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Arizona toddler rescued after getting trapped in a Tesla with a dead battery | The Model Y’s 12-volt battery, which powers things like the doors and windows, died (www.theverge.com)

submitted 6 months ago by ForgottenFlux@lemmy.world to c/technology@lemmy.world

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[-] ramenshaman@lemmy.world 9 points 6 months ago

Really interesting design decision. Was the main battery also dead? I'm guessing not. There's a step-down converter under the rear seat that outputs 12-16 volts, Tesla could probably have fairly easily set the car up to power the doors from that when the auxiliary 12V battery dies.

[-] Venator@lemmy.nz 10 points 6 months ago

Probably would still need the 12V battery to have enough charge to close the connection to the high voltage battery that would power the step down converter.

But yeah it seems dumb to me that most EVs don't keep the 12V battery topped up from the high voltage battery somehow while the car is parked, but I'm not an electrical engineer ¯\_(ツ)_/¯

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[-] MoistCircuits0698@lemm.ee 8 points 6 months ago

This is why I bought an EV with mechanical doors.

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this post was submitted on 24 Jun 2024

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