Three methods to repair lithium batteries:
1. Use a clean eraser or other cleaning tools to gently wipe the metal contacts of the lithium battery and the metal contacts of the mobile phone to facilitate charging. battery status and life.
2. Wrap the old lithium battery of the mobile phone that turns off automatically in plastic wrap, and try to wrap it as tightly as possible, with a total of three layers inside and outside, to ensure that the battery is in an empty state. Then wrap three layers of newspaper outside the plastic film to completely seal the lithium battery. Place it in the freezer layer of the refrigerator. After 48 hours, remove the battery and remove the six layers of wrapping paper one by one. There is no surface expansion or deformation of the lith batteryium due to frost. After cooling for a while, then charge.
3. Fully discharge the almost discarded lithium battery, then recharge it to activate the battery. The specific method is: deep discharge of the mobile phone is to achieve deeper recharge by exhausting the internal power, which requires unconventional methods. A special device is used to connect the cell phone to a small low-voltage bulb, and the energy in the battery is transferred to the small bulb until all the light is emitted. "Cell phones must slowly drain due to lower voltages. Under normal circumstances, if the cell phone is connected and is lower than the rated voltage of 3.6 volts, it will automatically turn off after discharge, the battery of the mobile phone recharged." can be used longer.
Principles ofs three lithium battery repair methods:
Principle of the first lithium battery repair method: The metal surface of lithium batteries used for a long time will be oxidized to a certain extent. , causing the cell phone battery. If the contact between the cell phone and the mobile phone is not good, the life of the lithium battery will be shortened. Use a rubber scraper or other cleaning tools to remove rusty material on the surface and. improve the contact between the battery and the cell phone.
The principle of the second lithium battery repair method: Professor Ye Gaoxiang from the Department of Physics of Zhejiang University has a professional explanation of the "cold therapy" of this battery lithium battery: "Low temperature may cause the electrolyte inside the lithium battery to change, favoritesant the chemical reaction of the battery which has just been frozen. The process of using lithium batteries is actually a charging and discharging process. During this period, the negative charge and positive charge of the battery collide. each other, which is why the battery becomes less and less durable at normal room temperature, the internal kinetic energy of electrons is relatively large, so the battery is in an active state, and leakage is relatively frequent. placed in a low temperature environment, the microstructure of the lithium film and electrolyte on the surface of the lithium battery, as well as their interface will change significantly, causing the battery to be temporarily inactive and the leakage current to decrease. the battery life of the mobile phone will increase up to about 600 times. As the number of charges increases, the thermal motion of the molecules increases.will gradually destroy the microstructure of the internal molecular arrangement, and the charge storage efficiency will gradually decrease. Easily destroys the original internal structure of the battery, and the charging capacity can be increased in a short time.", but may not be effective after long-term use. "Professor Ye said that once the microstructure of the lithium battery destroyed, it is impossible to recover it completely. Long-term use of this method will accelerate the loss of cell phone batteries.
Principle of the third method of lithium battery repair: Deeply discharging the cell phone is the same as getting a deeper recharge by depleting internal energy, which requires unconventional methods. Find a way to connect the cell phone to a small 1.5V light bulb. The energy in the lithium battery will be transferred to the small ampoule until all the light is emitted. "Cell phones must slowly drain due to lower voltages. Under normal circumstances, if the cell phone is connected and is lower than the rated voltage of 3.6 volts, it will automatically turn off after discharge, the battery of the mobile phone recharged." can be used longer.
Repair of mobile phone lithium batteries - analysis of the whole "cryotherapy" process: the original Nokia BL-5C lithium battery purchased in April 2009 was used as an experimental subject. The lithium battery has been used for almost two years. Under normal usage conditions, the standby time of this phone can last approximately one day. If there are more calls, battery life will be shorter. If the average length of a phone call is 3 minutes and you answer or make 10 times, the battery will be at risk.
Before testing, turn off the phone and turn it back on once the battery is fully charged. From now on, this phone will no longer be used to answer or make calls, nor to send or receive text messages. Without any interference, the phone slept silently and went completely off after almost 3 days.
Enter the experimental stage: place the fully equipped mobile phone lithium battery in the freezer compartment of the refrigerator (in order to prevent the lithium battery from becoming wet, you should wrap the mobile phone tightly in plastic wrap). first, and try to wrap it as tightly as possible. A total of three layers are required to ensure that the lithium battery is vacuumed, and then three layers of newspaper are wrapped outside the plastic film to completely seal the mobile phone battery. ). After 48hours, take out the lithium battery and remove the six layers of wrapping paper one by one. There is no surface expansion or deformation of the battery due to freezing. After cooling for a while, insert the lithium battery into the phone to fully charge it and turn it on. Under the same circumstances, the phone that would have automatically shut down on the third day only lost a battery bar on the screen. A week later, there was still a battery bar on the phone screen. On the ninth day, the phone beeped due to low battery.
The performance before and after the "cold therapy" test verified one thing: the battery that was frozen for the first time can extend the battery life of the mobile phone. But freezing is not an “elixir of immortality” for cell phone batteries. Long-term use will damage thelithium batteries.
Experts remind that the price of lithium batteries is not too high, rather than laboriously repairing lithium batteries, it is more convenient and cost-effective to buy a new battery. In addition, developing good usage habits is also a shortcut to extending the life of lithium batteries.
The laptop battery died~~~Can it still be used?
The battery life of your watch depends on the nature of your watch and your battery. For example, for quartz watches, a watch battery generally needs to be replaced every 2 to 3 years, but some quartz watches use lithium batteries that can last 7 to 8 years. Although the watch battery is installed internally, you should still be careful not to frequently expose the watch to moisture while wearing it. Watches are easily affixedare affected by moisture and, once wet, the battery can easily short circuit or lose power.
How long does a quartz watch battery last? This is due to It depends on the battery life. Quartz watch batteries are made of different materials and have different lifespans, such as photovoltaic energy, which can be used for decades without changing the battery. Ordinary batteries can also be used for about 5-6 years. For example, lithium batteries, some ordinary batteries are almost enough in one or two years. However, it should be noted that watch batteries also have a shelf life. If they have passed their shelf life, they may be damaged. If it is reinstalled, it will pollute the watch circuit. The choice of the new battery must be consistent with the original battery to avoid damage to the watch circuit. If you notice aIf there is corrosion or leakage of the battery, you should promptly go to a branded after-sales repair shop or a qualified professional watch repair shop. How to do Don't worry if there is rust on the positive electrode of the lithium battery. Is it caused by a leak or moisture
No problem, you can use it!
In the battery, there are 2 parallel and 3 series 18650 cells and a protection plate. If it can be used after a fall, that means there is no internal damage.
Although there is no danger, there are always hidden dangers. Whether to change it or not depends on the strength and love of the owner.
1. There are cracks and are prone to moisture. Since the inside of the battery core is bare, it is susceptible to shorting when exposed to moisture. A short circuit can fry the computer, you mustSo be careful.
2. It is recommended to handle it with care. Internal spot welding is originally very fixed. Once broken, it may come loose. The spot welding position is generally relatively thin and brittle.
It is recommended to seal the cracks with tape and wrap the battery tightly.
Condenser microphones do not have batteries. They are phantom powered.
Take them all apart. Use gasoline and alcohol to clean them. the contact points are clean.
If you bought it, it is not cost-effective. It is best to replace it with a condenser microphone.