OLINK Helps You Choose: AC Charging Levels Explained
Understanding the distinctions between Level 1 and Level 2 AC chargers allows you to select the most efficient and practical solution for your electric vehicle charging needs
| Parameter / Category |
Level 1 Basic |
Level 2 Standard |
| Power Range |
1.4–2.4 kW |
3.3–22 kW (commonly 7kW, 11kW, 22kW) |
| Typical Voltage/Current |
Single-phase 220V, 6–10A |
Single-phase/three-phase 220–400V, 16–32A |
| Charging Speed |
About 5–10 km of range per hour |
About 20–120 km of range per hour |
| Application Scenarios |
Basic backup charging, low-frequency use |
Residential communities, office buildings, shopping malls, public parking lots |
| Key Characteristics |
Low cost, easy installation, minimal power infrastructure requirements |
Moderate charging efficiency, wide applicability, suitable for most daily needs |
| Limitations |
Slow charging speed, not suitable for high-frequency daily use |
High-power installation may require grid upgrades, higher initial setup |
| Typical Users |
Individual car owners (as backup) |
Private car owners, enterprises, public charging operators |
| Installation Requirements |
Regular outlet, safety depends on wiring quality |
Dedicated circuit required, three-phase power supports higher capacity |
What to Consider When Buying an AC EV Charger?
Performance & Compatibility
When choosing an AC EV charger, the first consideration is whether the charging power meets your needs and whether it is compatible with your EV models. You should also consider installation requirements, such as whether the charger is single-phase or three-phase, the space constraints, and whether the grid capacity can support it.
Safety & Management
The safety features of the charger are crucial, including overcurrent protection, leakage protection, and compliance with recognized certification standards. Additionally, modern chargers often come with management capabilities, such as remote monitoring, billing systems, and user authentication, which improve convenience and operational efficiency.
Cost & Support
You should evaluate the hardware cost, installation fees, and operation and maintenance expenses to assess the return on investment (ROI). At the same time, the brand’s reputation, after-sales support, and software update capabilities are key factors for ensuring a long-term, reliable experience.
How to Choose the Right AC Charging Station for Your Project?
Selecting the ideal AC charging solution requires balancing your operational needs with infrastructure realities. Start by analyzing usage patterns - high-traffic public spaces typically need 22kW fast chargers, while workplaces and residential areas often benefit from more economical 7-11kW options.For example,
hotel EV charging typically benefits from 11kW stations that balance cost and charging speed, allowing overnight guest charging without overloading facility infrastructure.
Your existing electrical setup plays a crucial role. Single-phase 7kW units work well for retrofits, while three-phase 22kW chargers suit new constructions. Our smart load management can help maximize existing capacity when installing multiple stations.
For commercial operations, prioritize stations with OCPP compliance and smart features like remote monitoring, payment systems, and access control. These ensure seamless integration with your management platform while supporting future expansion.
Consider both upfront investment and long-term value. Higher-power stations may cost more initially but deliver better returns in high-usage scenarios. Our experts can help evaluate total cost of ownership and identify the most cost-effective solution for your specific requirements.
