Tethered vs Untethered EV Chargers: Which Should You Choose?

The quick answer

Choose a tethered EV charger if you want the simplest everyday charging experience and usually charge one main EV from a driveway or garage. The cable is always attached, so you can park, plug in and walk away.

Choose an untethered EV charger if you want to choose your own cable length, replace the cable easily or keep it stored out of sight when the charger is not in use.

Tethered vs untethered: key differences

What is a tethered EV charger?

A tethered EV charger has a charging cable permanently attached to the wallbox. To charge, you simply take the connector from the charger, plug it into your vehicle and start the session.

Most tethered home chargers in the UK use a Type 2 connector, which is the standard AC charging connector for modern electric vehicles sold in the UK and Europe.

Cable lengths vary by model, but many tethered chargers come with a cable between five and eight metres long, which is suitable for many typical driveway installations.

If you later need a different cable length, or the cable becomes damaged, it may be possible to replace it. However, this will usually need to be carried out by the manufacturer, installer or a qualified electrician.

Advantages of a tethered EV charger

A tethered charger is usually the best choice when convenience is your main priority.

• The cable is always connected and ready to use.
• Charging quickly becomes part of your routine: park, plug in and walk away.
• Everyone in the household knows where the cable is.
• There is no need to carry, coil or store the cable after each charge.
• You are less likely to leave the cable in another vehicle or storage space.

A tethered charger is typically ideal if:

• You have one main electric vehicle.
• You charge at home most days or several times a week.
• You usually park in the same position.
• You have a driveway or garage.
• You want the simplest possible setup with minimal handling.

Disadvantages of a tethered EV charger

The main trade-off is reduced flexibility.

• You cannot easily change to a shorter or longer cable without professional help.
• Replacing a damaged cable will often require an installer or electrician.
• The cable remains visible on the front or side of the property.
• It may be less suitable if you regularly charge vehicles with different connector requirements.

The last point is less of an issue for most modern EVs because Type 2 is now the standard connector across the UK and Europe.

What is an untethered EV charger?

An untethered EV charger has a charging socket instead of a permanently attached cable.

To charge your car, you connect your own EV charging cable between the wallbox and the vehicle. For most modern EVs and home chargers in the UK, this means using a Type 2 to Type 2 cable with a suitable power rating.

When the charging session is complete, you disconnect the cable and store it separately. This could be in the boot, garage, porch, cable bag or a dedicated storage box.

Untethered chargers are popular with drivers who want to choose their own cable length or keep the cable stored away when the wallbox is not in use.

Advantages of an untethered EV charger

The main advantage is flexibility.

• You can choose the cable length that suits your driveway and parking layout.
• If the cable becomes damaged, you can usually replace it without changing the charger.
• You can upgrade the cable if your charging requirements change.
• You can keep different cable lengths for different parking positions.
• Once the cable is disconnected and stored, only the wallbox remains visible.

An untethered charger is typically a good choice if:

• You want a discreet installation on the outside of your home.
• You regularly park in different positions.
• You have a longer or less predictable driveway layout.
• You want to replace or upgrade your cable easily.
• You prefer not to leave a cable permanently attached outside.
• Different vehicles may require different cable lengths.

Disadvantages of an untethered EV charger

Untethered chargers involve a little more effort day to day.

• Every charging session means getting the cable and plugging it into both the charger and the vehicle.
• You need to disconnect and store the cable after use.
• You will need a suitable storage space, particularly if you do not have a garage.
• The charging cable is usually not included, so it must be purchased separately.
• There is a greater chance of forgetting the cable or leaving it in another vehicle.

Which is better for your home?

There is no single best option for every driver. The right choice depends on how you use your EV, where you park and how much flexibility you need.

A tethered charger is likely to be better if you:

• Charge the same vehicle at home most days.
• Park in a predictable position on a driveway or in a garage.
• Prioritise convenience.
• Do not want to handle or store a separate cable.

An untethered charger may be better if you:

• Want the cable stored out of sight when it is not in use.
• Need different cable lengths for different parking positions.
• Want to replace the cable easily without changing the charger.
• Expect your vehicle or parking arrangements to change.
• Prefer to keep a portable cable available for use elsewhere.

Having more than one electric vehicle does not automatically mean that you need an untethered charger. A tethered Type 2 charger can work perfectly well with multiple modern EVs, provided they use the same connector and can reach the fixed cable.

An untethered charger may offer more flexibility where different vehicles are parked in different positions or require different cable lengths.

Still unsure which setup is right for your home? Consider your usual parking position, how often you charge and whether everyday convenience or long-term cable flexibility matters most.

Does tethered or untethered affect charging speed?

No. A tethered charger is not faster because the cable is attached, and an untethered charger is not slower because the cable is removable.

Charging speed depends on:

• The charger’s power output.
• The home electricity supply.
• The vehicle’s maximum AC charging rate.
• The rating of the charging cable.
• Battery temperature.
• The battery’s current state of charge.

A tethered 7kW charger and an untethered 7kW charger will normally charge at the same speed, provided the vehicle and cable support the same power level.

What cable do you need for an untethered charger?

Most modern EVs in the UK require a Type 2 to Type 2 charging cable for use with an untethered home wallbox.

Type 2 is the standard AC connector for the majority of current EVs in the UK and Europe.

When choosing a cable, consider:

• Cable length, such as 5m, 7m, 10m or longer.
• Power and current rating.
• Single-phase or three-phase compatibility.
• Build quality and weather resistance.
• How and where the cable will be stored.

For a standard 7kW home charger, you will typically need a Type 2 cable rated to at least 32A single-phase.

If you have an 11kW or 22kW three-phase charger, you may need a suitable three-phase cable. However, buying a higher-rated cable will not increase charging speed if the vehicle or charger cannot support the additional power.

Browse Type 2 charging cables in a range of lengths and power ratings to find the right option for your charger, vehicle and driveway.

What cable length should you choose?

The best cable length depends on where the charger is installed, how you park and where the charging port is located on your vehicle.

Before buying, measure the distance from the wallbox to the vehicle’s charging port. Allow some additional slack so that the cable does not need to be stretched tight.

5-metre charging cables

A five-metre cable is suitable when the charger is installed close to the vehicle and the charging port is easy to reach.

It is compact and easy to store but offers less flexibility if the vehicle is parked in a different position.

7-metre charging cables

A seven-metre cable is a practical everyday choice for many households.

It gives you more flexibility than a five-metre cable without becoming too bulky or difficult to handle.

10-metre charging cables

A 10-metre cable is useful when the charger is further from the vehicle, parking positions vary or different vehicles have charging ports in different locations.

15 to 20-metre charging cables

Longer cables may be suitable for extended driveways, cars parked behind one another or charging locations where the wallbox is further from the vehicle.

They are heavier and take up more storage space, so they may be less convenient to carry regularly.

Very long charging cables

Cables longer than 20 metres are generally intended for more specialist situations where the cable will remain near one regular charging location.

Whatever length you choose, avoid leaving unnecessary loops across pavements, paths or access routes where they could create a trip hazard.

Tethered vs untethered for different households

Best for convenience

Choose tethered. The permanently attached cable makes it the easiest option for frequent charging when one main EV is parked in a predictable position.

Best for a tidy driveway

Choose untethered. Once the cable is disconnected and stored, only the wallbox remains visible.

Best for future flexibility

Choose untethered. You can change the cable length or replace a damaged cable without replacing the entire charger.

Best for one main electric car

Choose tethered. A fixed cable is usually ideal where the same vehicle is charged in the same spot most days.

Best for multiple electric cars

Either option may be suitable. A tethered charger is convenient where all vehicles use Type 2 and can reach the fixed cable. An untethered charger may be more flexible if vehicles are parked in different positions or require different cable lengths.

Best for renters or shared parking

The right option depends on the property and installation arrangements.

You may need permission from a landlord, freeholder or property manager before installing a home charger. You should also consider who will be able to access the charger and how the cable can be stored safely.

Should you keep a portable EV charger as well?

Many EV drivers keep a portable EV charger, often called a Mode 2 charger or granny charger, as a backup for situations where a dedicated wallbox is not available.

This allows charging from a suitable UK three-pin socket.

Portable charging is slower than using a 7kW home charger, but it can be useful when visiting friends or family, staying at holiday accommodation or charging a plug-in hybrid.

It may also suit some drivers with low daily mileage, provided the electrical installation is suitable.

Portable EV chargers should only be connected directly to an appropriate wall socket.

Do not use extension leads, multi-socket adapters or damaged sockets for EV charging. If there is any uncertainty about a socket or circuit, it should be checked by a qualified electrician before charging.

Frequently asked questions

Do I need a separate cable with a tethered charger?

No. A tethered charger has a cable permanently attached, so you do not need a separate cable for normal home charging.

You may still need a Type 2 cable for some public charging points or a portable charger for backup use.

Can a tethered charging cable be replaced?

In many cases, yes.

However, replacing a tethered cable will usually need to be carried out by the charger manufacturer, an approved installer or a qualified electrician.

Does an untethered charger charge more slowly?

No.

A tethered and untethered charger with the same power output should charge at the same speed, provided the removable cable has the correct rating.

Can I change from tethered to untethered later?

Changing from tethered to untethered will usually involve replacing the charger rather than simply removing the cable.

Some charger models may offer different options, so check with the manufacturer or installer before making changes.

Can I leave an untethered cable connected?

This may be possible depending on the charger model and installation, but it reduces some of the appearance and flexibility benefits of an untethered setup.

Always follow the charger manufacturer’s instructions.

Can one charger be used for multiple EVs?

Yes, provided the vehicles are compatible with the charger connector and power output.

Most modern UK EVs use Type 2 for AC charging, so one charger can often be shared between several vehicles.

Shop home EV chargers and cables at EV Extras

Whether you choose a tethered or untethered setup, EV Extras can help you build a complete home charging kit for your vehicle and property.

Explore the range of:

• 7kW home EV chargers for standard UK home installations.
• Type 2 charging cables in a choice of lengths and ratings.
• Portable EV chargers for backup and occasional charging.
• EV charging accessories to keep your setup tidy and protected.

If you choose an untethered wallbox, select a cable length that comfortably reaches your vehicle without being stretched tight.

EV Extras offers free UK delivery on all orders, a 30-day returns policy and products supported by more than 1,400 five-star Trustpilot reviews.