Electric cars in traffic: how much battery power is lost?

Traffic jams worry owners of electric vehicles in Indonesia's major cities. Unlike conventional cars, electric vehicles don't guzzle energy when fully stopped, but auxiliary systems still draw power. Battery drain in congestion typically ranges from 1 to 5 percent per hour.

Traffic congestion often haunts drivers in Indonesia, especially in big cities like Jakarta. For the growing number of electric vehicle owners, a common question is how much battery power drains during prolonged jams.

Unlike gasoline or diesel cars that keep burning fuel with the engine idling, electric vehicles consume energy only as needed. When fully stopped, the main draw comes from systems like air conditioning, entertainment, lights, and onboard computers. In stop-and-go traffic, battery depletion usually ranges from 1 to 5 percent per hour, according to Slashgear.

The biggest factor is AC use; setting it to low temperatures with high fan speed can push consumption toward 5 percent per hour, particularly in vehicles with smaller batteries. Other contributors include infotainment systems, device charging, and exterior lights, though these are relatively minor. Overall, this is far more efficient than conventional cars.

Regenerative braking technology recaptures energy when releasing the accelerator or braking, though its impact is limited at low speeds. With proper charging planning, traffic jams pose no serious threat to daily electric vehicle range.

Mga Kaugnay na Artikulo

Evening highway traffic jam outside Jakarta with police managing Lebaran return flow via contraflows.
Larawang ginawa ng AI

15 percent of Lebaran return vehicles remain outside Jakarta

Iniulat ng AI Larawang ginawa ng AI

Indonesia's Traffic Corps estimates just 15 percent of Lebaran 2026 return vehicles remain outside Jakarta as of Saturday night. The peak return flow has passed, with traffic managed through measures like one-way systems and contraflows.

EV batteries can now store excess power and feed it back when needed. Munich engineer Moritz Rupp calls it obvious, as the expensive batteries otherwise sit idle for 23 hours a day. The technology allows use for home electricity or selling to the grid.

Iniulat ng AI

A new study modeling the San Francisco Bay Area concludes that vehicle-to-grid technology from electric vehicles can stabilize the power grid but requires proactive infrastructure upgrades. Researchers project rising EV and solar adoption will strain the system without new transformers and transmission lines. The findings emphasize combining V2G with grid improvements to support renewables.

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