Skip to content
EV charging glossary

Units of measurement

kWh

Also called kilowatt-hour · kW h

A kilowatt-hour, or kWh, is a unit of energy equal to using or delivering one kilowatt of power for one hour.

EV battery capacity and charging-session energy are commonly stated in kWh. A charger delivering a constant 50 kW for 30 minutes transfers 25 kWh of energy, ignoring losses.

The same 25 kWh could be delivered more slowly at lower power over a longer period. Electricity tariffs are usually expressed as a price per kWh, while the charger or connection rating is stated in kW.

L

Read more Site capacity check

Related terms

kW

Battery capacity

Cost per kWh
Browse the full glossary Interactive periodic table

Get in touch

Ready to talk through your project?

Tell us what you're building and our engineers will help you scope the fastest, lowest-risk route to market. A conversation directly with the people who design the charging modules.

Your enquiry is sent directly to the Versinetic engineering team. We do not share your information with third parties. By submitting this form you agree to our Privacy Policy.