Part II. A 5 week update on our off grid DIY powerwall using a salvaged battery from a wrecked Tesla Model S (85Kwhr). We've been running the snot out of this puppy and it hasn't laid down yet! Thank you UofL student Collie Crawford for coming over to hack on the pi with me this weekend. Also, thank you Jack Rickard @ EVTV.me for providing 90% of what it took to do this project. This video shows my solar panels and the raspberry pi GUI that I programmed in C to monitor the battery.