My PowerWalls stopped getting charged/discharged almost three months ago. All I see is that the power flow monitor shows no electricity flow of any kind.
I called Tesla Support 7 times as of today. First time I was told that it was antenna that they are replacing and that they are waiting on the parts. They said they would have a part in a few days; nothing happened. I called again to be told that the parts are arriving on the 21st of March and that they would call me to schedule the repair. I waited a whole month and called on the 23id. Still no parts; was told that they are coming in on the next Friday. Called again a few days after the mentioned Friday; they told me the part is coming in on Monday. Waited: nothing. Called again last week to be told that the part is definitely coming in on Friday the 12th of April and that they would call me on the 15th to schedule the fix. Nothing, again. Just called in (17th of April) and was told that the parts are not in and that they have no idea when they may get them. Unbelievable.
I am a Tesla fan. I have Teslas S and X. I installed PowerWalls as soon as they became available. Hugely disappointed in the company. The Support really does not care. What is more troubling is that they have no idea if and when they can repair the PowerWall that is still under warranty.
Dream on about going off the grid. Clearly impossible!