Battery repair technology, common 18650 battery 1800 mah repair methods

　　Battery repair technology, common 18650 battery 1800 mah repair methods. With the continuous upgrading of transportation vehicles, the requirements for performance and environmental protection are constantly increasing, and power batteries - lithium batteries are gradually entering people's lives. Despite this, lithium batteries are not omnipotent. Some electric vehicle lithium batteries may also encounter some malfunctions during use, resulting in reduced power performance and endurance, etc. Therefore, the repair of lithium batteries is also very important. Let’s talk about how to repair lithium batteries.

　　Battery repair technology

　　●Battery water failure

　　The main manifestations are that the battery capacity decreases, resulting in heat loss, plate deformation, and battery expansion.

　　Repair method: Pry open the electric vehicle battery cover; open the rubber cap to expose the vent; observe whether the electric vehicle battery is dry through the exhaust port; if so, rehydrate it. In addition, it is recommended to use disposable medical syringes and double distilled water, be careful during operation, and do not add it again.

　　●Unbalanced battery failure

　　The main symptom is that one or more small batteries have problems in the battery pack, causing other good batteries to fail.

　　Repair method: For battery imbalance faults, users can find batteries with consistent capacity, voltage, self-discharge, battery resistance, etc. to use together.

　　●Sulfuric acid battery failure

　　It mainly produces white hard lead sulfate crystals on the flat plate, and it is difficult to convert the lead sulfate into active substances when charging.

　　Maintenance method: Use maintenance equipment to perform maintenance. By measuring the state of the battery, positive and negative variable frequency particle waves are continuously emitted during the charging and discharging process. After about 15 hours, the hard lead sulfate after crystallization in the battery can be removed. However, it is important to note that this usually only applies to light sulfates. If the sulfate content is higher, a new battery will be needed.

　　●Battery board softening failure

　　The main manifestation is that the surface of the positive plate gradually softens from a solid state to a paste. As the surface area decreases, the battery capacity decreases.

　　Repair method: After discharging 10.5v, the bulb discharges for 1-5 hours. Then there's the activator, activation repair. In this way, it will be possible to repair it, but in heavier cases, it will only be possible to replace it with a new one.

　　●Battery short circuit failure

　　The main manifestation is self-discharge caused by short circuit of small lead, which seriously affects the battery life.

　　Repair method: Remove lead slag and lead from the short circuit, and repair it with newly installed partition paper.

　　●Battery open circuit failure

　　The main manifestation of this phenomenon is that a disconnection at a certain point in the circuit causes the resistance to be too high and the current cannot pass normally.

　　Repair method: Use a multimeter to check the internal connections of the battery, find the broken joints, and resolder them.

　　In fact, in daily life, we should also increase the maintenance of batteries to maximize the battery life. In addition, if these 6 battery faults cannot be solved by yourself, it is recommended to go to the maintenance site for repair as soon as possible to avoid causing new problems.

　　18650 18650 battery 1800 mah repair method

　　1. Remove all your batteries after they are used up and treat them with temperature. The use time of lithium batteries will be greatly shortened when the temperature is unstable, because the battery has no electricity and a considerable part of the lithium ions already have memory electricity. In this way, part of the memory electricity can be discharged. When winter comes, put it outside for a while and then put it inside the house.

　　2. There is another way to remove the battery and leave it for about a week to slowly consume the power. You need to use a machine to completely consume the power first. Then charge it fully. I guess your current charging time must be very short. After charging it completely, disconnect it and charge it again. Repeat it several times. It will definitely be effective.

　　Three common methods for repairing lithium batteries

　　1. Use a clean eraser or other cleaning tools to gently wipe the metal contacts on the 18650 battery 1800 mah and the metal contacts on the mobile phone, which will help the charging status and the durability of the power.

　　2. Wrap the old mobile phone 18650 battery 1800 mah that automatically shuts down with plastic wrap firmly, and try to wrap it as snugly as possible, with a total of three layers inside and outside to ensure that the battery is in a vacuum state. Then, wrap three layers of newspaper outside the plastic wrap to completely seal the 18650 battery 1800 mah. Place it in the freezer layer of the refrigerator. After 48 hours, take out the battery and remove the six layers of paper wrapping one by one. There is no surface expansion or deformation of the 18650 battery 1800 mah due to freezing. After cooling for a period of time, then charge.

　　Low temperature can change the electrolyte inside the 18650 battery 1800 mah and promote chemical reactions in the battery that has just been frozen. The use process of 18650 battery 1800 mah is actually a charging and discharging process. During this time, the negative and positive charges in the battery collide with each other. The reason why batteries become less and less durable is because 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. When a 18650 battery 1800 mah is placed in a low-temperature environment, the microstructure of the lithium film and the electrolyte on the surface of the 18650 battery 1800 mah, as well as their interface, will undergo significant changes, resulting in temporary inactivity inside the battery and reduced leakage current. Therefore, after charging again, the battery life of the mobile phone will increase.

　　3. Deep discharge of the mobile phone is to achieve a deeper recharge by depleting the internal power, which requires some unconventional methods. Let the 18650 battery 1800 mah that is nearing end of life be completely discharged, and then recharge to activate the battery. The specific method is: deep discharge of the mobile phone is to achieve a deeper recharge by depleting the internal power, which requires some unconventional methods. A special device is used to connect the mobile phone to a small low-voltage light bulb, and the power inside the battery is transferred to the small light bulb until all the light is emitted. "Mobile phones need to slowly run out of power through lower voltages. Under normal circumstances, if the mobile phone is connected and is lower than the rated voltage of 3.6 volts, it will automatically shut down." After discharge, the recharged mobile phone battery can be used more long time.

　　The cycle life of lithium batteries is about more than 600 times. If the charging times are too many, the thermal movement of the molecules will gradually destroy the internal molecular arrangement microstructure, and the charge storage efficiency will gradually decrease. Once the microstructure in a 18650 battery 1800 mah is destroyed, it is impossible to completely recover. Long-term use of this method will accelerate the loss of mobile phone batteries. The price of lithium batteries is not too high. Instead of 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 extend the life of lithium batteries.

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