Charging an electric car at home is simpler than most people expect in practice, it is as straightforward as plugging in a phone overnight. You connect the charging cable to your car and to your home charger, and the car charges while you sleep. The decisions that produce the best experience, lowest running cost, longest battery life, most convenient daily routine are mostly made once at the setup stage rather than repeated every evening. This guide covers everything you need to know about home EV charging: what equipment you need, how the charging process actually works, how to use smart scheduling to cut your electricity costs, and what the difference is between a home charger and a public charging station.
What You Need to Charge at Home
A dedicated home wallbox
The recommended approach for home charging is a dedicated 7kW wallbox, a purpose-installed charging unit fixed to an exterior wall or in a garage and connected to a dedicated 32A circuit from your consumer unit. A 7kW wallbox adds approximately 25–30 miles of range per hour, meaning a typical 60kWh battery is fully charged from near-empty in 8–10 hours overnight.
Most new EV owners install a wallbox at the same time as or shortly after taking delivery of the vehicle. If you have not yet had one installed, see our home EV charger installation guide for what the process involves and our EV charger installation cost guide for what it costs.
The Mode 2 cable that came with your car
Every electric vehicle comes with a Mode 2 cable sometimes called a granny charger that connects to a standard 13A domestic socket. This delivers approximately 2.3kW, adding around 8–10 miles of range per hour. It is useful as an emergency backup but is not designed for regular use as a primary charging method. Regular overnight charging on a standard domestic socket puts a continuous 10-hour load on a circuit designed for intermittent use, which produces a heat build-up risk that a dedicated 32A wallbox circuit does not.
Use the Mode 2 cable when away from home without access to a wallbox. For daily home charging, the dedicated wallbox is the correct long-term solution.
The right charging cable for your car
Home wallboxes come in two configurations: tethered and untethered.
A tethered wallbox has a cable permanently attached to the unit. You pick up the cable, plug it into the car, and charging begins. No separate cable required.
An untethered wallbox has a socket on the unit. You need your own Type 2 cable which typically comes with the vehicle to connect the charger to the car.
Most modern UK electric vehicles use a Type 2 connector for home charging. Check your vehicle’s handbook to confirm the connector type before choosing a wallbox configuration.
How Home Charging Actually Works Step by Step
For a tethered wallbox:
Step 1 Park the car within reach of the charging cable. The cable on a tethered unit is typically 5–8 metres. Position the charging port of the car within comfortable reach of the cable without stretching or kinking it.
Step 2 Unlock the charging port. Most EVs require the car to be unlocked before the charging port opens. Some vehicles have a dedicated charging port release button; others open the port when the car is unlocked via the key fob or app.
Step 3 Connect the cable to the car. Insert the Type 2 connector into the car’s charging port. You should hear a click confirming the connector is locked in place. The car and charger communicate with each other at this point the car’s charging management system instructs the charger on how much power to draw and monitors the session.
Step 4 Confirm charging has begun. Most EVs display a charging indicator on the dashboard or via the instrument cluster a flashing or solid light on the charging port is typical. The wallbox unit also typically shows a charging status indicator light. Your vehicle’s app if it has one shows the charging rate and estimated completion time.
Step 5 Leave it. Nothing more is required. The car manages the charging session, reducing the charge rate as the battery approaches full and stopping automatically at 100% or at whatever charge limit you have set in the car’s settings.
For an untethered wallbox, the process is the same with the addition of retrieving your Type 2 cable, connecting one end to the wallbox socket and the other to the car, before beginning the session.
Setting a Charge Limit
Most modern electric vehicles allow you to set a maximum charge level typically between 50% and 100% rather than charging to full every time.
Battery manufacturers generally recommend charging to 80% for daily use, reserving the final 20% for occasions when maximum range is genuinely needed. Regularly charging to 100% and regularly depleting to near-zero produces slightly faster battery degradation over the long term compared to keeping the battery in the 20–80% window most of the time.
This setting is managed through your vehicle’s app or onboard menu not through the wallbox itself. Set it once to your preferred level and the car stops charging automatically at that point regardless of whether the session is set to run overnight.
Smart Scheduling: How to Cut Your Charging Cost
This is where home EV charging becomes significantly more economical than public charging and where the smart features of a modern wallbox earn their value.
Off-peak tariffs
Electricity costs vary throughout the day on time-of-use tariffs. Off-peak periods typically overnight from around 11pm to 7am carry significantly lower rates than peak daytime hours. Smart EV-specific tariffs like Octopus Intelligent, OVO Drive Anytime, and Economy 7 offer overnight rates of 7–15p per kWh compared to 25–35p during peak hours.
At 7p per kWh, a 60kWh battery costs approximately £4.20 to charge from near-empty. At public rapid charging rates of 65–80p per kWh, the same charge costs £39–£48. Home off-peak charging is typically 8–10 times cheaper per kWh than public rapid charging.
How smart scheduling works
A smart wallbox which all newly installed UK chargers must be under the Smart Charge Points Regulations 2021 can be set to begin and end charging automatically at specific times. You set the schedule once in the wallbox app, and the charger starts and stops charging without any further input from you.
The typical setup: plug the car in when you arrive home in the evening, set the charger to start at 11pm and finish by 6am, and wake up to a charged car at the cheapest overnight rate. You do not need to remember to start charging at the right time the schedule handles it.
Integration with solar panels
If your home has solar PV panels, a compatible smart wallbox can divert surplus solar generation directly to the vehicle during the day, charging the car from energy that would otherwise be exported to the grid at a low feed-in rate. Solar divert functionality is available on wallboxes including the Zappi and compatible smart chargers. It is configured once in the app and operates automatically thereafter. See our 3kW vs 7kW vs 22kW comparison guide for how power output interacts with solar integration.
How Long Will It Take to Charge?
Charging time depends on three things: how much range the battery needs, how fast the wallbox charges, and how fast the vehicle’s onboard charger (OBC) accepts power.
| Battery size | 7kW wallbox charge time (empty to full) | 3kW charge time |
| 30kWh (e.g. older Nissan Leaf) | ~4.5 hours | ~10 hours |
| 60kWh (e.g. VW ID.4 standard) | ~8.5 hours | ~20 hours |
| 77kWh (e.g. Hyundai IONIQ 5) | ~11 hours | ~26 hours |
| 100kWh (e.g. Tesla Model S Long Range) | ~14 hours | ~35 hours |
These figures assume the vehicle’s OBC accepts the full 7kW. Some vehicles have OBCs capped below 7kW, in which case the effective charge rate is limited by the car rather than the wallbox. Check your vehicle specification for the AC charge rate.
In practice, most home charging does not run from empty to full. A typical EV user adds 30–50 miles of overnight range to bring the battery from wherever the day left it back to their preferred level which takes two to four hours on a 7kW charger rather than a full overnight session.
Managing Range Anxiety at Home
Range anxiety, the fear of running out of charge, is very common in new EV owners and almost always resolves within the first few weeks of ownership once the home charging routine is established.
The key shift in mindset is treating home charging like a phone: you plug in when you get home, and you start the day with a full or nearly full battery. You are not managing fuel the way you would with a petrol car driving to a filling station when low. You are replenishing overnight from home as a default routine.
For most drivers doing under 200 miles per day, a 7kW home charger provides complete energy independence for daily use. Public charging rapid and ultra-rapid chargers at motorway services and charging hubs handles the occasional long journey where overnight charging alone is not sufficient.
How to Use Public EV Charging Stations
For longer journeys where home charging alone is not sufficient, public rapid and ultra-rapid chargers provide faster top-ups during the journey.
Finding a charge point
Zap-Map is the most widely used UK charging network mapping tool; it shows the location, connector type, speed, and real-time availability of charge points across the country. Most vehicle manufacturers also provide integrated charging network maps through the car’s navigation system or app.
Connecting at a public charger
Step 1 Confirm the connector type. Most UK rapid and ultra-rapid chargers use CCS (Combined Charging System) connectors, the standard for most new EVs sold in the UK. Some older chargers have CHAdeMO connectors for older Nissan models. Confirm your vehicle’s DC connector type before travelling to a specific charger.
Step 2 Authenticate the session. Different charging networks use different authentication methods. Some require a network-specific RFID card or app. An increasing number of public chargers accept contactless bank card payment directly at the unit check which payment method the specific network uses before arriving.
Step 3 Connect the cable. At most rapid chargers the cable is tethered to the unit pick up the connector and inserts it into the vehicle’s DC charging port. The car and charger communicate automatically to establish the maximum charging rate.
Step 4 Monitor the session. The charge point display and your vehicle’s app typically show the current charge rate, the amount of energy delivered, and the estimated time to your target level.
Step 5 Unplug when ready. Stop the session via the network app or by pressing stop on the unit. Unlock the connector from the car via the app or key fob, remove the connector, and replace it on the charger holster.
The 80% rule at public chargers
Rapid and ultra-rapid public chargers deliver energy fastest between 10% and 80% battery. Above 80%, the charging rate slows significantly as the battery management system protects cell health. For long journeys with multiple charging stops, planning stops from 10–20% up to 70–80% produces faster overall journey times than charging to 100% at each stop.
For a full breakdown of how different charging speeds compare, see our types of EV charging guide.
Running Costs: What Does Home EV Charging Actually Cost?
The cost of charging at home depends on your electricity tariff and how much you drive.
On a standard variable tariff (approximately 25p/kWh):
- Cost per full charge of a 60kWh battery: approximately £15
- Cost per mile: approximately 4–5p
On an off-peak EV tariff (approximately 7–15p/kWh overnight):
- Cost per full charge of a 60kWh battery: approximately £4.20–£9
- Cost per mile: approximately 1.5–3p
For comparison, a petrol car achieving 40mpg at 130p/litre costs approximately 8p per mile in fuel. Home EV charging on an off-peak tariff typically costs 1.5–3p per mile, a saving of 5–7p per mile over petrol, or approximately £500–£700 per year for a driver covering 10,000 miles annually.
The case for switching to a dedicated EV electricity tariff is straightforward if you charge primarily at home overnight. The setup involves switching your energy supplier or tariff; your smart wallbox handles the scheduling automatically once the tariff is in place.
Frequently Asked Questions
How do you charge an electric car at home?
To charge an electric car at home, connect the charging cable to your vehicle and your wallbox. As a backup option, a Mode 2 charging cable can be plugged into a standard 13A household socket. The car will stop charging when it reaches your preset charge limit. For regular daily charging, a dedicated 7kW wallbox on a dedicated 32A circuit is recommended because it is faster and safer than relying on a standard socket.
How long does it take to charge an electric car at home?
A 7kW home EV charger can charge a typical 60kWh battery from nearly empty to full in around 8–9 hours. For everyday driving, adding enough charge for around 30–50 miles may take approximately 2–3 hours. Using a standard 13A socket with a Mode 2 cable is considerably slower, with a 60kWh battery potentially taking around 20 hours to charge fully.
How much does it cost to charge an electric car at home?
The cost depends on your electricity tariff and the size of your EV battery. At around 25p per kWh, charging a 60kWh battery from empty to full would cost approximately £15. On an off-peak rate of around 7p per kWh, the same charge would cost about £4.20. An EV-specific electricity tariff combined with overnight scheduling can help reduce home charging costs.
Do I need a special charger to charge an electric car at home?
Not strictly. You can use a Mode 2 charging cable with a standard household socket, although this is much slower and is better suited to occasional or backup charging. For regular home charging, a dedicated 7kW smart wallbox installed by a qualified electrician provides a faster and safer solution. Newly installed smart charge points must also meet the applicable requirements of the Electric Vehicles (Smart Charge Points) Regulations 2021.
What is the best time to charge an electric car at home?
Overnight or during your electricity tariff’s off-peak period is usually the most cost-effective time to charge an electric car at home. Some time-of-use tariffs have cheaper overnight periods, often around 11pm to 7am, although exact hours depend on the tariff. A smart wallbox can schedule charging automatically so your car charges when electricity is cheaper.
Should I charge my electric car to 100% every night?
Not necessarily. Many EV manufacturers recommend keeping the battery around 80% for everyday driving to help reduce long-term battery degradation. Charging to 100% can be useful before longer journeys when you need the additional range. Depending on the vehicle, you can usually set a preferred charging limit through the car’s onboard settings or mobile app.
Can I charge an electric car from a normal plug socket?
Yes. A Mode 2 charging cable can connect an electric car to a standard household socket, typically providing around 2.3kW and roughly 8–10 miles of range per hour depending on the vehicle. This can be useful for occasional or emergency charging, but for regular use, a dedicated 7kW wallbox connected to a suitable 32A circuit is generally the better option.
How do I use a public EV charging station?
You can find public EV charging stations using apps such as Zap-Map or your vehicle’s navigation system. Check that the charger has a compatible connector, with CCS being common on many modern UK electric cars. Depending on the charger, you can start a session using an app, RFID card or contactless payment. Connect the cable, follow the charger’s instructions, monitor the charging session and stop charging when you have reached your desired level before disconnecting.
Get a Home EV Charger Installed
If you have recently taken delivery of an electric car and have not yet had a home charger installed or if you are still using a standard socket and want to upgrade to a dedicated wallbox EV Install Pro carries out OZEV-approved, NICEIC-registered home EV charger installations across London, Surrey, Kent, Essex, Hertfordshire, Berkshire, Buckinghamshire, East and West Sussex, West Yorkshire, South Yorkshire, and North Yorkshire.
Every installation includes a site survey before quoting, smart charger configuration, DNO notification, and a full Electrical Installation Certificate. For information on grants that may reduce your upfront cost, see our EV charger grants guide. For a breakdown of what installation costs, see our EV charger installation cost guide.
Contact us to arrange a no-obligation site survey and written quote.
