DC fast charging speed depends on your vehicle's maximum charging rate, battery state, and charger capability.
With a 150 kW charger, most EVs add 100-200 miles in 30 minutes. Actual range depends on vehicle efficiency (miles per kWh) and charging curve.
EVs charge fastest from 10-50%, slower from 50-80%, and very slow above 80%. Peak charging rates are only sustained for a portion of the session.
Tesla Model 3: ~180 miles in 30 min, Ford Mustang Mach-E: ~160 miles, Hyundai Ioniq 5: ~200 miles. Results vary by battery temperature and state of charge.