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

Wondering how long it takes to charge an EV at home?

The answer depends mainly on three things: your battery size, your charger power and how much charge you actually need to add.

A larger battery takes longer to fill than a smaller one, while a higher-powered charger can deliver more energy in the same period. But the charger rating is not the whole story. Your EV also has its own maximum AC charging rate, and the actual charging rate can vary during a session.

For many UK drivers, home charging is an overnight job rather than something you need to watch by the minute. A typical 7kW-class home charger provides a practical balance between charging speed and everyday home use. UK government guidance places standard AC residential chargepoints in the 3.5kW to 7kW range, while higher-powered AC equipment sits in the next band.

How Do You Calculate EV Charging Time?

The basic calculation is simple:

Battery capacity (kWh) ÷ charger power (kW) = ideal charging time (hours)

For example, a 60kWh battery connected to a 7.4kW charger gives:

60 ÷ 7.4 = about 8.1 hours

That is an ideal calculation, not a promise of exactly 8.1 hours in the real world.

Actual charging time can be affected by your EV's maximum AC charging rate, the amount of energy you are adding, charging losses, battery management and changes in charging power during the session.

An important point: you rarely charge from 0% to 100%

Most drivers do not arrive home with a completely empty battery.

If your EV has a 60kWh battery and you arrive home at 30%, you only need to add roughly 42kWh to reach 100%.

At 7.4kW:

42 ÷ 7.4 = about 5.7 hours

So the question is often less about "How long does a full charge take?" and more about "How much energy do I actually need tonight?"

How Long Does It Take to Charge an EV at Different Power Levels?

The table below shows the ideal time to add the stated amount of energy. Real-world sessions can take longer.

These figures are mathematical examples based on the stated power levels. UK government material similarly shows that charging time varies with chargepoint power and battery size, and that the vehicle itself can limit the power actually delivered.

3.6kW Charging Time

A 3.6kW charger delivers significantly less power than a modern 7kW-class home wallbox.

Using the simple calculation, a 40kWh battery would require around 11 hours to receive 40kWh at 3.6kW, while a 60kWh battery would require around 16.7 hours.

This can work where a vehicle is parked for long periods, but it is noticeably slower than a 7.4kW home charger.

The UK government's residential specifications place standard AC chargepoints between 3.5kW and 7kW.

7.4kW Charging Time

A 7.4kW-class charger is a common choice for home charging because it can replenish a useful amount of energy during several hours parked at home.

For example:

40kWh added: around 5.4 hours
60kWh added: around 8.1 hours
80kWh added: around 10.8 hours

In practice, many charging sessions will be much shorter because you are topping up part of the battery rather than filling it from empty.

A 7kW home charger can therefore make overnight charging particularly practical. Industry and government guidance give typical home charging times of several hours depending on battery size and starting state of charge.

11kW Charging Time

An 11kW charger can reduce charging time compared with a 7.4kW charger, but whether your home and vehicle can actually use 11kW matters.

For example:

40kWh added: around 3.6 hours
60kWh added: around 5.5 hours
80kWh added: around 7.3 hours

An 11kW chargepoint does not automatically mean your EV will charge at 11kW. The car's own AC charging capability can be the limiting factor.

22kW Charging Time

22kW can deliver much more AC power than a 7.4kW home charger.

The ideal calculation gives:

40kWh added: around 1.8 hours
60kWh added: around 2.7 hours
80kWh added: around 3.6 hours

But there is an important catch.

A 22kW chargepoint only helps when the property, chargepoint and vehicle are all capable of supporting that level of charging. Higher-powered AC residential equipment may use a three-phase supply, and an EV that cannot accept 22kW AC will not charge at 22kW simply because the chargepoint is rated for it.

For many UK households, this makes a 7kW-class charger the more straightforward home option.

For a deeper comparison of the two power levels, see 7.4kW vs 22kW EV Chargers: Which One Is Right for You?

What Actually Affects EV Charging Time?

The charger rating is only one part of the equation.

Battery size

A larger battery stores more energy, so it generally takes longer to add the same percentage of charge.

A 40kWh battery and an 80kWh battery connected to the same charger will not take the same amount of time to receive the same percentage increase.

Your starting state of charge

Charging from 20% to 80% requires much less energy than charging from 0% to 100%.

That is why real-world charging sessions can be considerably shorter than a simple "empty to full" calculation suggests.

Your EV's maximum AC charging rate

This is one of the easiest things to overlook.

If your charger can supply 7.4kW but your vehicle can only accept less than that over AC, the car becomes the limiting factor.

Likewise, having a 22kW chargepoint does not make an EV with a lower AC charging limit suddenly charge at 22kW. Government guidance specifically notes that a chargepoint's power rating does not guarantee that amount of power will be delivered to the vehicle.

Your home's electrical supply

Your home's electrical setup also matters, particularly when looking at higher-powered charging.

The available supply and installation configuration can determine what charging power is practical for the property.

Charging conditions

Charging is not necessarily a perfectly flat process from the first minute to the last. Battery management can reduce charging power under certain conditions, meaning the simple kWh ÷ kW calculation should be treated as an estimate rather than an exact appointment with the clock.

How Long Does an Overnight EV Charge Take?

For many EV owners, overnight charging makes the exact number of hours less important.

Imagine a driver arrives home with 25% battery remaining and plugs into a 7.4kW home charger at 7pm.

They do not necessarily need the battery completely full within an hour or two. They have several hours while the car is parked and can simply charge during that period.

That is one reason a 7kW-class home charger remains practical for everyday use. UK guidance and charging data consistently describe several-hour home charging as normal, depending on vehicle and battery size.

Does Charging to 100% Always Take the Same Time?

No.

The simple calculation assumes a constant charging rate.

Real charging behaviour can be more complicated, particularly as battery state of charge changes. The vehicle's battery management system can alter the amount of power being accepted, so an estimated "X hours to full" figure should not be interpreted as a guaranteed constant charging rate throughout the entire session.

For everyday home charging, the more useful question is usually how much energy your car needs for the next day's driving.

How Much Does It Cost to Charge an EV at Home?

Charging time and charging cost are related, but they are not the same thing.

The basic cost calculation is:

Energy added (kWh) × electricity tariff (£/kWh) = charging cost

For example, if you add 40kWh and your tariff costs 25p per kWh:

40 × £0.25 = £10

Your actual cost depends on your electricity tariff and how much energy you add.

For a fuller breakdown of home charging costs, see How Much Does It Cost to Charge an EV in the UK?

Which Home Charger Power Is Right for You?

There is no universal answer.

3.6kW

Useful when charging speed is less important and the car can remain connected for long periods.

7.4kW

A practical choice for many homes where everyday overnight charging is the main requirement.

11kW

Worth considering where the property and vehicle support it and faster AC charging provides a genuine benefit.

22kW

Best suited to situations where the home electrical supply, chargepoint and vehicle can all support the higher charging rate.

The important point is that the most powerful charger is not automatically the best charger. Your actual charging speed is determined by the complete system rather than the wallbox rating alone.

So, How Long Will Your EV Take to Charge at Home?

For a quick estimate, remember:

Charging time ≈ energy you need to add ÷ actual charging power

Then ask:

How big is my battery?
How much charge do I actually need to add?
How much AC power can my EV accept?
How much power can my home charger and electrical supply provide?

For many UK drivers using a 7.4kW-class home charger, charging is simply something that happens while the car is parked overnight.

The exact number of hours matters less than having enough charge for the driving you plan to do next.

Frequently Asked Questions

How long does it take to charge an EV at home?

It depends on the battery size, charger power, starting state of charge and your EV's maximum AC charging rate. A 7kW-class home charger will typically take several hours rather than minutes.

How long does a 7.4kW charger take to charge an EV?

As a simple example, adding 60kWh at 7.4kW takes about 8.1 hours in ideal conditions. Actual charging time can be longer depending on the vehicle and charging conditions.

Is 7.4kW enough for home charging?

For many households, yes. A 7kW-class charger can provide several hours of charging while the vehicle is parked overnight and is a common domestic charging option.

Is 11kW charging much faster than 7.4kW?

Yes, where the vehicle and electrical installation can actually use the additional power. But the EV's own AC charging limit may reduce the difference.

How long does a 22kW charger take?

In ideal conditions, adding 60kWh at 22kW would take around 2.7 hours. In practice, the vehicle and property's electrical setup must support that level of charging.

Does a bigger battery take longer to charge?

Generally, yes. A larger battery requires more energy to reach the same state of charge, so all else being equal it takes longer.

Does a faster charger always charge an EV faster?

No. The vehicle can limit how much power it accepts, so a higher-rated chargepoint does not guarantee a higher charging rate.

Is it cheaper to charge an EV overnight?

It depends on your electricity tariff. Some tariffs offer different prices at different times, so the cost depends on when you charge and the rate you pay.

Final Takeaway

How long an EV takes to charge at home depends on the amount of energy you need to add and the lowest practical limit in the charging system.

A simple battery-size ÷ charging-power calculation gives you a useful starting estimate, but real charging times vary.

For many UK homes, 7.4kW-class charging provides a practical overnight solution without the need to chase higher power that the vehicle or property may not be able to use.

And that is the key: don't choose a charging speed based on the biggest number on the box. Choose the one that matches your EV, your home and the way you actually charge.