18650 lithium battery repair methods

In theory, the 18650 battery life is 1000 cycles. Due to the large capacity per unit density, most of them are used in laptops. In addition, the 18650 is widely used in various electronic fields due to its excellent stability in work: it is often used in high-end glare flashlights, portable power, wireless data transmission, electric thermal clothing, shoes and portable instruments and meters, portable lighting, portable printers, industrial equipment, medical equipment, etc.

The 18650 battery means 18 mm in diameter and 65 mm in length. The model number of the No. 5 battery is 14,500, 14 mm in diameter and 50 mm in length. Generally 18650 batteries are used in the industry, and there are few civilians. The common ones are used in laptop batteries and high-end flashlights.

18650 is just the size of the battery model, according to the types of batteries can also be divided into, lithium ion, 18650, 18650 of the lithium iron phosphate, 18650 (rare), nickel metal hydride is common 18650 lithium ion.

Charge and discharge principle

The working principle of lithium-ion battery refers to its charging and discharging principle. When the battery is charged, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The carbon as the negative electrode has a layered structure, and it has many micropores. The lithium ions reaching the negative electrode are embedded in the micropores of the carbon layer, and the more lithium ions are embedded, the higher the charging capacity.

Likewise, when to discharge the battery (i.e., we use the battery process), embedded in the cathode carbon layer of emergence, lithium ions and movement back to the anode. Back to the anode of lithium ion, the more the higher the discharge capacity. We usually mean by battery capacity is the discharge capacity.

18650 lithium batteries

It is not hard to see, in the process of charging and discharging lithium ion batteries, lithium ion in the motion state from the positive and negative to the anode. If we compared the image of the lithium ion battery as a rocking chair, rocking chair at both ends of the poles for the battery, and lithium ion as excellent athlete, running to and fro in the ends of the rocking chair. So, the experts gave lithium ion battery rocking-chair batteries a cute name.

18650 lithium battery repair method principle:

A lithium battery repair method: the principle of the use of the metal surface of lithium-ion batteries for a long time there will be a certain degree of oxidation and lead to cell phone battery contact with mobile phone is bad, lithium-ion batteries use time shorter, and use a rubber polishing or other clean tool can erase rust on the surface of the material, let the battery and mobile phone contact.

The principle of lithium battery repair method 2: low temperature can change the electrolyte inside the lithium battery, and promote the chemical reaction of the battery that has just been frozen. The use of lithium-ion batteries is actually a charge and discharge process. During this period, the battery inside the negatively charged and positive charge/hit each other. The battery will be more and more not after use, because in normal room temperature, the inside of the electronic kinetic energy is larger, so the battery is in active state, relatively frequent leakage situation. And put the lithium battery in low temperature environment, the lithium battery of lithium and electrolyte membrane on the surface of the microstructure, as well as their interface will change significantly, causing the battery internal temporary is not active, to reduce leakage current. So after recharging, cell phones for electricity will increase the time.

The lithium battery has a cycle life of about 600 times. If you charge more, hot games make its internal molecules arranged microstructure gradually destroyed, storage charge efficiency will decrease gradually. And "freezing process is easy to damage the internal structure of the original battery, a short period of time may increase the ability to take charge, but long-term use may not be effective.", lithium battery in the microstructure of once destroyed, it is impossible to completely recover again, long-term use of this method accelerates the wastage of the mobile phone battery.

Lithium battery repair methods of three principles: to depth discharge of mobile phone, run out of is through the internal power, to achieve a deeper level of recharging, the need to adopt some unconventional methods. Find ways to mobile phone connected to a 1.5 V small bulbs, lithium battery internal power will transfer to the small bulbs, until all light. “The phone needs to run out of power slowly through a lower voltage. Under normal circumstances, if the phone is connected below the rated voltage of 3.6 volts, it will automatically shut down.” After put the electric, recharging of mobile phone batteries can be used for a longer time.

18650 lithium battery repair method:

1, after all the electricity is used up, the battery is taken down and treated with temperature. The battery will greatly shorten the use time when the temperature is unstable, because the battery is not charged and a considerable part of the lithium ion has been used for memory. Such a method can release a part of the memory electricity. In the winter, put it outside for a while and then take it indoors.

2, there is another method: remove the battery, put it for about a week, and slowly consume the electricity. You need to use the machine to completely consume the electricity. Then fully charge, it is estimated that your current charging time is definitely very short, after the full charge, disconnect and recharge, repeated several times is absolutely effective.

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