How Do You Charge an Electric Car at Home?

Can You Plug an Electric Car into a Normal Socket?

Yes, you can.

This is called “granny charging” — using a standard 3-pin UK plug to charge your EV.

It’s slow (typically 2.3kW), and a full charge can take 24+ hours depending on your car’s battery size.

While convenient for emergencies, it’s not ideal for regular use.

How Long Does It Take to Charge an EV at Home?

3-pin socket (2.3kW): 20–30 hours for a full charge.
Dedicated home charger (7.4kW): 6–10 hours depending on battery size.
22kW charger (if supported): As little as 2–4 hours — but this requires a 3-phase electricity supply, which most UK homes don’t have.

Can You Use an Extension Lead to Charge an EV?

Technically yes — but it’s strongly discouraged by manufacturers and electricians.

Standard extension leads are not designed to handle the high current for long durations and could overheat, posing a fire risk.

If you must use one in an emergency, it should be:

Heavy-duty and rated for outdoor use
Uncoiled to prevent heat buildup
Plugged directly into the wall — no daisy chaining!

Important: Never leave an EV charging unattended on an extension lead overnight.

How Do You Install a Home EV Charger?

Home chargers (also called wallboxes) are safer and faster.

Installation involves:

A qualified installer connecting the charger to your main fuse board
Fitting an isolator switch and dedicated circuit
Running an external cable to the wall-mounted unit near your driveway or garage

You may also need:

Permission if you live in a flat or rented property
Wi-Fi connection for smart charger features

How Much Does It Cost to Install a Charger?

In the UK, a standard 7kW home charger install typically costs between £800–£1,200.

The government used to offer the EVHS grant, but this has now been replaced with schemes for flats and rented properties only.

Do You Need Permission from the Grid?

Your installer will usually notify the local DNO (Distribution Network Operator) on your behalf.

For most homes, a 7kW charger is acceptable.

But if your wiring is older or you want a faster 22kW unit, a more detailed assessment (and possibly an upgrade) is needed.

Smart Chargers vs Untethered Chargers

Smart chargers connect to apps, track energy use, and can schedule charging when electricity is cheapest.
Untethered chargers simply start charging when plugged in—no extras, no data.

In the UK, since 2022, all new domestic EV chargers must be smart-enabled by law.

Final Thoughts

Charging your electric car at home is easier and safer than ever with a proper wallbox.

While it’s possible to use a standard plug, a dedicated charger is faster, safer, and often smarter.

Avoid extension leads if possible, and always use a certified installer for peace of mind.

Hope you’ve found our article, How Do You Charge an Electric Car at Home? useful.

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