What this calculator does
The VinFast VF6 Charging Cost Calculator estimates how much electricity you will pay to charge your VinFast VF6 electric SUV. It accounts for the battery capacity, the percentage of charge you add, your local electricity price, and real-world charging losses so the figure reflects what actually shows up on your bill.
How to use it
Enter your battery capacity in kWh (the VF6 Eco has roughly a 59.6 kWh usable pack), your electricity price per kWh, the charge level you start at, the level you want to reach, and a charging efficiency percentage. AC home charging is typically 85–92% efficient. Press calculate to see the cost plus a breakdown of energy added to the pack and energy drawn from the grid.
The formula explained
First we find the useful energy added to the battery: battery kWh × (target% − start%) / 100. Because some energy is lost as heat during charging, we divide that by the efficiency fraction to get the energy actually pulled from the grid. Multiplying grid energy by the price per kWh gives the total cost.
$$\text{Cost} = \frac{\text{Battery (kWh)} \times \dfrac{\text{Target \%} - \text{Start \%}}{100}}{\dfrac{\text{Efficiency \%}}{100}} \times \text{Price (\$/kWh)}$$
Worked example
Charging a 59.6 kWh VF6 from 20% to 80% at $0.17/kWh with 90% efficiency: charge added = 60%, useful energy = \(59.6 \times 0.60 = 35.76\) kWh. Grid energy = \(35.76 \div 0.90 = 39.733\) kWh. Cost = \(39.733 \times \$0.17 \approx\) $6.75.
FAQ
Why include charging efficiency? Not all power from the wall reaches the battery — chargers and the onboard system lose a little as heat, so you pay for more kWh than the pack gains.
What efficiency should I use? 85–92% for home AC charging is a good default; DC fast charging can be similar but stations may price by the minute.
Does this work for other EVs? Yes — just change the battery capacity to match any vehicle.
