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11kW EV Chargers Explained: Do You Need Three-Phase?
11kW charging is roughly 50% faster than 7kW — but only worth it with three-phase supply and a compatible EV. Here’s the honest breakdown.
WaterFuelAndSolarEnergy.com Editorial Team Updated January 2025 6 min read
An 11kW charger roughly halves charge time versus 7kW — but only on three-phase supply and only if your EV’s onboard charger accepts 11kW. All three conditions must be true for it to matter.
Overnight charging comparison (planning guide)
| Charger | Supply | 20–80% time (60kWh car) | Approx range per hour |
|---|---|---|---|
| 7 kW | Single-phase | ~6.5 hrs | 40–50 km/h |
| 11 kW | Three-phase | ~4.2 hrs | 60–75 km/h |
| 22 kW | Three-phase | ~2.1 hrs | 120 km/h |
Before you pay for three-phase
- Confirm your car supports 11kW AC (many don’t — check the onboard charger)
- Get an electrician to check your supply type and capacity
- Price the three-phase upgrade against a simple 7kW charger