What are the repair methods and steps for mobile phone lithium batteries?

There are three common methods for repairing lithium batteries in mobile phones: 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 lithium battery that is close to being scrapped completely discharge, and then recharge the battery to activate it. 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 small low-voltage 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 recharged mobile phone battery can be used for a longer time. Steps/Methods 1 Mobile phone lithium battery repair-introduction to the freezing therapy process: 2 The original lithium battery bought in April 2009 was used as the experimental object. The lithium battery has been used for nearly two years. Under normal use, the standby time of this mobile phone can be maintained for about one day. If there are more calls, the duration of the battery will be shorter. If the average talk time for each call is 3 minutes, and the phone is answered or dialed 10 times, the battery will be in jeopardy. 3 Before the test, turn off the phone and turn it on again after the battery is fully charged. After that, I don’t use this phone to answer or make any calls, nor do I send or receive text messages. In the absence of any interference, the mobile phone is quietly standby, and it is completely out of power after nearly 3 days. 4 Enter the experimental stage: Put the lithium battery of the mobile phone equipped with the whole body into the freezer compartment of the refrigerator (to prevent the lithium battery from getting damp, first wrap the mobile phone firmly with plastic wrap, and try to be as compliant as possible. A total of three layers are required. Make sure that the lithium battery is in a vacuum state. Then, wrap three layers of newspaper on the plastic wrap to completely seal the cell phone battery). After 48 hours, the lithium battery was taken out, and the six layers of paper film wrapped around the battery were removed one by one. The battery did not swell or deform due to freezing. After cooling for a period of time, put the lithium battery into the phone to fully charge it and turn it on. In the same situation, the phone that would have automatically shut down on the third day only lost one cell on the screen. One week later, there is still one cell remaining on the phone screen. It was not until the ninth day that the phone sounded a warning tone due to insufficient battery power. 5 The performance before and after the cryotherapy test verifies one point: the battery that has been frozen for the first time can extend the standby time of the phone. But freezing is not the elixir of immortality for mobile phone batteries, long-term use will damage lithium batteries. 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 problems are facing lithium-sulfur batteries?