NHTSA Complaint #11419435 — 2018 TESLA MODEL 3

My car was parked and was charging in our garage when it suddenly shut off. I got into the car to get something, but noticed the car's computer screen did not light up. I tried to open the glove box and it also would not open. When I tried to open the car door button, it also would not open the door while I was still inside. I got out of the car using the manual car handle and realized the charger would not unplug from the car either. I was very scared that the car was going to burn because the battery was charging at the time and everything suddenly happened. In addition, the backseat doors do not have a manual car handle to open the door. In an event of an emergency and the power shuts off, how are passengers sitting in the backseat going to escape from the vehicle??? The cause was due to a 12v battery malfunction.