AC Charger vs DC Charger: What's the Difference, and Which Is Best for Your Home?
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If you've just bought an EV or are about to, the question that usually follows is — what is the difference between an AC Charger and a DC Charger? And which should you choose for home use? This article explains it all in one place, with no difficult technical jargon. A 5-minute read.
What is an AC Charger?
An AC Charger (Alternating Current Charger) is a charger that uses alternating current from a normal home electrical supply. The power is converted by the On-Board Charger (OBC) inside the car before being stored in the battery.
AC Charger advantages:
- Much cheaper than a DC Charger (THB 15,000–30,000 compared with THB 80,000+)
- Easy to install, works with a normal home electrical supply
- Ideal for overnight charging
- Low maintenance, long service life
- Suitable for houses, condos and private parking
Disadvantage: Charges more slowly than a DC Charger (maximum power ~22kW)
What is a DC Charger?
A DC Charger (Direct Current Charger), also known as a "Fast Charger", is a rapid charger that converts AC→DC inside the unit itself and sends power directly into the car's battery without going through the OBC, so it can charge very quickly.
DC Charger advantages:
- Very fast charging (50kW–300kW+, charging from 20–80% within 20–45 minutes)
- Suitable for public charging stations, restaurants, hotels and petrol stations
- Can serve several EVs at the same time
Disadvantages: Very expensive (THB 200,000–1,500,000+), requires a large 3 phase supply, complex installation
AC vs DC comparison table
| AC Charger (Wall Charger) | DC Charger | |
|---|---|---|
| Where it is used | Homes, condos, workplaces | Businesses, charging stations, petrol stations, car parks |
| Power supply | 1 phase or 3 phase | 3 phase (the electrical system and transformer must be assessed) |
| Charging power of the models EV Easy sells | 7.4 kW (1 phase) / 11–22 kW (3 phase) | 20 kW – 1 MW depending on model |
| Price | Charger with first-circuit installation from THB 19,900 (incl. VAT · U/Black Gen 2 7.4 kW) | Ask for a price based on model and site |
| See models | Wall chargers | DC chargers |
For home use — AC or DC?
The answer is clear: an AC Charger suits most homes, because:
- It is a worthwhile investment at an affordable price
- It works with your normal home electrical supply, with no need to upgrade
- Overnight charging — park in the evening, wake up to a full battery
- It is gentle on the car's battery in the long term
A DC Charger suits businesses that want to open a public charging station, or large businesses that need to charge many cars in a short time.
Frequently asked questions (FAQ)
Q: What is the difference between AC 7.4kW and 22kW? A: The main difference is charging speed. 7.4kW uses a 1 phase supply and charges fully in 6–8 hrs, while 22kW requires 3 phase and charges fully in 2–3 hrs. The car must also support AC charging at that power level.
Q: What is the difference between a Portable Charger and a Wall Charger? A: A Portable Charger plugs straight into a normal socket with no installation needed, but has lower power (~3.7kW). A Wall Charger must be permanently installed, but gives higher power and is safer in the long term.
Q: Do EV Easy's EV Chargers support every car model? A: They support all EV models that use a Type 2 connector (IEC 62196), which is the standard for EVs in Europe and Asia, including BYD, MG, Neta, AION, Volvo, BMW, Mercedes-Benz, Audi and others. Feel free to ask us about any model you are unsure of.
Summary
An AC Charger is clearly the right choice for homes and everyday EV drivers, while a DC Charger suits businesses that want a public charging station. If you are deciding, the EV Easy Thailand team is ready to give advice that matches your needs.
📞 093-359-2207 | LINE: @eveasy | eveasythailand.com
Free consultation, no obligation.
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Which charger can your home take?
The right charger depends on your meter size, your existing electrical panel and the distance from the panel to your parking spot — not just your car model. Send photos of your panel and parking spot on LINE and our team will give you a first assessment, or see the four installation options and their pros and cons on our installation service page.