Three authoritative methods of lithium battery repair

Three methods of common phone lithium battery repair:

1. Use a clean eraser or other material cleaning tool to gently wipe the metal contact on the lithium battery and the metal contact on the mobile phone, which is conducive to the charging status and lasting power.

2. The lithium battery of the old mobile phone that is automatically shut down will be tightly wrapped with plastic wrap, and the package will be as smooth as possible. There are three layers inside and outside to ensure that the battery is in a vacuum state. Then, the film is wrapped in three layers of newspaper, making the lithium battery completely sealed. Put in the freezer layer, 48 hours later, take out the battery, one by one take out the package of six layers of paper film, lithium battery did not cause surface expansion or deformation due to freezing. Cool it for a while, then charge it.

3. Thoroughly discharge the lithium battery which is close to being scrapped, and then recharge it to activate the battery. The specific method is: deep discharge of the phone, is to exhaust the internal electricity, to achieve a deeper level of recharging, which requires some unconventional methods. A special device connects the phone to a small, low-voltage light bulb, and the power inside the battery is transferred to the bulb until all the light is released. "The phone needs a low voltage to slowly drain the power. Under normal circumstances, the mobile phone will automatically shut down if it is connected below the rated voltage of 3.6 volts. After discharging the battery, the recharged phone's battery will last longer.

Lithium battery repair for mobile phone -- analysis of the "frozen therapy" process:

The original lithium battery purchased in April 2009 was used as the experimental object. The lithium battery has been used for nearly two years, and under normal circumstances, the standby time of this mobile phone lasts about one day. If the number of calls is higher, the duration of power will be shorter. If the average call lasts three minutes, and 10 calls or calls are made, power is at stake.

Before the test, turn off the phone and switch it back on when the battery is full. After that, the phone doesn't answer or make any calls or send or receive text messages. In the absence of any interference, the phone quietly standby, nearly three days after the power completely.

Enter the experimental stage: put the fully equipped mobile phone lithium battery into the freezer of the refrigerator (in order to prevent the lithium battery from being affected by moisture, it is necessary to wrap the mobile phone tightly with plastic wrap, and try to take it as close as possible when wrapped. Three layers are needed inside and outside to ensure that the lithium battery is in a vacuum state. Then, wrap three layers of newspaper around the plastic wrap to seal the battery completely. After 48 hours, the lithium battery was removed, and the six layers of paper film wrapped outside were removed one by one. The battery did not expand or deform due to freezing. After cooling for a period of time, put the lithium battery into the phone full and boot. Under the same circumstances, the third day when the phone would have automatically shut down, the screen is less than a grid power. A week later, the phone had one battery left on the screen. By the ninth day, the phone was out of battery.

Before and after the cryotherapy test, the results confirmed that the first time the battery was frozen, it would last longer. But freezing is not an elixir for mobile phone batteries, which can be damaged by long-term use.

Notes:

The cycle life of lithium battery is about 600 times. If more charges are charged, the molecular thermal motion will gradually destroy the micro-structure of the molecular arrangement inside, and the efficiency of charge storage will gradually decrease. "The freezing process is likely to damage the original internal structure of the battery, which may increase the charge charge capacity in a short period of time, but may not be effective in long-term use." Professor ye said that once the micro-structure of lithium batteries is destroyed, it is impossible to recover completely, and long-term use of this method will accelerate the loss of mobile phone batteries.

Experts warn that the price of lithium battery is not too high, and it is more convenient and cost-effective to buy a new battery instead of trying to repair it. In addition, develop good use habits, is also a shortcut to extend the life of lithium battery.

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