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How Heat Affects EV Batteries

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  • Jun 18, 2024
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How Heat Affects EV Batteries

1. Range Loss:

   - EVs lose only 2-5% of their range in temperatures below 90°F (32°C).

   - However, scorching weather (above 95°F or 35°C) can lead to a significant range reduction of 20-30%.

   - Robust thermal management systems help keep batteries cool and safe.


2. Battery Efficiency:

   - Heat accelerates chemical reactions inside the battery, making it less efficient.

   - Rolling resistance of tires also increases in hot weather, further stressing the battery.


3. Air Conditioning (A/C):

   - Using A/C during normal summer conditions won't significantly reduce range.

   - Extreme heat, however, may cause some loss.

   - A/C has less impact on range than a resistance heater.

   - Pre-cooling your EV while plugged in helps maintain range.


4. Best Practices:

   - Keep your EV battery charged to help maintain thermal management.

   - Avoid leaving your car in the hot sun for extended periods.

   - If you must park for a week (e.g., at the airport), choose a sheltered spot.

   - Maintain lower interior  temperature by installing good quality Window Tint.


5. Climate Impact:

   - Driving an EV contributes less to climate change compared to fossil fuel-powered vehicles.

   - EVs play a crucial role in combating climate change.


Remember, EVs are a step toward a greener future, but proper care in extreme heat ensures optimal performance!

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