Your EV's Battery Is Big Enough To Run Your House — Here's What Stops Most People
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Most electric-vehicle batteries hold far more capacity than a standard home battery, but turning a car into a whole-home backup system remains complicated and costly. Automakers and charger makers must support bidirectional operation, and the setup requires a bidirectional charger with DC-to-AC inverter hardware plus an islanding or transfer switch, since a typical charging connection does not run in reverse. Capacity in kilowatt-hours sets runtime, while power output in kilowatts determines which appliances can run simultaneously, and the system must also absorb startup surges from air-conditioners and refrigerators. The article distinguishes vehicle-to-home (V2H) whole-house power from vehicle-to-load (V2L), which only runs individual devices. The takeaway is that battery size alone is not the barrier; compatibility and hardware costs are. What to watch next is how quickly bidirectional chargers and V2H-capable models reach mainstream pricing.
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