EV Charging Time Calculator
Estimate electric-vehicle charging time, wall energy, charging cost, current and range added from battery and charger inputs.
Default project preview
7.64 hours
Battery energy added
45 kWh
Wall energy
50 kWh
Range added
180 miles
Approximate current
30 A
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Battery energy = capacity × charge-percent increase. Wall energy = battery energy ÷ efficiency. Time = wall energy ÷ charger power × taper allowance.
FAQ
EV Charging Time Calculator questions
Why is wall energy greater than battery energy?+
Charging electronics, battery conditioning and other losses mean more energy is drawn from the supply than is stored.
Why does charging slow near a high state of charge?+
Many vehicles reduce charging power as the battery fills to control heat and protect battery health.
Does charger nameplate power guarantee that rate?+
No. The vehicle onboard charger, supply circuit, temperature and charging session can limit actual power.