AC vs DC EV Charging: Everything You Need to Know
When you first switch to an electric vehicle (EV), you’ll likely encounter two types of charging — AC (alternating current) and DC (direct current). But what’s the difference between them, and how does it affect the way you charge your car?
Understanding how AC and DC charging work helps you make smarter decisions about home charging, public charging, and charging cable choices — saving you time and money in the long run.
Let’s break down everything you need to know about AC vs DC charging.
Looking for an EV cable? Check out our Type 2 EV Charging Cables compatible with all EV brands.
What Is AC Charging?
AC charging (alternating current) is the most common type of EV charging in the UK. It’s used for home chargers, workplace chargers, and many public charging points.
How It Works:
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The power from your home or the grid is supplied as alternating current (AC).
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Your car’s onboard charger converts that AC electricity into direct current (DC) to charge the battery.
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The conversion happens inside the vehicle, which is why AC charging is usually slower.
Typical Charging Speeds:
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3.6kW – 7.4kW (single-phase): Standard for most UK homes.
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11kW – 22kW (three-phase): Common at workplaces and public AC charge points.
AC charging is ideal for overnight charging — plug in your EV at home and wake up to a full battery.
What Is DC Charging?
DC charging (direct current) is designed for rapid and ultra-rapid charging — perfect for topping up your EV quickly during longer journeys.
How It Works:
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DC chargers convert AC power to DC before sending it directly into your EV’s battery.
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This bypasses the vehicle’s onboard charger, allowing much faster charging speeds.
Typical Charging Speeds:
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50kW – 100kW (rapid): Found at motorway service stations.
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150kW – 350kW (ultra-rapid): Used by premium networks such as IONITY, Gridserve, and Tesla Superchargers.
A typical 50kW rapid charger can recharge most EVs from 10% to 80% in around 40–60 minutes.
AC vs DC Charging: What’s the Difference?
| Feature | AC Charging | DC Charging |
|---|---|---|
| Speed | Slower (3.6kW–22kW) | Much faster (50kW–350kW) |
| Conversion | Inside the vehicle | Inside the charger |
| Best For | Home and workplace charging | Long-distance travel and quick top-ups |
| Connector Type | Type 2 | CCS (Combined Charging System) |
| Cable | Type 2 to Type 2 | Tethered to the charger |
| Cost per kWh | Lower (costs less) | Higher (rapid chargers cost more) |
In short:
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Use AC charging for regular, cost-effective charging at home or work.
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Use DC charging when you need a quick top-up on the go.
How Long Does It Take to Charge an EV?
Charging time depends on your vehicle’s battery size, charger power, and charging type.
Example charging times:
| Charger Type | Power Output | Approx. Time (0–100%) | Best For |
|---|---|---|---|
| 3.6 kW | Slow | 12–15 hours | Home (13A plug) |
| 7.4 kW | Fast | 6–8 hours | Home wall box |
| 11 kW | Fast | 5–6 hours | Workplace |
| 22 kW | Fast | 3–4 hours | Public AC |
| 50 kW+ | Rapid DC | 30–60 minutes (10–80%) | Motorway charging |
Most drivers rely on AC home charging overnight, using DC rapid chargers occasionally for long trips.
Which EV Cable Do You Need?
For AC charging, most UK electric vehicles use a Type 2 to Type 2 charging cable — the standard connector for Europe.
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Single-phase (7.4kW): Perfect for home wall boxes.
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Three-phase (22kW): Ideal for public and workplace chargers.
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Cable length: 7m and 10m are popular choices, offering flexibility without excess bulk.
Shop EVwired’s premium-quality Type 2 charging cables — designed for all UK and European EVs, with free delivery, 5-year warranty, and a free carry case included.
For DC charging, you won’t need your own cable — rapid chargers come tethered with a CCS plug.
Which Is Better — AC or DC Charging?
Neither is better — it simply depends on your needs.
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AC charging is cheaper, gentler on the battery, and perfect for regular overnight charging.
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DC charging is ideal for quick top-ups while out and on the go but costs more.
The best approach? Use AC charging as your daily routine and DC charging as a convenient backup when travelling.
Why Choose EVwired for Your EV Charging Cable?
EVwired cables are built to the highest UK standards — fully compatible with all Type 2-equipped EVs including Tesla, BMW, Kia, Polestar, Audi, Nissan, and Volkswagen.
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Free fast-tracked UK delivery.
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5-year warranty for long-term reliability.
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IP55 weather-resistant design for year-round use.
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Free carry case and end caps included.
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UK-based expert support.
Understanding the difference between AC and DC EV charging helps you charge smarter, save money, and extend your battery’s lifespan. Most UK drivers rely on AC home charging for everyday convenience, with DC rapid charging reserved for long journeys or quick top-ups.
Learn more about EV charging on the EVwired Blog.
