable portion of the battery smaller, currently the Powerwall will stop outputting power with 1-2 kWh left in the unit. and you want to leave more like 2-4 kWh in each unit.

 

[Rocket_man]

Not that this helps, but Enphase has a setting labeled:

"Battery Shutdown Level" which, in an outage, will shutdown your battery to preserve 10% - 25% (user setable in 1% increments) of the battery to restart when the grid power is restored or solar is generating again.

Maybe Tesla has it somewhere or can add it.

I think the powerwalls have this reserve but it is not user settable.

 

[Redhill_qik]

I think the powerwalls have this reserve but it is not user settable.

There is a built in 5% level that it won't go below. This is the internal real level number and not the user number reported in the app. The app will show 0%, but there is still 5% or 675Wh left which should be good for at least 3 days waiting for the sun to come to recharge.