Tethered vs untethered EV chargers: which suits your drive.
A tethered EV charger has its cable fixed on; an untethered one has a socket for your own cable. How to choose, and why the Hypervolt we fit is tethered.
A tethered EV charger has its charging cable permanently attached; an untethered one has a socket on the front, and you plug in a cable of your own each time. Tethered is quicker day to day. Untethered gives a tidier wall and lets you choose the cable. Neither charges the car any faster, and both have to meet the same smart-charging rules.
So the choice between tethered vs untethered is really about how you park, how you’d like to plug in, and how the charger will look on your wall.
What tethered and untethered mean
The Energy Saving Trust puts it plainly: a home charger is either tethered, meaning it has a permanent EV cable attached to it, or untethered, meaning it has a socket instead.
- Tethered. The cable lives on the charger, usually wound round the unit or hung on a holder. You lift the plug off, put it in the car and start charging.
- Untethered. The charger has a socket. You keep a cable in the car or the garage, plug one end into the charger and the other into the car.
The charger behind the socket or cable is the same kind of device either way. Both are covered by the Smart Charge Points Regulations, so both must be able to change when and how fast they charge, and both arrive with off-peak default hours you can change.
Tethered vs untethered EV charger: the trade-offs
| Tethered | Untethered | |
|---|---|---|
| Plugging in | One cable, already there | Get the cable out, plug in both ends |
| On the wall | Charger plus a coiled cable | A neater unit with a socket |
| Cable length | Chosen when it’s fitted | Your choice, and you can change it |
| Different cars | Suits the plug on the cable | Use whichever cable the car needs |
| Away from home | Cable stays at home | Can take the same cable with you |
| Cable condition | On show and in the weather | Stored away between charges |
Why people choose tethered
It’s the convenience. You get home, unhook the cable and plug in, with nothing to dig out of the boot on a wet night. If you charge most nights, that adds up. A cable that stays on the charger is also one less thing to lose or leave behind.
Why people choose untethered
The wall looks tidier with no cable coiled round the charger, which matters to some people on the front of a house. You can pick the cable length to suit the car, buy a longer one later if you change where you park, and use the same cable at a public charger that has a socket. If more than one car uses the charger, each can bring its own lead.
Cable length matters more with tethered
With a tethered charger, the cable length is set when it’s fitted, so it’s worth thinking about before the day. Things to measure:
- the distance from the planned charger position to where the car’s charging port sits when it’s parked
- whether the port is on the front, back or one side of the car, and which way you usually park
- whether a second car might park in a different spot
Hypervolt publishes three tethered cable lengths for the Home 3 Pro: 5 m, 7.5 m and 10 m, with the 10 m length available on the Type 2 version only. A longer cable gives you more freedom in how you park, but it’s more to coil up. We’d measure the route at the check rather than guess.
Where the cable runs
A charging cable shouldn’t trail across somewhere people walk. On your own drive that’s mostly about tripping, but next to a pavement it becomes a planning point. In England from 21 October 2026, a cable that crosses a footway has to use an authorised cross-pavement solution. That applies whichever kind of charger you choose, so if your only parking is on the street, read our planning permission guide first.
Does tethered or untethered change the cost?
The style changes which unit you buy and what comes with it, but the bigger parts of the job are the same: the circuit from your consumer unit, the cable run to the wall, load management and the network operator paperwork. Our EV charger installation cost guide goes through what actually decides the price.
Does it matter for solar charging or smart tariffs?
No. Solar modes, load management and tariff integration are features of the charger and its app, not of the cable. A tethered charger and an untethered one can both follow spare solar or a smart tariff’s schedule, as long as the model supports it. Our guide to charging an EV from your own roof covers the solar side.
The Hypervolt we fit is tethered only
We fit the Hypervolt Home 3 Pro, and Hypervolt is clear that all its chargers are tethered, with the cable permanently attached to the unit. There isn’t an untethered or socket version. Where the car parks in the same spot on a drive every night, tethered is the convenient choice, and the three cable lengths cover most layouts.
If you particularly want an untethered charger, say so at the start. It’s one of the questions that decides which charger is right, along with your supply, your parking and your tariff, all covered in our home EV charger checklist.
Questions to ask before you choose
Whichever way you lean, these are worth settling before the day:
- How many cars will use the charger, and do they all park in the same place?
- Which side of each car is the charging port on, and how far is it from the wall?
- Would you rather have a cable on show, or one to get out of the car each time?
- Do you use public chargers often enough to want one cable for both?
- Does the charger you’re considering come in the style you want, or only one?
- If the wall faces a pavement, will the cable cross it at any point?
None of these has a right answer. They just make the choice obvious for your drive rather than someone else’s, and they’re the questions we’ll ask you anyway.
What we’d do
We’d ask how you park and where the car’s charging port is, then walk from the charger position to the car with a tape. If one car parks in one place, we’d suggest tethered and pick the shortest cable that reaches comfortably. If the parking changes, there’s more than one car, or the front of the house matters more than convenience, we’d talk through the alternatives before you decide.
Where to go next
Our EV charging service page and Hypervolt page have more detail on the install and the unit. We fit chargers across Cheshire, Merseyside and Greater Manchester, including in Macclesfield.
