Why do EVs charge slower in winter, and how to speed it up.

Pulled up to a rapid charge point on a cold winter's morning and found charging takes longer than usual? You are not imagining it, and there is nothing wrong with the charger, or your car. EVs charge more slowly in cold weather. It's normal, it's temporary, and the good news is there is plenty you can do about it.

Here's why it happens, how to charge faster in winter, and how to make your range go further while it's a little bit chilly out.

Think about your phone on a cold day. The battery drains much faster and takes longer to charge, and your EV's battery behaves in much the same way.

Batteries like to be warm. In the cold, the chemical reactions inside slow down, so the battery can't safely take in energy as quickly. To protect it, your car's battery management system limits how much power it will accept.

That's the key point: your car decides how fast it charges, not the charger. Osprey chargers deliver between 50kW and 300kW, but if your battery is cold, your car may only ask for a fraction of it's peak charging power. As the battery warms up during the session, the speed should pick up.

Some, but probably less than you think, and you'll get it back in spring.

Research from What Car?, reported by Motability, suggests most EVs lose around 15 to 20% of their range in cold weather. So if your car does 250 miles in summer, expect roughly 200 to 210 miles on a cold day.

Most of that loss comes from heating the cabin and the battery working less efficiently in the cold. Lots of short trips make it worse, because the car has to warm up from cold each time.

For most day-to-day driving, you won't notice much difference. The average person in England drives around 11 to 13 miles a day. On longer winter journeys, you might need an extra stop.

Every model is different. Cars with a heat pump tend to cope better in the cold, so check real-world winter figures for your car, not just the official range.

This is the single best way to charge faster in winter.

Preconditioning means your car warms its battery on the way to the charger, so it arrives ready to charge at full speed. It uses a little range, but it can save you a lot of time at the charger.

How to do it: set an Osprey charger as your destination in your car's built-in sat nav. Osprey sites are listed in in-car sat navs, so your car knows a rapid charger is coming up and will start warming the battery for you.

Using Android Auto or Apple CarPlay? Your phone's map app doesn't tell the car where you're going, so most cars won't precondition automatically. Look for a manual option in your car's menu or app. It might be called "battery preconditioning", "battery warm-up" or "prepare for charging". Switch it on before you arrive, and check your handbook for how long it needs.

Charge after a drive, not after a long stop. Your battery warms up as you drive, so charging at the end of a journey is quicker than charging a car that's been parked outside all night.

Don't arrive too full. EVs charge fastest when the battery is lower and slow down as it fills up. Here's how the charging curve works. Just keep a sensible buffer in winter.

Stop at 80%. Charging slows a lot after 80% on a rapid charger, so it's often quicker to stop there and top up later. Should I charge my EV to 100%?

Clear the charge port. Brush off any snow or ice before plugging in. If the connector feels stiff, don't force it.

• Warm up while plugged in. Heat the cabin using your car's app before you set off. If you're on a home charger, the energy comes from the mains, not your battery.
• Heat yourself, not the whole car. Heated seats and steering wheels use far less energy than the main heater.
• Try eco mode. Most EVs have one, and it helps the battery go further.
• Check your tyres. Tyre pressures drop in the cold, which costs you range.
• Park in a garage if you can. A warmer battery starts the day more efficiently.
• Keep a bit more in reserve. On cold journeys, plan your stops with a little more charge to spare than usual.

No. Slower charging in winter is your car protecting its battery, and your normal range returns as temperatures rise. Want to know more about battery health? Read does fast charging affect battery life?

1. Motability, How to look after your EV in cold weather: https://news.motability.co.uk/motoring/how-to-look-after-ev-cold-weather
2. What Car?, Range test: how far can electric cars go in winter?: https://www.whatcar.com/news/range-test-how-far-can-electric-cars-go-in-winter/n24274
3. Renault UK, What impact does cold weather have on charging?: https://www.renault.co.uk/new-faq/electric-vehicles/impact-of-cold-weather-on-charging.html
4. Department for Transport, National Travel Survey 2025: https://www.gov.uk/government/statistics/national-travel-survey-2025/nts-2025-household-car-availability-and-trends-in-car-trips