OK, so I have a Model 3 that has been sitting for over one year. The main battery has drained and will not wake up. The app will not connect to the car. Tesla "mothership" can't connect too. I have called the mobile service and the technician said his computer won't connect to the car too, because he thinks the main battery has shut down to protect itself and several modules won't work because they are powered by the main battery. He cauld not even run diagnostics. When a charger is plugged in I get a "charging stopped" message. So my question is how to wake up the main battery? Can I charge the battery by connecting a DC charger directly to the battery terminals?