Drove home yesterday with no warnings. Plugged the car with the home charger. This morning wife unhooks the charger, notices battery is fully charged, then car goes haywire. Warning signs pop up to pull over, battery indicator goes to 0 and cannot even plug in the charger cable. From what I've read on the forums it sounds like the 12v battery has gone dead. Service will take one week, otherwise I have a brick in the garage. Question: where can I purchase a 12v battery for Tesla Model X p100? Tesla or any retailer?