11kW vs 22kW EV Charger — Which Is Right for You?
Choosing between 11 kW and 22 kW matters more than you think — but the answer often isn't what people expect. Most EVs can't use 22 kW anyway. This guide explains the difference and helps you make the right decision.
Your EV's onboard charger (OBC) is the component inside your car that converts AC power from the wallbox into DC to charge the battery. The OBC has a maximum power rating — if your EV's OBC is rated at 11 kW, a 22 kW wallbox will only charge at 11 kW. The car limits the speed, not the charger. This is why most home users don't need a 22 kW wallbox.
11 kW vs 22 kW — Full Comparison
| Feature | 11 kW Charger | 22 kW Charger |
|---|---|---|
| Supply required | Three-phase 16A | Three-phase 32A |
| Charging speed | ~75 km range added per hour | ~150 km range added per hour |
| Full charge time (75 kWh EV) | ~7 hours | ~3.5 hours (if EV supports it) |
| Compatible EVs | All three-phase EVs | Only EVs with 22 kW OBC (minority) |
| Charger cost | Lower | Higher |
| Installation cost | Standard three-phase | Requires 32A supply — may need upgrade |
| Best for | Home, most EVs, overnight charging | Business, future-proofing, Renault EVs |
Which Power Rating Does Your EV Support?
Check your EV's maximum AC charging speed below. If your car's onboard charger is limited to 11 kW, a 22 kW wallbox provides no benefit.
| EV Model | Max AC Charge | Recommended |
|---|---|---|
| Tesla Model 3 / Y | 11 kW | 11 kW |
| Volkswagen ID.3 / ID.4 | 11 kW | 11 kW |
| BMW i4 / iX | 11 kW | 11 kW |
| Renault Zoe (2020+) | 22 kW | 22 kW |
| Renault Megane E-Tech | 22 kW | 22 kW |
| Hyundai IONIQ 5 / 6 | 11 kW | 11 kW |
| Kia EV6 / EV9 | 11 kW | 11 kW |
| Mercedes EQS / EQE | 22 kW | 22 kW |
| Peugeot e-208 / e-2008 | 7.4 kW | 7.4 kW |
| Audi Q4 e-tron | 11 kW | 11 kW |
| Volvo EX40 / EC40 | 11 kW | 11 kW |
Not sure about your EV? Tell us the model when you submit the form — we'll advise the correct charger.
Make the Right Decision
✅ Choose 11 kW if…
- Your EV's onboard charger is rated at 11 kW
- You charge mainly at home overnight
- You want the most cost-effective solution
- You have a standard three-phase 16A supply
⚡ Choose 22 kW if…
- Your EV supports 22 kW (e.g. Renault Zoe, Mercedes EQS)
- You want to future-proof for your next EV
- Business charger — maximum versatility needed
- You need to charge multiple EVs quickly
Three-Phase EV Chargers We Install
We install all major brands in both 11 kW and 22 kW versions — supply and fit, with full documentation and warranty.
Single-Phase
For EVs with single-phase OBC or properties without three-phase supply. Charges most EVs overnight.
Three-Phase
Ideal for the majority of modern EVs. Fast overnight charge, widely compatible, three-phase supply needed.
Three-Phase Max
Maximum AC speed for EVs that support it. Business use and future-proofing. Needs 32A three-phase supply.
What Our Clients Say
They advised me to go for 11 kW instead of 22 kW — explained that my Model Y only uses 11 kW anyway. Saved me money. Honest and professional.
Renault Zoe owner — they correctly recommended 22 kW. Charges in 3.5 hours instead of overnight. Exactly the right advice for my specific car.
Office car park with 4 x 22 kW chargers. Future-proofed for whatever vehicles our fleet transitions to. Great installation, OCPP working perfectly.
Frequently Asked Questions
Get a Free Quote
Fill in the form — a specialist will contact you within 5 minutes and help you choose the right solution.
- ✓ Free consultation and quote
- ✓ Installation for homes, apartments and businesses
- ✓ 7.4 kW, 11 kW and 22 kW wallbox units
- ✓ Full electrical installation and documentation
- ✓ 6-month warranty on all work
⚡ Urgent? Write "URGENT" in the message field and we will do our best to arrive at the earliest available date.