What is the VinFast VF6 Charging Time Calculator?
This tool estimates how long it takes to charge a VinFast VF6 electric SUV from one battery level to another. The VF6 is sold in markets including Vietnam, the US and Europe, and is offered with a usable battery of roughly 59.6 kWh (Plus trim). Charging speed depends on your battery size, how much charge you want to add, the power of your charger, and real-world charging losses, so this calculator combines all four into a simple time estimate.
How to use it
Enter your battery capacity in kWh, your current charge level and your target charge level as percentages, the rated power of your charger in kW, and an efficiency figure. AC home charging typically runs at 85–92% efficiency; DC fast charging is usually a bit higher but tapers near full. The result shows the total time in hours and minutes plus the energy that must be delivered.
The formula explained
The energy to add is \(E = C \times (S_t - S_0) / 100\), where C is battery capacity and \(S_t\), \(S_0\) are the target and start states of charge. Charging time is then \(t = E / (P \times \eta)\), dividing the energy by the effective delivered power (charger power \(P\) multiplied by efficiency \(\eta\)).
$$t = \frac{\text{Battery (kWh)} \times \dfrac{\text{Target (\%)} - \text{Start (\%)}}{100}}{\text{Charger (kW)} \times \dfrac{\text{Efficiency (\%)}}{100}}$$where \(t\) = charging time (hours).
Worked example
For a 59.6 kWh battery charging from 20% to 80% on an 11 kW home charger at 90% efficiency: energy = $$59.6 \times (80 - 20)/100 = 35.76 \text{ kWh}.$$ Time = $$\frac{35.76}{11 \times 0.90} = \frac{35.76}{9.9} \approx 3.61 \text{ hours},$$ or about 3 hours 37 minutes.
FAQ
Why is real charging slower than the math? Batteries reduce charge speed as they approach 100% (the charging curve tapers), so DC fast-charge times above 80% are longer than a flat calculation predicts.
What efficiency should I use? Use about 88–90% for AC home charging and 92–95% for DC fast charging as a rough guide.
Is this an official VinFast figure? No. It is an independent estimate; actual times vary with temperature, charger and vehicle conditions.
