Charging method for lithium battery to maintain life

Lithium battery maintenance and charging methods When answering questions about the life of lithium batteries, the sales staff of Computer City often say: You can charge it 100 times. If you really understand it, that's interesting. In fact, the correct statement should be that the life of a lithium battery is related to the number of recharges, and there is no vague relationship between the number of recharges. A well-known advantage of lithium batteries is that they can be recharged at a convenient time, rather than recharging after the battery is exhausted. So, what is the charge cycle? The charge cycle is when all batteries go from full to empty, from empty to full, which is different from one charge. Simply put, when you charge a lithium battery for the first time, from 0 mA to 400 mA to 600 mA, you use n mA; then charge 150 mA, use n mA; finally, you Charge 100 mA, when you charge 50 mA for the last time, the battery charging cycle will come. (400+150+50u003d600) The lithium battery uses only half of its power on the first day, and then is fully charged. If the next day is the same, that is, half of the charging time, there are two charges in total, then it is counted as one charging cycle instead of two. Therefore, it may take several recharges to complete a cycle. At the end of each charging cycle, the power will drop a bit. This is why many people who use lithium-ion mobile phones often say: This bad mobile phone can be used for four days after you buy it. Now it can only be charged once in three and a half days. . However, the reduction in power consumption is small. After many times of charging, the high-quality battery can still maintain 80% of the power. Many lithium-ion power products are still in use after two to three years. Of course, the lithium battery will eventually need to be replaced. The life of a lithium battery is generally 300-500 recharges. Assuming that the power supplied by a complete discharge is 1q, if the power reduction after each charge is not taken into consideration, the lithium battery can supply or supplement the total power of 300q-500q during its service life. We know that if you use 1/2 charge, you can charge 600-1000 times; if you charge 1/3, you can charge 900-1500 times. and many more. If the charge is random, the number is uncertain. In short, no matter how the battery is charged, the power added to 300q-500q is constant. Therefore, we can also understand that the life of a lithium battery is related to the total charge capacity of the battery, and has nothing to do with the number of recharges. The impact of deep and shallow charging on the life of the lithium battery is not significant. Therefore, when some MP3 manufacturers advertise that some MP3 models use powerful lithium batteries that can be recharged more than 1500 times, they are completely ignorant to deceive consumers. In fact, light discharge and light charge are more conducive to the development of lithium batteries. Only when the product's power module is calibrated for lithium batteries, deep discharge and deep charge are required. Therefore, the use of lithium-ion power products does not need to adhere to the process flow, everything for convenience, recharge at any time, do not have to worry about the impact on life. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the common bad phenomena of batteries?