For Educators · EV Range & Efficiency
EV Range & Efficiency for a home battery
Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a home battery live below — adjust the inputs and watch it respond, right in your browser.
EV Range & EfficiencyLive
why speed kills range
Controls
Presets
An electric car's range is its battery divided by its energy use per kilometer. At low speed rolling resistance dominates; at highway speed aerodynamic drag — which grows with the square of speed — takes over, so consumption climbs steeply. That is why an EV goes much farther in the city than on the motorway, the opposite of a gasoline car.
Data Inspector
Consumption54.7 kWh/100km
Range110 km
Efficiency1.8 km/kWh
Governing equation
Reading this result: Around 100 km/h drag is overtaking rolling resistance, so every extra 10 km/h now costs disproportionately more energy, holding range near 110 km.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
Also for:StudentsResearchersEngineersHobbyists & MakersK-12 StudentsFirst RespondersGeneral version →
More with EV Range & Efficiency
EV Range & Efficiency for a solar farmEV Range & Efficiency for a wind turbineEV Range & Efficiency for an EV chargerEV Range & Efficiency for a power gridEV Range & Efficiency for a heat pumpEV Range & Efficiency for a gas turbineEV Range & Efficiency for a hydro damEV Range & Efficiency for a nuclear plant
Frequently asked questions
- Is this good for educators?
- Yes — this version of "EV Range & Efficiency for a home battery" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.