Why Do Electric Cars Still Use 12-Volt Batteries?

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Why Do Electric Cars Still Use 12-Volt Batteries?
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Your electric car or plug-in hybrid is propelled by a sophisticated lithium-ion battery, but you'll probably also find a lead-acid 12-volt battery in there somewhere. Don't throw away your jumper cables just yet.

. But powering up the stereo does not require 800 volts. Nor would you want that coursing through every circuit in the car, for a variety of reasons. Safety, for one.

uses a 14.4-kWh battery pack good for 37 miles of EPA-rated range, but the whole thing powers up via an old-school lead-acid 12-volt bolted in the spare-tire well under the rear cargo floor.

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