> He later learned a separate 12-volt battery in his Tesla Model Y died after he opened the door, and he said he was trapped inside on a 100º day for 20 minutes. The low-voltage battery powers what’s inside a Tesla including the doors, computer display, and windows.

I won't speak to the usability of the "emergency latch". But, it certainly sounds odd that there's a separate low-voltage battery in addition to the main battery.