Tethered vs Untethered EV Charger — Which Should You Choose?

When you start looking into home EV charger installation, tethered vs untethered is one of the first decisions you'll encounter. It sounds technical but it's actually very simple — and once you understand what it means, the right choice for your situation usually becomes obvious quickly.

This guide explains the difference clearly, covers the genuine pros and cons of each, and gives you a straightforward way to decide which is right for your home.

What do tethered and untethered actually mean?

A tethered charger has a cable permanently fixed to the unit. It works like a petrol pump — the cable is always attached, always ready. You walk up, take the cable from its holster, plug it into your car, and walk away. When you're done charging, you unplug from the car and the cable goes back on the charger. That's it.

An untethered charger (also called a socketed charger) is a wall-mounted unit with a socket on the front but no cable. To charge your car, you take a separate Type 2 cable — either stored in your car's boot or kept near the charger — plug one end into the charger and the other into your car. When you're done, you unplug both ends and put the cable away.

The charging speed is identical for both types. This is one of the most common misconceptions — people assume tethered is faster because the cable is built in. It isn't. Speed depends on the charger's power rating and your car's onboard charger, not how the cable is attached. Both types typically deliver 7kW for a standard home installation, adding around 25–30 miles of range per hour.

The case for tethered

It's simpler every single day. For most households, the tethered charger wins purely on friction. You arrive home, the cable is right there, you plug in and walk inside. No boot rummaging, no extra steps, no cable to forget. Over the lifetime of the charger — which is typically 10 to 15 years — that small difference in convenience adds up to thousands of easier interactions.

The cable is always the right length. Tethered chargers typically come with a 5 to 7.5 metre cable, which is long enough to reach a car parked on most driveways regardless of where the charge port is on the vehicle. You don't need to think about it.

The cable can't walk. A cable permanently fixed to the unit is significantly harder to steal than a loose cable left outside. In areas where cable theft is a consideration — and it does happen — tethered is the more secure option.

It suits single-car households perfectly. If one person drives one car and charges in the same spot every time, there is almost no scenario where an untethered charger serves you better. The flexibility that untethered offers simply isn't needed.

The case for untethered

It looks cleaner on the wall. When an untethered charger isn't in use, it's a compact, cable-free box — significantly tidier than a tethered unit with a cable hanging from it. For homeowners who care about kerb appeal or live somewhere the charger is prominently visible, this matters. The Easee One, Hypervolt, and Andersen A2 are popular partly because their untethered design looks considered rather than industrial.

It's more flexible for multiple vehicles. If your household has two EVs — or one EV and one plug-in hybrid — different vehicles sometimes need different cable types or lengths. An untethered charger accommodates this without compromise. You use the cable that fits the car you're charging.

It's better for shared use. If you share a driveway or charger with a neighbour, family member, or flat-share household, untethered allows each person to use their own cable. There's no confusion about whose cable is whose and no dependency on one specific cable length suiting everyone.

It's more future-proof in theory. Type 2 is the universal standard for all new EVs in the UK and has been since around 2018, so for most people this argument is less relevant than it used to be. However, if you want the flexibility to use a different cable specification in the future — or if you occasionally need to charge a visitor's vehicle with a different connector — untethered gives you that option.

The cable damage argument. If a tethered cable gets damaged — run over, caught in a door, connector bent — it's a more involved repair than simply replacing a detachable cable. With untethered, a damaged cable is a £100–£200 replacement. It's not a frequent problem, but it's worth knowing.

What about cost?

Tethered chargers typically cost £50–£150 more than their untethered equivalents because the cable is included in the price. However, if you buy an untethered charger and don't already own a Type 2 cable, you'll need to purchase one separately — typically £80–£200 depending on length and quality. Most new EVs include a Type 2 cable in the boot as standard, so this may not be an additional cost at all.

When you factor in the full picture, the price difference between tethered and untethered is relatively modest — usually less than £100 either way — and shouldn't be the deciding factor. For the full cost picture see our Glasgow installation cost guide. Choose based on how you'll actually use it, not on saving £75.

The decision — a plain guide

Choose tethered if:

• You have one electric car and charge it in the same spot regularly
• You want the simplest possible daily routine
• You're not particularly concerned about the visual appearance of the unit
• You want to minimise the chance of cable theft

Choose untethered if:

• You have two EVs or regularly charge different vehicles
• You share a charger with someone else
• The visual appearance of the charger on your wall is important to you — you want it to look tidy when not in use
• You want maximum flexibility for future vehicles or cable specifications
• You already have a good Type 2 cable you're happy with

If you genuinely can't decide: go tethered. It's the right choice for the majority of Scottish homes, and the charger brands that tend to perform best on customer satisfaction surveys — Ohme, Pod Point, Zappi — all offer strong tethered versions as their primary option. The untethered case is compelling for specific situations, but for straightforward single-car households it adds a small amount of daily friction in exchange for flexibility that may never be needed.

A Scotland-specific note on cable length

This comes up more in Scotland than in other parts of the UK, simply because of the weather. A 5 metre cable is adequate for most standard driveways, but if your car's charge port is at the rear and the charger is mounted at the front of the property — common in some Glasgow and central Scotland terraced and semi-detached layouts — you may need a 7.5 metre cable to reach comfortably without straining the connector.

If you're going tethered, confirm the cable length with your installer before committing. Most major brands offer both 5m and 7.5m options at installation. Some, like Ohme, offer the longer cable at no additional charge. Others charge a small premium — typically £30–£60 — for the extended length. Worth asking upfront rather than discovering on installation day that the cable doesn't quite reach.

Popular chargers — tethered and untethered options

Most major charger brands offer both versions. Here's how the main models in Scotland break down:

Ohme Home Pro — available tethered only. Strong integration with Octopus Intelligent and other smart tariffs. 7.5m cable as standard.

Pod Point Solo 3 — available tethered and untethered. One of the most widely installed home chargers in the UK. Reliable and well-supported.

Zappi by myenergi — available tethered and untethered. Best choice if you have solar panels or are planning to install them. Tethered version is more popular for domestic installations.

Easee One — untethered only. Scandinavia-designed, slim profile, popular with homeowners who want something that looks considered. Has a cable lock feature so you can leave a cable semi-permanently attached if you choose.

Andersen A2 — untethered only. Premium timber and brushed metal finish, genuinely beautiful design. Popular in conservation area properties and premium new builds in areas like Bearsden and Thornly Park where aesthetics matter.

Hypervolt Home 3 — available tethered and untethered. Compact, well-reviewed, increasingly popular in the Scottish market.

Note on the OZEV grant

Both tethered and untethered options from approved brands are eligible for the OZEV grant if you qualify (renters, leasehold flat owners, landlords). Your choice between cable types doesn't affect grant eligibility.

Summary

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