The state has clearly stipulated that the power batteries of pure electric vehicles manufactured after 2016 must meet the warranty period of 8 years or 120,000 kilometers, and the battery degradation must meet the requirements of "no more than 10% degradation after 500 charge-discharge cycles and no more than 20% degradation after 1,000 charge-discharge cycles".
In other words, battery lifespan isn't a major concern, but to ensure a higher quality driving experience in daily use, it's still necessary to understand essential battery maintenance knowledge. Specific maintenance points are as follows:
1. Avoid prolonged storage at extremely high or low temperatures.
Avoid storing batteries in environments above 60℃ or below -30℃ for extended periods. "Extended period" is defined as 8 hours or 24 hours or more. Firstly, this accelerates battery degradation and easily leads to a decrease in battery capacity. Secondly, high temperatures increase the risk of spontaneous combustion.
2. Do not completely drain the battery before recharging.
Avoid letting the battery drain completely (0%), as this may permanently reduce battery life. Charging when the battery is low is counterproductive; the battery performs best when charged regularly.
Excessive discharge is extremely damaging to lithium batteries, and the damage is irreversible. It's important to note that some electric vehicles cannot be directly recharged after their battery is completely depleted; they require an external power source to unlock. Therefore, it's safest to avoid recharging after the battery is completely depleted.
3. Slow charging is better for the battery than fast charging.
"Avoid frequently using high-power DC fast charging to charge the vehicle, as this will affect battery life." However, if you are in a hurry, you can choose fast charging; otherwise, try to choose slow charging, as slow charging has higher charging conversion efficiency (it takes less electricity to fully charge the same capacity battery) and is more durable.
4. Try to top up the battery every day, and periodically perform a full discharge and full charge.
Daily top-ups keep the battery in a shallow cycle, while periodically performing a full discharge and full charge can extend its lifespan. As for the charging range, there's no need to aim for a full charge; maintaining a level between 50% and 90% is sufficient to improve battery life.
