Almost every new EV owner faces the same question: should I install a wall box, or is a portable charger enough? The short answer: if you park in the same place every night and can install a charger, a wall box is the most convenient long-term solution. If you rent, move often or need flexibility, a portable charger is a smart and affordable choice.
What is a portable EV charger?
A portable charger (also called a Mode 2 charger) is a charging cable with a control box built in. You plug one end into a socket and the other into your car. Depending on the plug, it can charge from:
- A standard household socket: usually around 2.3 kW. Slow, but enough to add roughly 10–15 km of range per hour.
- An industrial CEE socket (blue or red): from 3.7 kW up to 11 kW or even 22 kW, with the right adapter and electrical supply.
What is a wall box?
A wall box is a charging station mounted permanently on a wall and wired directly into your electrical panel by an electrician. Typical home wall boxes deliver 7.4 kW (single-phase) or 11–22 kW (three-phase).
Side-by-side comparison
| Portable charger | Wall box | |
|---|---|---|
| Installation | None (needs a suitable socket) | Electrician required |
| Typical power | 2.3–11 kW | 7.4–22 kW |
| Take it with you | Yes | No |
| Smart features | Basic | Often app, scheduling, load control |
| Upfront cost | Lower | Higher (device + installation) |
When a portable charger makes sense
- You rent your home or apartment.
- You mostly drive short distances and charge overnight.
- You want a backup charging option for trips, holiday homes or visiting family.
When a wall box makes sense
- You own your home and park in the same spot every day.
- You regularly drive long distances and need faster charging.
- You want scheduling to charge at cheaper night tariffs, or integration with solar panels.
A word on safety
Charging an EV draws high current for many hours, and household sockets and wiring are not always designed for this. Before charging regularly from a socket, have an electrician check the circuit, and never use extension cable reels. A wall box must always be installed by a qualified electrician with the correct residual current protection.
FAQ
Can I use a portable charger every day?
Yes, as long as your socket and wiring are suitable. Many drivers use a portable charger as their only home charger.
Is a wall box faster?
Usually yes, but your car's onboard charger sets the maximum AC charging speed. Read more in our guide 7 kW, 11 kW or 22 kW?