Charging time and cost

Set the battery, charger, and tariff you actually use. The session updates while you adjust it.

This is a linear AC estimate. DC rapid charging slows as the battery fills.

Your charging session

AC charging model

Battery state

20% to 80%

60% added

Starting charge, 20% Energy being added, 60%

Starting charge 20% Target charge 80%

Energy from the wall 19.8 kWh

Into battery 18.0 kWh Estimated losses 1.8 kWh

Approximate time: 2 hr 41 min
From the wall: 19.8 kWh
Session cost: $4.95

Set the real limits.

Charging speed is controlled by the lower limit: the power available from the charger or the power accepted by the car.

Start with a vehicle

Published entry: 30 or 43.2 kWh. The calculator uses 30 kWh as a starting point. Confirm whether your version quotes gross or usable capacity.

Charging power

Choose a common AC reference or enter a custom limit.

7.4 kW

Custom charging power

Use the lower of the charger rating and the car's AC limit.

Battery capacity used

kWh

Prefer usable capacity; manufacturer entries may quote gross capacity. Electricity price

USD/kWh

Use your all-in home or public charging tariff. Charging losses

percent

Ten percent is a reasonable AC planning assumption. Currency Only the displayed currency changes. Enter a matching local tariff.

Which power should you use?

A charger rating is a ceiling, not a promise. Your cable, electrical supply, onboard charger, temperature, and battery controls can all lower the real rate.

2.3 kW

Portable supply

Slow household charging where local installation and safety rules permit it.

7.4 kW

Single-phase home unit

A common reference for overnight home charging.

11 kW

Three-phase AC

Common on modern EVs where the site and onboard charger support it.

DC rapid

Use a tested charging curve

For rapid charging, use a published 10% to 80% time rather than this linear model.