Do you know the important and correct charging method for lithium batteries?

1. Recharging a new battery. A new battery generally needs to be activated. After the battery is left for a period of time, it will enter a sleep state. At this time, the capacity is lower than the normal value and the use time is shortened. Lithium battery activation method is very simple, as long as 35 normal charge and discharge cycles can activate the battery and restore normal capacity. 2. The method of recharging the old battery. An old battery refers to a battery that has been charged and discharged many times, not a scrapped battery. The life of a lithium battery has nothing to do with the number of charging and discharging. It has no memory effect. No matter how you charge it, it will not affect the number of charging cycles. Therefore, do not charge the battery until it is completely empty. It is best to charge the battery as much as possible when you can charge it. The charging time should be within 2-3 hours. Of course, you don't have to be fully charged. Charging voltage. The safe working voltage range of lithium battery is 2.8 to 4.2V. Below or higher than this voltage range, the lithium ions in the battery become very unstable and even cause accidents. In order to ensure that the battery is in a safe range, a special charger is required. These chargers automatically adjust the charging method according to the current state of the battery. Charging tools. Lithium batteries should be charged with a special charger, which can guarantee the safety of charging. When the charger works, it charges the battery with a constant current. As the battery voltage increases, the charger increases the charging voltage at the same time to speed up the charging speed. When the battery reaches the 4.2V cut-off voltage, the battery only charges about 70% (not full) at this time. At this time, the charger continues to charge the battery with a constant voltage and a gradually decreasing current. When the value is less than 0.1A, the battery voltage continues to rise when the battery voltage continues to rise. Recharge regularly. Lithium batteries that have not been used for a long time should be stored in a cool and dry place in a half-charged state. Fully charged storage is dangerous, and the battery will be damaged, but without power storage, the battery may be destroyed and lose its use. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of the difference between lithium iron phosphate battery and 18650 lithium battery