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release time:2023-10-07
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1. Gently wipe the metal contacts on the lithium-ion battery and the metal contacts on the phone with a clean eraser or other cleaning tool, which helps with charging conditions and long-lasting power.
2. Wrap the lithium ion battery of the old mobile phone that automatically shuts down tightly with cling film, and try to wrap it as snugly as possible. 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 cling film to completely seal the lithium-ion battery. Put it into the freezer layer of the refrigerator, and after 48 hours, remove the battery. Remove the six layers of paper film wrapped around it one by one, and the lithium-ion battery did not experience surface expansion or deformation due to freezing. After cooling for a period of time, then charge.
3. Thoroughly discharge the lithium battery that is close to being scrapped, and then recharge and activate the battery. The specific method is to perform deep discharge on the phone, which is to achieve a deeper level of recharging by depleting internal electrical energy, using some unconventional methods.
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