What are the common repair methods for mobile phone batteries?

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 lasting power. The principle of lithium battery repair method one: the metal surface of the lithium battery that has been used for a long time will be oxidized to a certain extent, resulting in poor contact between the mobile phone battery and the mobile phone. Remove the rusty material on the surface and make the battery contact with the mobile phone better. 2. Wrap the old cell phone lithium battery that automatically shuts down 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 newspapers 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 battery and remove the six layers of paper film wrapped one by one. The lithium battery has no surface expansion or deformation due to freezing. After cooling for a period of time, then charge. The low temperature can change the electrolyte inside the lithium battery and promote the chemical reaction of the battery that has just been frozen. The use process of lithium battery is actually a charge and discharge process. During this period, the negative and positive charges in the battery collide with each other. The reason why the battery is becoming less and less useful is because the kinetic energy inside the electronics is relatively large at normal room temperature, so the battery is in an active state and leakage is relatively frequent. When the lithium battery is placed in a low-temperature environment, the microstructure of the lithium film on the surface of the lithium battery and the electrolyte, as well as the interface between them, will change significantly, causing the battery to become temporarily inactive and reduce the leakage current. So after recharging, the standby time of the phone will increase. 3. Let the lithium battery that is close to being scrapped completely discharge, and then recharge and activate the battery. The specific method is: deep discharge of the mobile phone is to achieve a deeper recharge by depleting the internal electric energy, which requires some unconventional methods. Use a specific device to connect the mobile phone to a low-voltage small light bulb, and the power inside the battery will be transferred to the small light bulb until all is discharged. The mobile phone slowly runs out of power through a lower voltage. Under normal circumstances, if the mobile phone is connected to the rated voltage of less than 3.6 volts, it will automatically shut down. After the battery is discharged, the mobile phone battery that is recharged can be used for a longer time. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What are the repair methods for lithium battery packs and electric vehicle lithium battery packs?