Will your refrigerator bring your lithium batteries back to life?

Recently, there was a rumor that lithium batteries that were about to be scrapped were frozen in the refrigerator for three days, and they could be brought back to life and resumed use. Is it really that good?

Lithium batteries for laptops, which may make some sense for mobile phones(I'm not sure), are not nickel-metal hydride batteries commonly used in ordinary cameras or whatever. In fact, there is evidence that deep charging and discharging is indeed effective for nickel-metal hydride batteries, and freezing is equivalent to deep charging and discharging of batteries. So it should also be effective(of course, few people will take the huge risk that the battery may explode in order to save a few dry batteries). However, the aging of lithium batteries is generally caused by the disintegration of the core material and is irreversible.

The shell net gave me too little time to search for a scrap battery to do the experiment myself. And because I have more than 50 % of the certainty that this will cause permanent damage to the battery, so I am really reluctant to take the battery to try, so I have to collect and collate information on the Internet.

First of all, I noticed that this incident was said to have been tested on the Beijing TV "Life Survey" column. The result was: Useless! But now that experts are flooding, the TV station will find an expert to demonstrate casually and then say that it is useless. Is it really useless? Then why are there so many people on the Internet?

I think we should look for people who say they're useful. Skip the plagiarized postings and the lack of evidence. The earliest experiment I could find on the domestic Internet was a 2005 post called "the resurrection of zombies in notebook lithium-ion batteries." (See Http://www.pxue.com/html/311.html. Yes, I know this is not the original post. The post clearly stated that it was transferred from the specialized network(51nb.com), but for some reason, the original post on the specialized online has disappeared. @ Xiaoyuan listening to the wind students, your entry point and I really coincide! ))

It is worth noting that the author of the article clearly pointed out that this is the method he found to restore cell phone batteries from a mobile phone forum in Hong Kong. He used it on his laptop battery. And after a preliminary search, I did not find the text on the computer lithium battery freezing method before the date of the article, so I strongly doubt that this article is the starting point for all notebook lithium battery freezing legends.

The other most important detail is not in the text, but in the comments below. The responsible transporter copied this important comment: After freezing, the battery was powered by seven experiments. The first five batteries were all powered for more than an hour, significantly higher than before the freeze. From the sixth power supply, it completely recovered to its pre-freeze state. So the recovery after freezing can only last for a short time.

A careful search of the web reveals that there are many posts(including many laymen who go cold rather than cold) that have failed the experiment. Those who declare the experiment successful and provide experimental data have a common phenomenon: After freezing, it is only easy to use in a short period of time, and then it is not. Not just the lithium batteries of laptops, but the lithium batteries of mobile phones. For example, in 2007, another book titled "Old Cell Phone Battery Can Be Repaired with a Refrigerator? The article(originally from Hangzhou's "City Express", see Http://news.sohu.com/2007020(I went here for a reason why I should be harmonious? ) 9/n2481359(Because I blew the propositional man? 78.shtml, note that no, the map of the frozen battery draft is from this article. This article was plagiarized by netizens 1,600 times, causing me to draw a lot of effort to find the original version. I do not know when the original author is marked is the minimum moral? ))

A laptop lithium battery has other components besides the core, which are control circuits and chips that determine the battery's charging status, such as protecting the battery from overcharging it. Or if you don't let the battery go. This is because the complete discharge of all the electricity will cause permanent damage to the battery tank. Therefore, the protection line will automatically cut off all contact with the outside world before the power is below the cordon. The newly purchased lithium batteries require deep charging and discharging for the first few times they are used, so that the protection system can calibrate parameters. (Of course, don't charge and discharge frequently and deeply later. It will break your life. ))

As mentioned earlier, long-term freezing is actually a process of forced deep discharge, and it can be put to the point where those protective lines are also invalidated. I strongly suspect that the freeze is actually disturbing these parameters, allowing the battery to accumulate the last force to work several times in violation of safety regulations, at the cost of permanent damage inside the battery. Of course, your batteries are already dying, and you don't care about the pain.

I just posted a guess on the Internet yesterday, and someone questioned my guess. Well, I don't really know how it works, so it could be wrong. I also went to the Internet to search the principle, the results of the search is more confused, in my years of science and reading science fiction experience, those explanations sound more like science fiction than science, I will not paraphrase.

But the lack of principle doesn't prevent us from synthesizing the data and coming to a conclusion. I know that many impatient readers have the habit of looking at the conclusion without reading the big text. So what is the result of this article, does freezing really work? I think of four words for the effect of freezing: backlighting.

In short, there is no practical value. One side is to buy a new one for a thousand dollars, the other is to freeze it for three days and then use it only five times. Are you really that cheap? And, of course, I 'd like to conclude by saying that this is about the dying lithium batteries of the resurrected notebook(and probably the cell phone). We're talking about the resurrection, not the collection, not the other kind of battery. If it is a nickel-metal hydride battery or nickel-cadmium battery, because of different principles, it will work in some cases. I'm not talking about the button battery on your watch, either. Well, there's not enough data to tell.

The page contains the contents of the machine translation.