How to repair and maintain the mobile phone lithium battery?

How to repair mobile phone lithium battery? 1. Use a clean eraser or cleaning tools of other materials to gently wipe the metal contacts on the lithium battery and the metal contacts on the mobile phone, which will help the charging status and the long-lasting power. 2. Wrap the old mobile phone lithium battery that is used for automatic shutdown with plastic wrap, and try to be as compliant as possible when wrapping it. There are three layers inside and outside to ensure that the battery is in a vacuum state. Then, wrap three layers of newspaper outside the plastic wrap to completely seal the lithium battery. Put it in the freezer layer of the refrigerator, after 48 hours, take out the batteries, and remove the six layers of paper film one by one. The lithium battery has no surface expansion or deformation due to freezing. After cooling for a period of time, then charge. 3. Let the nearly scrapped lithium battery completely discharge, and then recharge and activate the battery. The detailed method is: deep discharge of the mobile phone is to achieve a deeper recharge by exhausting the internal electric energy, which requires some unconventional methods. How to properly maintain lithium batteries? ①Due to the self-discharge phenomenon of lithium 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; ②It is recommended to charge the lithium battery once every six months, it is a battery Always keep above the cut-off voltage; ③The battery storage environment temperature and humidity should be appropriate, and operate in accordance with the specifications; ④It is best not to charge new and old batteries, batteries of different brands, capacities, and types together or mix them into battery packs. . 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: What are the reasons for the bulging of the battery?