As electric vehicles (EVs) become more common, understanding how to charge them properly is essential. The two main types of EV chargers are AC (Alternating Current) and DC (Direct Current). Each serves a different purpose and use case. Here’s what you need to know.
How They Work
- AC Charging Stations
Deliver alternating current to the EV. The vehicle’s onboard charger (OBC) converts it into direct current (DC) before storing it in the battery. Charging speed is limited by the capacity of the onboard charger. - DC Charging Stations
Convert AC to DC within the station and deliver DC power directly to the battery, bypassing the onboard charger. This allows for much faster charging, making them ideal for quick top-ups.
Charging Speed
| Type | Power Range | Charging Time (Approx.) |
|---|---|---|
| AC | 3.7–22 kW | 4–8 hours |
| DC | 24–350 kW | 15–60 minutes |
Best Use Cases
- AC Chargers: Ideal for locations where the car is parked for extended periods, such as homes, offices, and hotels.
- DC Fast Chargers: Best for quick stops at highway rest areas, service stations, and urban fast-charging hubs.
Cost & Installation
- AC Chargers: Lower equipment and installation cost, minimal grid impact, suitable for residential and small business use.
- DC Chargers: Higher cost and complex installation, requiring more power infrastructure—typically installed by commercial operators or municipalities.