BatteryEV Glossary
What is kWh (Kilowatt-hour)?
Unit of energy storage — measures how much electricity your EV battery can hold.
A kilowatt-hour (kWh) is a unit of energy equal to 1,000 watts of power used for one hour. For EVs, it indicates battery capacity. A 40 kWh battery stores 40 units of electricity — enough for roughly 250-300 km of driving in most EVs. Bigger kWh = more range, higher price, heavier battery.