How to activate and maintain the long-lasting lithium-ion battery?

What about batteries that have not been used for a long time or whose discharge voltage has reached a very low level? Can they be activated? When it comes to activation, many lithium-ion batteries will not exist as a single cell, but in the form of a battery pack, and generally have a charging protection board, and the most important thing is the charging management IC. This IC has overcharge, overdischarge, and overcharge. For protection functions such as current and short circuit, a minimum limit is set for the discharge of lithium-ion batteries. If the battery is left unused for a long time, excessive discharge will cause an irreversible reaction, so it cannot be charged. Then sometimes you can use the activation method to give it a try. Lithium-ion batteries are generally charged with constant current---constant voltage, which means that at the beginning, they are charged with a standard current for a period of time, and when the battery voltage reaches the charging cut-off voltage, constant voltage charging is used. Therefore, you can use the DC power supply to charge for a period of time, and then switch to the original charger when the cut-off voltage is reached. Although this method is sometimes feasible, it is not always possible. After all, the battery's performance has been affected by the over-discharge of the battery, but there are also The phenomenon that the battery can be activated after being left for several years. So how to maintain the lithium-ion battery? 1. Due to the self-discharge phenomenon of lithium-ion batteries, if the battery is not used for long-term preservation, the battery voltage should not be lower than its cut-off voltage, preferably around 3.8 to 4.0V; 2. It is recommended to charge the lithium-ion battery once every six months , Keep the battery above the cut-off voltage; 3. The battery storage environment temperature and humidity should be appropriate, and operate in accordance with the specifications; 4. It is best not to charge new and old batteries, batteries of different brands, capacities, and types together or chaotically It can be charged as a battery pack. 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: What is the difference between 18650 batteries and polymer batteries? Who is safer?