Tethered or untethered EV charger: which suits your drive

Same charging speed, same smart rules, different daily routine. The choice comes down to the plug on your car, where it parks and how much fuss you will put up with every evening.

A tethered charger keeps its cable attached for good, with a Type 2 connector on the free end that hangs on a holster when the car is away. An untethered charger is a box with a socket in it. Before every charge, someone takes a lead out of the boot and plugs one end into the wall and the other into the car.

Electrically they do the same job. A 7kW unit charges at the same rate either way, and both must meet the Electric Vehicles (Smart Charge Points) Regulations 2021. The government's minimum technical specification for grant funded home chargepoints accepts both, as long as any socket is a Type 2.

The plug on your car matters less than it did

Zapmap's connector guide (updated May 2026) calls Type 2 "the standard for EVs in the UK (and Europe) for home and public AC charging". Type 1 survives on a few older cars, and the example the guide gives is the older Nissan Leaf.

So the old argument for untethered units, that a fixed cable could leave you with the wrong plug, now bites in one case: a Type 1 car today with a change planned. An untethered socket takes a Type 1 to Type 2 lead now and a Type 2 lead later, with nothing changed on the wall. If every car in the household already takes Type 2, that argument mostly falls away.

Measure the walk from wall to charge port

Charge ports sit in different places. Some are on the front wing, some on the rear, a few in the nose. Measure from where the charger will go to the port, following the route the cable would take round bins, steps and the other car.

A tethered lead has a fixed length chosen when you order. An untethered setup takes whatever lead you buy, and a longer one can be bought later. Two cars parked nose to tail on one drive is the case where a tethered cable most often falls short. Give the installer the make and model of each car and say how they park, and ask for a price with a cable that reaches the far one.

Day to day, side by side

	Tethered	Untethered
Plugging in	Lift the connector off the holster	Fetch the lead from the boot, plug in both ends
Cable length	Fixed when you order	Whatever lead you own
A lead for public posts	Still needed in the boot	The same lead does both
On the wall when not charging	A coiled cable	A plain box
Moving to a car with another plug	New cable or new unit	Buy a different lead

The third row catches people out. Rapid public chargers have their own cables, but Zapmap notes that most modern EVs need a Type 2 to Type 2 lead for the public AC network. Owners of a tethered home unit still keep a lead in the boot, so the tethered unit saves the daily chore at home without removing the lead from your life.

The drawback of going untethered

The lead comes out of the boot every time. After a wet evening it goes back in muddy, and it lives in the boot with the shopping. For a household that plugs in most nights, this small job is the main argument for a tethered unit. People who charge once or twice a week notice it far less.

A quick way to decide

• One car, Type 2, one parking spot: tethered is the easier habit.
• A Type 1 car, or a change of car coming soon: untethered.
• A charger on the front of the house where you want nothing hanging on the wall: untethered.
• Two cars at different distances: either, once you have measured.

The quote form on Spark Up asks this question and accepts "no preference", which is a fair answer if you are unsure. Installers who fit home EV chargers will say which units they fit in each version, and the quotes you compare will then have the cable choice priced in.