3.5kW vs 7kW vs 11kW vs 22kW EV Charging

Choosing the right EV charger power depends on your home supply, vehicle compatibility, and daily driving needs. The most common AC charging options are 3.5kW, 7kW, 11kW, and 22kW.

In simple terms, 3.5kW is the slowest, 7kW is the most common home charging option, and 11kW and 22kW are higher-power AC chargers that usually need three-phase power and a compatible vehicle.

What do these charging speeds mean?

These figures show the power output of an AC charger. In general, a higher kW rating means faster charging.

Actual charging speed also depends on:

your car’s onboard AC charger
whether you have single-phase or three-phase power
battery size
installation setup

A more powerful charger will not charge faster unless both the vehicle and electrical supply can support it.

Power level breakdown

3.5kW EV Charging

A 3.5kW charger is usually a portable charger using a standard UK 3-pin plug. It is the slowest option, but still useful in some situations.

Best for

Backup charging
Occasional charging
Low-mileage drivers
Travel or temporary use

Pros

Lower upfront cost
Easy to use
No major installation in many cases
Useful as a backup

Cons

Slow charging
Not ideal for daily heavy use
Less suitable for larger EV batteries

A 3.5kW charger is usually best as a backup or temporary solution rather than a main home charger.

7kW EV Charging

A 7kW charger is the most common home EV charging option in the UK. It offers a strong balance of speed, convenience, and practicality.

It usually requires a dedicated 32A circuit and professional installation, so it does not run from a normal 13A plug.

Best for

Most UK homes
Overnight charging
Daily home use
Homeowners with off-street parking

Pros

Much faster than 3.5kW
Ideal for regular home charging
Widely compatible
Good balance of performance and cost

Cons

Requires installation
Higher upfront cost than portable charging
Fixed in one place

For most EV owners, 7kW is the best all-round home charging choice.

11kW EV Charging

An 11kW charger is a faster AC option, but it usually needs three-phase power and a car that supports 11kW AC charging.

Best for

Three-phase properties
Businesses
Compatible EVs
Drivers wanting faster AC charging than 7kW

Pros

Faster than 7kW when fully supported
Good for some commercial or premium setups

Cons

Not suitable for many standard homes
Requires three-phase supply
Vehicle must support 11kW AC charging

An 11kW charger only makes sense if both the property and vehicle can use it properly.

22kW EV Charging

A 22kW charger is one of the fastest AC charging options, but it also has the highest requirements. It normally needs three-phase supply, proper installation, and a compatible EV.

Best for

Commercial premises
Workplaces
Fleet charging
High-capability three-phase setups

Pros

Very fast AC charging when supported
Useful for business or multi-vehicle environments

Cons

Not needed for most homes
Requires three-phase power
Not all EVs can accept 22kW AC
Higher installation cost

For most home users, 22kW is usually unnecessary.

Fast charging vs rapid charging

This is an important difference.

Fast charging usually means AC charging, such as 7kW, 11kW, or 22kW. Rapid charging usually means DC charging, typically 50kW and above.

So 7kW, 11kW, and 22kW are fast AC charging, but not rapid DC charging.

Which charger is best for home use?

For most UK homes, 7kW is the best choice. It offers the best balance of speed, practicality, and compatibility.

A 3.5kW charger can still work for short journeys or backup use, but it is usually too slow to be the best main option.

11kW and 22kW chargers are usually only worth considering if you already have three-phase power and a compatible EV.

Single-phase vs three-phase

Single-phase

Common in most UK homes
Usually supports up to 7kW AC charging

Three-phase

More common in commercial premises and some larger properties
Usually required for 11kW and 22kW AC charging

Without three-phase power, higher-rated chargers cannot usually deliver full performance.

Quick comparison

3.5kW

Best for backup, occasional use, and low-mileage drivers.

7kW

Best all-round choice for most UK homes.

11kW

Best for three-phase properties and compatible EVs.

22kW

Best for commercial or specialist higher-power setups.

Final thoughts

The best charger is not always the most powerful. It is the one that suits your home supply, vehicle, and routine.

For most UK drivers, 7kW is the most practical home charging option.

3.5kW is useful for backup and flexibility.

11kW and 22kW are better for three-phase properties and vehicles that can take advantage of higher AC charging speeds.

View 3.5kW Portable Chargers View 7kW Chargers