Whether the battery is damaged depends on the charging method. If the traditional series or parallel charging method is used, it may cause certain damage to the battery. This is because the series mode will increase the overall charging voltage and current of the battery pack, which may lead to overcharge or undercharge of the battery, which will affect the battery life. Although the parallel mode can increase the battery capacity, if the charging voltage and current are not properly controlled, it may cause imbalance within the battery pack and affect the battery performance. In contrast, the use of advanced charging technology, such as wireless charging, smart charging, etc., can better protect the battery. These technologies can extend battery life by intelligently controlling charging voltage and current to achieve accurate charge management and avoid overcharging or undercharging the battery.
In addition, for batteries that have been used for a certain number of years, since their performance has begun to decline, charging with advanced charging technology can better protect these batteries and slow down the speed of their performance decline.
In summary, whether the rechargeable battery damages the battery depends on the charging method. The use of advanced charging technology can better protect the battery and extend its life. For batteries that have a certain service life, the use of advanced charging technology for charging is essential.