104 kWh EV Battery Charging Time on 120 kW (Supercharger V2 / DC Rapid)
Real-world charging duration (10–80%, 20–80%, and 0–100%), range added per hour, charging cost, and electrical circuit breaker sizing.
10% to 80% Charge Time43 min20%–80%: 37 min
Full 0% to 100% Time1h 14mGrid Energy: 113.0 kWh
Driving Range Added / Hour+630.4 km/h+391.7 miles / hour
Circuit Breaker Required225A (NEC)173.2A @ 400V (3P)
Charging Time & Electrical Specification Table (104 kWh @ 120 kW)
| EV Battery Usable Capacity | 104 kWh |
| Charger Output Rating | 120 kW (Supercharger V2 / DC Rapid) |
| 10% to 80% Charging Time (Daily / Highway Optimal) | 43 min (0.72 hours) |
| 20% to 80% Charging Time | 37 min (0.62 hours) |
| 0% to 100% Full Charge Time (with BMS Tapering) | 1h 14m (1.24 hours) |
| Estimated Full Charge Cost (US / Germany / Sweden) | $19.77 (US) · €38.42 (DE) · 186.45 kr (SE) |
| Continuous Current Draw & Breaker | 173.2 A @ 400V (3-Phase) → 225A NEC / 175A IEC Breaker |
Frequently Asked Questions
How long does it take to charge a 104 kWh EV battery at 120 kW?
Charging a 104 kWh electric vehicle battery from 10% to 80% on a 120 kW (Supercharger V2 / DC Rapid) takes approximately 43 min (or 1h 14m for a full 0% to 100% charge including charger efficiency and BMS tapering).
What breaker size is required for a 120 kW EV charger?
At 400V (3-Phase), a 120 kW charger draws 173.2A continuously, requiring a 225A breaker under US NEC 625.41 (125% continuous load rule) or a 175A breaker under European IEC/NEK standards.
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