Tethered or untethered EV charger: which should you choose?
It is the question we get asked at almost every survey, and the honest answer is: it depends on how you use your car. Here is the difference in plain English.
Published 23 October 2026 · Data Lynes Electrical, Ruislip
The difference in one sentence
A tethered charger has its charging cable permanently attached, like a petrol pump. An untethered (or socketed) charger just has a socket, and you plug in your own cable each time, usually the one that came with the car.
Why most of our customers choose tethered
For day-to-day charging on your own driveway, tethered is simply more convenient. You pull up, lift the cable off the charger and plug in. No opening the boot, no coiling a wet cable back into a bag in January.
Most of the chargers we install around Ruislip, Uxbridge and Pinner are tethered, and very few of those customers regret it.
When untethered is the better choice
There are three situations where we would steer you the other way:
- You might change car type. Almost every new EV uses the Type 2 connector, but if you currently drive an older model with a Type 1 socket, an untethered unit means you only replace the cable, not the charger, when you upgrade.
- You want a tidier wall. With no cable hanging on it, a socketed charger is a small, neat box. On the front of a house, some people prefer that look.
- Two cars, different needs. A socketed unit lets you use whichever cable suits the car on the drive that evening.
Things people worry about that rarely matter
Charging speed is identical. Tethered or untethered makes no difference to how fast your car charges; that is set by the charger’s rating and the car itself.
Cable theft is rare. Untethered cables lock into both the car and the charger while charging. You should not leave one lying on the drive, but it is not the risk some forums make it out to be.
Smart features are the same. Scheduling cheap overnight charging, solar matching and app control work the same either way.
Our advice
If you have one EV, park on your own driveway and plan to keep the car a few years: go tethered, and pick a cable long enough to reach the charging port however you park. If you are between cars, run two EVs, or care a lot about how the wall looks: go untethered.
Either way, the installation itself is the same job, and it is the part that matters most: a dedicated circuit, proper earthing arrangements and a certificate at the end. As an NICEIC Approved Contractor we do that to BS 7671 on every install.
Thinking about a home charger? Have a look at our EV charger installation page, or request a quote — we are happy to advise on tethered vs untethered for your exact driveway and car.