30C Heatwave: Tips to avoid damaging your EV when charging


With the weather maps predicting ‘highs of 30C and a UK mini-heatwave this week”. This may be a problem for over a million EV users on UK roads. One in every 32 cars now comes with a plug.

Research has found high temperatures can reduce battery capacity, resulting in a shorter range and lower battery performance. They can also cause batteries to degrade faster, resulting in shorter battery life.

So, with this in mind, EV charging expert Chris Moniz at Volta EV has given his advice on charging your EV in warm weather and how to avoid this!

“Extreme heat can affect the performance and lifespan of the EV’s battery and the charging equipment. Here are some tips to safely charge your EV during this heatwave:

  • Choose the right time to charge: Try to charge your EV during the cooler parts of the day, such as early morning or late evening, to minimise the heat stress on the battery.
  • Use a shaded area: Park your EV in a shaded area or use a car cover to protect it from direct sunlight. This can help reduce the interior temperature and minimise the strain on the battery.
  • Avoid fast charging: High-speed or fast charging generates more heat, harming the battery’s health, especially in extreme heat conditions. Opt for slower charging when possible.
  • Precondition the battery: Some EVs have a feature called battery preconditioning, which allows you to cool down or warm up the battery before charging. This can help optimise the battery’s performance and charging efficiency.
  • Monitor battery temperature: While charging, keep an eye on the battery temperature. Most EVs have a built-in system to monitor battery temperature and automatically adjust the charging rate if the temperature gets too high.
  • Maintain proper ventilation: Ensure that the charging equipment and the surrounding area have proper ventilation to dissipation heat.
  • Keep the interior cool: If possible, use the vehicle’s climate control system to keep the interior cool while charging. This can also help reduce the overall temperature of the battery.”


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