How Long Does It Take to Charge an Electric Car? Three-Pin Plugs, Home Chargers and Rapid Charging Explained
Thinking about leasing an electric car? One of the first questions is usually: how long does it take to charge?
The answer depends on the battery, how much charge you need and the charging equipment you use. A three-pin plug can take more than a day to fill a larger battery, while a dedicated home charger makes overnight charging far more practical.
At National Vehicle Solutions, we believe in Vehicle Leasing Made Simple. Here’s what you need to know before choosing your next electric car.
How do you calculate electric car charging time?
For a basic estimate, use:
Charging time in hours = energy needed in kWh ÷ charging power in kW.
A car with a 60kWh usable battery, charging from empty using a 7kW home charger, gives this calculation:
60 ÷ 7 = 8.57 hours approximately 8 hours and 34 minutes.
So, the answer to the charging challenge is 8.6 hours.
However, this is an ideal calculation. Some electricity is lost during charging, and the car may reduce its charging speed. The actual time will be longer.
Battery capacity is measured in kWh, which describes how much energy it stores. Charging power is measured in kW, which describes how quickly energy is supplied.
Can you charge an electric car using a three-pin plug?
Yes, provided your car supports it and you use a suitable portable EV charging cable with its own control unit. These are often called “granny chargers”.
For the examples below, we assume a 10-amp portable charger on a 230-volt supply, giving approximately 2.3kW. Check your equipment: portable chargers have different ratings and settings.
At this power, a 60kWh battery takes approximately 26 hours from empty to full before charging losses. An 84kWh usable battery takes approximately 36.5 hours, again before losses.
That makes a three-pin plug slow, but it can still be useful for occasional charging or smaller daily top-ups.
Electric car charging times compared
These are calculated minimum times from 0% to 100%, assuming the battery capacities shown are usable and the stated power stays constant. They exclude charging losses and any slowdown.
| Usable battery capacity | Three-pin charger: 2.3kW | Home charger: 7kW | AC charger: 11kW |
|---|---|---|---|
| 40kWh | 17.4 hours | 5.7 hours | 3.6 hours |
| 60kWh | 26.1 hours | 8.6 hours | 5.5 hours |
| 77kWh | 33.5 hours | 11 hours | 7 hours |
| 84kWh | 36.5 hours | 12 hours | 7.6 hours |
Real charging times will be longer. For illustration, if 90% of the electricity supplied reaches the battery, the 60kWh example becomes approximately 29 hours at 2.3kW or 9.5 hours at 7kW. Actual efficiency varies.
An 11kW AC charger also needs a suitable electricity supply, usually three-phase, and a car that can accept 11kW AC. Connecting to a more powerful charger does not automatically make your car charge faster.
Do you need to charge from empty every night?
Usually, you’re replacing the energy used that day.
Suppose your car achieves 3.5 miles per kWh and you drive 35 miles. You have used approximately 10kWh.
Replacing that energy takes roughly:
-
4 hours and 21 minutes using a 2.3kW three-pin charger.
-
1 hour and 26 minutes using a 7kW home charger.
Both figures exclude losses.
This is why a small daily top-up can be manageable through a suitable three-pin setup, even when a full charge would take more than a day. Higher mileage leaves less room for slow charging.
Is three-pin EV charging safe?
It needs the right equipment and a suitable electrical installation. Charging puts a sustained load on a socket for many hours.
Use a manufacturer-approved or compatible portable EV charger and follow its instructions. Have a qualified electrician check the socket, wiring and protective devices before relying on domestic-socket charging.
Avoid household extension leads, multiway adaptors and daisy-chained cables. Stop charging if you notice excessive heat, discolouration, a burning smell or damage. Keep connections protected from weather and cables clear of walkways.
A dedicated, professionally installed charge point is the more practical option for regular home charging. Charging provider Pod also advises against using extension cables for EV charging.
How long does a home EV charger take?
Using the 7kW assumption, a 60kWh battery needs about 8.6 hours before losses for a complete refill. If you only need to charge from 20% to 80%, you are adding 36kWh:
36 ÷ 7 = approximately 5 hours and 9 minutes before losses.
Check your car’s AC charging limit, your charger’s rating and any load-management settings. These determine the power you actually receive.
Smart charging can help schedule charging around a suitable off-peak electricity tariff. Compare the whole tariff, including daytime prices and standing charges, before switching.
How fast are public rapid chargers?
Public DC rapid and ultra-rapid chargers can make charging stops much shorter. However, a charger’s advertised power is its maximum output, rather than a speed every car receives throughout the session.
Your car’s DC charging limit, battery temperature, starting charge level and the charge point’s available power all affect the result. Manufacturer charging-time guidance helps explain the difference between home and rapid charging.
For a useful comparison, check the vehicle’s published 10%–80% DC charging time and the conditions used to measure it. Simply dividing battery capacity by a rapid charger’s headline power can give an unrealistic result.
Which charging setup suits you?
A three-pin charger may suit occasional use or modest top-ups where the electrical installation has been checked. A dedicated home charger makes more sense when you drive regularly and want to replenish the battery overnight.
Without home charging, look at reliable workplace and public charging options near your usual routes. Consider availability, pricing and how much time you can comfortably allow.
Before leasing, compare usable battery capacity, AC charging speed and DC charging time alongside range and monthly rental. A bigger battery is useful, but the right car should also fit the way you charge.
Find an electric car lease that fits your life
Ready to explore electric car leasing? National Vehicle Solutions can help you compare vehicles around your mileage, budget and charging arrangements.
Explore National Vehicle Solutions or request a tailored electric car leasing quote today.
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