Impact of Hot Weather on EV Battery Performance in India

Electric vehicles (EVs) are gaining popularity in India as a cleaner and
more cost-effective alternative to petrol and diesel cars. However, one major concern for EV owners is how extreme heat affects their car’s battery life and performance.

India experiences scorching summers, with temperatures often crossing 45°C in many regions. Such extreme heat can impact EV batteries in multiple ways—reducing efficiency, lifespan, and even
safety. Let’s explore how hot weather affects EVs and what owners can do to protect their cars.

1. How Does Hot weather Affect EV Batteries?

Reduced Battery Efficiency

EV batteries (usually lithium-ion) work best in moderate temperatures (20°C to
35°C). When temperatures rise above 40°C, the battery:

 Loses charging speed (takes longer to charge).

 Drains faster, reducing driving range.

 Struggles to deliver full power, affecting acceleration.

Risk of Overheating & Battery Damage

Prolonged exposure to extreme heat can:

 Degrade battery cells faster, reducing overall lifespan.

 Increase the risk of battery swelling or failure.
 Trigger safety mechanisms, forcing the car to limit performance to
prevent damage