By the HomeEVCharger.co.uk – The UK's Independent EV Charging Guide Team · Updated May 2026 · Independent, reader-supported

How Long Does It Take to Charge an EV at Home UK? Full Charging Times Guide

How long it takes to charge an electric vehicle at home depends on three things: your battery size, how much you've already used, and which charger you've installed. A 50 kWh battery might take 10 hours on a 3 kW charger or just 3 hours on a 22 kW one. The difference between choosing the right charger and the cheapest one is literally hours of your week back. This guide shows you how to calculate charging times for your situation and gives real numbers for cars that matter.

How to Calculate Your Charging Time

The maths is straightforward. Take your battery's usable capacity in kilowatt-hours (kWh), divide by your charger's power output in kilowatts (kW), and you get hours. Subtract what you've already used.

Formula: Charging time (hours) = Usable battery capacity (kWh) ÷ Charger output (kW)

Real example: If you drive a Nissan Leaf with a 40 kWh battery and it's completely flat, charging from empty to full on a 7 kW charger takes roughly 5.7 hours. Same battery on a 22 kW charger? About 1.8 hours.

Note that charger efficiency isn't 100%, so actual times run 5–10% longer than the maths suggests. Older cars with onboard chargers capped at lower outputs are slower too. A Nissan Leaf charges at maximum 6.6 kW even if you have a 22 kW wallbox — the car's hardware can't accept more.

Charging Times by Charger Type

3 kW (single-phase home charger)

Cheapest option, often works with existing electrics. Suitable if you have short commutes or charge overnight.

• Nissan Leaf (40 kWh): ~14 hours empty to full
• Tesla Model 3 (54 kWh): ~18 hours empty to full
• VW ID.4 (62 kWh): ~21 hours empty to full
• Polestar 2 (75 kWh): ~25 hours empty to full

A 3 kW charger adds roughly 15–20 miles of range per hour. Fine for topping up overnight, but planning ahead is essential.

7 kW (three-phase or 32A single-phase)

Standard for most UK home installations. Balances speed and cost.

• Nissan Leaf (40 kWh): ~6 hours empty to full
• Tesla Model 3 (54 kWh): ~8 hours empty to full
• VW ID.4 (62 kWh): ~9 hours empty to full
• Polestar 2 (75 kWh): ~11 hours empty to full

At 7 kW you can charge overnight and wake up full, even with a larger battery.

22 kW (three-phase 32A)

Fastest practical home charger for most people. Requires three-phase supply.

• Nissan Leaf (40 kWh): ~2.5 hours empty to full
• Tesla Model 3 (54 kWh): ~3 hours empty to full (limited by car to 11 kW)
• VW ID.4 (62 kWh): ~2.8 hours empty to full
• Polestar 2 (75 kWh): ~3.4 hours empty to full

Note: Older cars and smaller batteries can't use the full 22 kW. A Tesla Model 3 Standard Range maxes out at 11 kW on home chargers, so you're not gaining much speed above 7 kW unless you own a newer model with higher capacity.

Why Real Charging Takes Slightly Longer

Batteries slow down as they get fuller. A car might pull 7 kW from empty to 80%, then drop to 4–5 kW for the final 20%. Ambient temperature matters too. Cold winter charging is 20–30% slower. Charger losses and inefficiency in the car's onboard converter add another 5–10%.

The times listed above are realistic average cases, not optimistic best-case scenarios.

Practical Tips for Faster Home Charging

Install a 7 kW charger, not 3 kW. The extra cost pays for itself in saved time. Unless you're certain you have single-phase supply and no way to upgrade, a 7 kW charger is the sensible baseline.

Check your car's maximum acceptance rate. Older EVs (pre-2019) cap out at 3.6–6.6 kW. A 22 kW charger won't help. Ask the manufacturer or check your handbook.

Charge during off-peak if you're on Economy 7 or a time-of-use tariff. You might save 30–40% on electricity costs, though it means charging overnight.

Avoid charging in very cold weather if you can. Preheat the battery while plugged in (many cars do this automatically) or park in a garage. Summer charging is significantly faster.

Top up to 80% most days, not 100%. Batteries degrade slightly faster if you repeatedly charge to 100%. For daily use, 80% is the sweet spot and typically takes half the time of a full charge.

What Comes Next

Knowing your charging times helps you pick the right charger for your situation. If you're looking at installation, you'll want to compare different models — installation costs, app features, warranty, and ongoing reliability vary wildly. The best charger for you depends on your car, your supply, and how you drive.

Your next step is reviewing actual home charger options for your needs and budget.