Estimate how long an EV charge actually takes

A 150kW charger never delivers 150kW the whole session. Model the taper past 80% and the loss at the wall.

Tools used in this guide

EV charging time
Electricity cost calculator
Battery runtime calculator

The job

'20% to 80% in 30 minutes' is the marketing number — it's true only because both endpoints cheat. Below 20% you rarely arrive, above 80% charging slows hard. The honest question is kWh needed ÷ real average kW.

Battery, window, charger

Enter battery size (kWh), current and target %, charger kW and wall efficiency (~90% is typical). Toggle the 80% taper to see the true cost of 'just topping to 100%'.

Charging 20→80% of a 60kWh pack at 100kW is ~25 minutes at full speed; 80→100% can take nearly as long with taper on.
Price per kWh is optional — enter your tariff and the session cost comes out too.

Planning reality

The model assumes the rated kW holds flat until taper — real curves vary by car, temperature and station sharing. Treat the answer as a floor, not a promise: winter and shared stalls add time.