That's good. When the mobile phone electrical panel is used for a long time, the standby time of the electrical panel will become shorter and shorter. You can wrap the electrical panel in newspapers and put it in the refrigerator. after two hours and wait for it to return to normal temperature, then put it back in the refrigerator, repeat this about three times, you can increase the standby time of the cell phone battery.
Who taught you this? This method simply won't work.
After rechargeable batteries fail, some can be repaired, but their performance has deteriorated and some cannot be repaired.
To repair a rechargeable battery, you need to use a special instrument called a “battery repair instrument”; there is also a more advanced charger that can also be repaired. This charger not only has thecharging function, also comes with a battery repair function.