Batteries are like humans—they prefer mild temperatures, typically between 15°C and 30°C.
Cold Weather Performance
In freezing temps, chemical reactions slow down. You might see range drop by 20-30%. This isn't permanent damage, just temporary capacity loss. However, charging a frozen battery can cause permanent damage, which is why BMS systems heat the battery before accepting a fast charge.
Winter Tip
Always use "Preconditioning" features in your EV app while the car is still plugged in at home. This warms the battery using grid power, preserving your range.
Hot Weather Risks
Heat is the silent killer. Sustained exposure to high temperatures (above 40°C) causes permanent chemical degradation. This is why liquid-cooled batteries (like in Teslas) generally last much longer than air-cooled ones (like early Nissan Leafs) in hot climates.
