In the impression of many people, laptops, like mobile phones, only need to be charged when the battery is running low. However, recently, the topic of "always charging and using laptops" has been on the hot search list, and some netizens have expressed that "I used them incorrectly for many years". Some people may use it incorrectly because when laptops were first launched, most of them used nickel cadmium batteries or nickel hydrogen batteries, which all had the problem of "battery memory": when nickel cadmium batteries or nickel hydrogen batteries were fully charged or discharged multiple times, they would generate "memory", and then the battery would charge at lower and lower levels, causing a cliff like decline in battery capacity. Therefore, many people may feel that 'plugging in a laptop will cause the battery to become less durable'. However, with technological advancements, modern laptops generally use lithium-ion batteries. "Most of the batteries for laptops on the market today are lithium-ion batteries, which work by transferring ions between the positive and negative electrodes inside the batteries through electrolytes to generate electric energy." Meng Dezhong, associate professor of the School of Mathematics and Science of China University of Geosciences (Beijing), said in an interview that lithium-ion batteries have limits on the number of charges and discharges and self-discharge (the phenomenon of power loss when not in use), Meanwhile, its performance is greatly affected by temperature. When plugged in, laptops do not need to extract power from the battery, which can avoid excessive battery loss. If the laptop is not used for a long time, it is recommended to keep the battery level at 50-80%. Long periods of full or low battery life can cause damage to lithium-ion batteries. Another benefit of plugging in and using it is that it can achieve optimal performance for laptops. Because when the battery power of the laptop itself is insufficient to support its full load operation, problems such as degraded game graphics, video lag, and inability to run large programs may occur, and the battery life is also greatly reduced. Therefore, in order to maximize the performance of the processor, graphics card, and memory, it is actually necessary to plug it in and use it without damaging the battery. (New News Agency)