I got two Tesla Powerwall 3s partly because I thought the software would be better. Instead, they are extremely buggy and the software has poor functionality. Many of the features are broken. The product feels like a prototype. Grid charging is broken and many of the features related to it don’t do what it says in the app. The batteries regularly do calibration cycles where they dump their entire charge and then stay at 0% charge level for at least 24 hours. When I first got them about a year and a half ago they would do that about once every two weeks, although they have reduced the frequency. I’ve also had issues with them turning on their heaters when it isn’t even cold and draining themselves. You get little to no insight into their operation and need to contact technical support for any little issue. They crash and do a hard reset and shut off the power every so often as well.