How long does it take to charge an electric car?

The four types of EV charger and how fast they are

UK charging infrastructure is divided into four speed tiers. Understanding which tier you are using tells you exactly what to expect before you plug in.

Slow AC charging (up to 3 kW)

This category covers standard 3-pin sockets and the slowest on-street chargers. Charging from empty on a typical 75 kWh battery takes 18 to 24 hours at 2.3 kW. A 3-pin socket is adequate for occasional top-ups when you only add 10 to 20 miles overnight, but it is not practical as your only charging method. Think of it as an emergency backup rather than a daily routine.

Fast AC charging (7 to 22 kW)

A 7 kW home wallbox installed by an OZEV-approved installer is the standard home charging solution and charges most EVs overnight in 8 to 12 hours. Installation costs approximately £750 to £1,000 including a standard cable run; verify current quotes from approved installers before committing as prices vary. Smart wallboxes connect to an app and let you schedule charging to run overnight during off-peak tariff hours. Fast AC chargers (7 to 22 kW) also appear in supermarket car parks, leisure centres, and destination charge points, adding approximately 25 to 75 miles per hour depending on the charger and the car's onboard charger rate.

Rapid DC charging (50 to 150 kW)

Rapid DC chargers are found at motorway services, petrol station forecourts, and dedicated charging hubs. A 50 kW charger adds 10 to 80% in approximately 30 to 40 minutes for a typical EV, contributing around 100 to 150 miles in that window. Public rapid charging costs approximately 65 to 85p per kWh at time of writing; rates vary significantly by network so check the network's app for current pricing before you arrive.

Ultra-rapid DC charging (150 to 350 kW)

Ultra-rapid chargers can add 10 to 80% in 15 to 25 minutes, but only for vehicles with 800V battery architecture that can accept the higher charge rate. For a 400V architecture vehicle, the charger will still work but will deliver at the car's maximum DC acceptance rate, not at the charger's headline output. The UK ultra-rapid network grew by 40% between January 2025 and January 2026, with coverage now strong on major motorway corridors.

Charging time by battery size: a practical matrix

The formula for estimating charging time is: battery capacity (kWh) divided by charger power (kW), multiplied by 1.1 to 1.15 to account for charging losses of approximately 10 to 15%. The table below shows approximate times across common battery sizes and charger speeds.

Times are approximate. Actual charging time depends on the car's maximum onboard AC charger rate and maximum DC acceptance rate. A car with a 7.4 kW onboard charger will not charge faster than 7.4 kW regardless of a 22 kW charger's output. Ultra-rapid times apply only to vehicles with 800V architecture.

Home charging: the option most EV drivers rely on

The majority of UK EV drivers charge at home overnight and start every day with a full battery. For daily use this means the question of "how long does it take to charge" rarely arises in practice: you plug in when you get home, and the car is ready when you wake up.

A standard 3-pin socket is adequate only for vehicles with small batteries (under 40 kWh) or for drivers who add fewer than 15 to 20 miles per day. For most EV owners, a 7 kW home wallbox is the right solution. It fits within a standard overnight window and adds the full range of most EVs from empty to full before morning.

Smart wallboxes add the ability to schedule charging for off-peak tariff hours, monitor energy use, and integrate with solar panels if you have them. For more on the options, see our home EV charger comparisons. For the cheapest overnight tariffs, see our EV tariff comparison.

Public charging: when you need a top-up on the go

The UK now has more than 66,000 public charge points. For most everyday driving, you will rarely need them: home charging covers the majority of journeys. Public charging becomes relevant for long motorway trips where you need to extend your range beyond a single charge, and for drivers without home charging who rely on public networks.

For a motorway stop, a 50 kW rapid charger is sufficient to add 100 to 150 miles in 30 to 40 minutes, roughly the time it takes to use facilities and have a drink. Ultra-rapid chargers cut this to 15 to 20 minutes for compatible vehicles. The key rule for rapid charging is to stop at 80%: the charge rate slows significantly above this point to protect the battery, so waiting for 100% on a rapid charger takes disproportionately long.

What slows charging down?

• The car's onboard charger rate. For AC charging, the car's built-in converter sets the speed ceiling. A car with a 7.4 kW onboard charger will charge at 7.4 kW on a 22 kW charger, not at 22 kW.
• Battery architecture. 800V vehicles charge faster on rapid DC than 400V vehicles. Connecting a 400V car to a 350 kW charger does not unlock 350 kW charging.
• Cold battery temperature. The Battery Management System limits charge speed in cold weather to protect cells. Pre-conditioning the battery before arriving at a rapid charger significantly reduces this effect.
• Battery state above 80%. Charging tapers above 80% to protect battery health. Plan to stop rapid charging sessions at 80% for the fastest overall journey time.

How to reduce your charging time

1. Pre-condition the battery on cold days before driving to a rapid charger. Warm cells accept charge at maximum speed.
2. Arrive at the charger with 10 to 30% battery remaining for the fastest session. Starting too low risks the car needing to warm the battery first; arriving higher means you charge less.
3. Stop at 80% unless you genuinely need the last 20% for the next leg.
4. Use ultra-rapid chargers (150 kW+) if your car supports them. The extra investment in 800V technology pays off in 10-minute shorter stops.
5. Schedule home charging overnight on an EV tariff. Cheap overnight rates mean there is no reason to rush home charging and no need to use expensive public charging for everyday mileage.