The calculation depends on the relationship between your EV's battery size (kWh) and the power output of the charger (kW). For example, charging a 75 kWh battery from 20% to 80% with a Level 2 (7. 4 kW) charger may take around 6 hours. Using a DC fast charger (50–150 kW) can reduce that time. . Get instant charging time estimates based on your battery capacity (kWh), charger power, and current battery level. Whether you need to know how long it takes to charge a 75 kWh battery at 7kW or calculate charging time for a 50kW DC fast charger, our EV charging speed calculator provides accurate. . There is such a difference, in fact, that a Porsche Taycan with the largest battery plugged into a wall socket at home might take an entire day to charge, while that same battery can be filled to 80% in about 22 minutes from the fastest type of public charger.
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