Does Slow Charging of EVs to 100% Affect Battery Health?

With the popularization of new energy vehicles, the choice of charging methods and their impact on battery life have become the focus of attention for numerous car owners. Among them, slow charging is a common charging method, and the impact of its charging to 100% on the battery is a concern for many car owners. Maruikel will provide a detailed analysis of the impact of charging to 100% using slow charging on the battery from multiple perspectives.

I.The Principle and Characteristics of Slow Charging

Slow charging is what we usually call regular charging that uses a relatively small current. Compared with fast charging, the charging current of slow charging is smaller, so the charging time is longer. However, slow charging also has its unique advantages. For example, it generates less heat during the charging process, and the damage to the battery is relatively small.

II.The Impact of Charging to 100% Using Slow Charging on the Battery

1. Less battery damage: Due to the small charging current of slow charging, the generated heat is also relatively low, the damage to the battery will be relatively small. Under normal use, slow charging to 100% will not cause obvious damage to the battery.
2. Avoid the risk of overcharging: The charging speed of slow charging is relatively slow, which is conducive to avoiding overcharging of the battery. Overcharging will lead to an increase in the internal pressure of the battery, thus causing potential safety hazards. Slow charging can ensure that the battery always remains within the safe range during the charging process.
3. The impact of being in a high charge state for a long time: Although charging to 100% using slow charging has relatively little direct damage to the battery, keeping the battery in a high charge state for a long time will also have a certain impact on the battery life. The dense embedding of lithium ions may cause changes in the microstructure of the electrode material, accelerating the aging of the battery. Therefore, it is recommended that car owners try to avoid keeping the battery at a full charge state for a long time when charging.

III. How to Use Slow Charging Reasonably

1. Control the charging time: Although the slow charging takes a long time, carownersstill need to pay attention to controlling the charging time to avoid overcharging the battery due to charging for too long.
2. Reasonably arrange the charging time: car owners can reasonably arrange the charging time according to his own vehicle usage needs to avoid charging for a long time without using the car.
3. Check the battery status regularly: car owners should check the battery status regularly, and replace or repair the battery in time if it is found that its performance is degraded or there are potential safety hazards.

Generally speaking, slow charging to 100% has relatively little damage to the battery, but it is still necessary to avoid keeping the battery in a high charge state for a prolonged period. Car owners should reasonably control the charging time and mode when using slow charging to extend the battery life and ensure driving safety.