Why would an electric car need a separate 12v battery like an ICE powered vehicle?

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In reference to [this post. ](https://www.theverge.com/2024/6/21/24183439/tesla-model-y-arizona-toddler-trapped-rescued)

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Anonymous 0 Comments

Everyone talking about it being cheaper to run radios and stuff but Im pretty sure DOT requires cars to have emergency flashers that run even if all other systems have failed.

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