The growing popularity of electric cars means that more and more drivers are deciding to install a home charging station. One of the most frequently asked questions is: which wallbox should I choose – 11 kW or 22 kW? Choosing the right power is crucial for user comfort, charging time, and installation costs. In this article, we explain the differences between an 11 kW and a 22 kW wallbox and suggest which solution will be best in specific situations.
What is a wallbox and why is it worth having
A wallbox is a home electric car charging station, most often installed in a garage or on the building’s facade. It provides safe, fast, and convenient car charging compared to a standard electrical outlet. Wallboxes differ primarily in their charging power, with 11 kW and 22 kW models being the most popular.
11 kW Wallbox – characteristics
An 11 kW wallbox is a three-phase charging station that, in practice, is sufficient for most electric car users.
Key features of an 11 kW wallbox:
- charging with power up to 11 kW
- compatibility with most electric cars available on the market
- possibility of fully charging the battery overnight
- lower purchase and installation costs
- lower requirements for the home electrical installation
For people who cover moderate distances daily and charge their car mainly at night, the 11 kW wallbox is an optimal solution.
22 kW Wallbox – characteristics
A 22 kW wallbox is a more powerful version of a home charging station, also operating on a three-phase power supply.
Key features of a 22 kW wallbox:
- charging with power up to 22 kW
- significantly shorter charging time compared to 11 kW
- a good solution for large batteries and intensive car use
- higher device and installation cost
- necessity of an appropriate power connection
It is worth remembering that not every electric car is able to use the full 22 kW power. Many models factory-limit AC charging to 11 kW.
Differences between an 11 kW and 22 kW wallbox
The basic difference is the charging power and the resulting energy replenishment time. A 22 kW wallbox can charge a car up to twice as fast, but only if the car and the electrical installation allow it.
11 kW Wallbox:
- longer charging time
- lower cost
- lower technical requirements
22 kW Wallbox:
- shorter charging time
- higher price
- higher installation requirements
When to choose an 11 kW wallbox
An 11 kW wallbox will be the best choice if:
- you charge your car mainly at night
- daily mileage is not very high
- you do not want to upgrade your electrical installation
- you care about lower investment costs
- you own a car with AC charging up to 11 kW
For most private users, an 11 kW wallbox is completely sufficient for daily electric car use.
When is it worth choosing a 22 kW wallbox
A 22 kW wallbox will work best when:
- you often travel long distances
- you want to minimize charging time as much as possible
- you own several electric cars
- you are planning a future-proof installation
- you have an appropriate power connection
This solution is more often chosen by companies, fleets, and users with high requirements.
Wallbox installation – what you need to remember
Regardless of the chosen wallbox power, it is crucial to properly prepare the electrical installation. Before installation, you should check:
- the building’s connection power
- electrical protections
- cable cross-sections
- compliance with applicable standards
The installation should always be performed by a qualified electrician.
Summary: which wallbox to choose 11 kW or 22 kW?
The choice between an 11 kW and 22 kW wallbox depends on the user’s individual needs, the building’s technical capabilities, and the electric car model.
An 11 kW wallbox is an economical and sufficient solution for most drivers. A 22 kW wallbox provides faster charging and greater flexibility, but involves higher costs.
If you care about a practical and reasonable choice for your home, an 11 kW wallbox will be the best option. If, however, charging time is of key importance to you, it is worth considering a 22 kW wallbox.