EV Charging Time: Battery Gap Divided by Charger Power
Charging time is just energy divided by power, with one catch: the rate tapers near full. The straight-line estimate is still the right planning start.
What is the EV Charging Time Calculator?
Charging time depends on how much energy the battery needs and how fast the charger delivers it. This calculator divides the energy gap by charger power, which gives a useful estimate. Real charging slows near full, so the last stretch takes longer than this straight-line figure suggests.
How to use it
- Enter the battery size in kWh.
- Enter current and target charge percentages.
- Enter charger power and click Calculate Charging Time.
Worked example
A 60 kWh battery charging from 20 to 80 percent needs 36 kWh, which takes about 43 minutes at 50 kW.
How long does a 60 kWh EV take from 20 to 80 percent at 50 kW?
About 43 minutes, for 36 kWh of energy at 50 kW.
Frequently asked questions
Why does the last 20 percent take longer?
Batteries taper their charge rate near full to protect battery health, so 80 to 100 percent is slower per kWh.
Is charger power the only factor?
No. The car's own maximum charge rate, temperature, and shared chargers also limit the real speed.