Today, electronic products are developing rapidly. In just 10 years, many electronic products have become increasingly intelligent, with more powerful functions and added features. Consequently, battery usage has become a crucial concern for consumers. To improve product quality and meet consumer demands, major electronics companies are constantly developing new materials. It has been discovered that using lithium-ion batteries instead of nickel-metal hydride batteries not only increases battery life and allows for faster charging but also stores more energy. Therefore, lithium-ion batteries are widely used in various aspects of modern cities.
Lithium-ion batteries, commonly mentioned in our daily lives, are batteries developed using the reactive chemical properties of lithium metal. The charging and discharging process of these batteries is essentially a redox reaction involving the gain and loss of electrons. Therefore, unlike nickel-metal hydride batteries, they do not have a memory effect, and you don't need to worry about the battery capacity decreasing due to incomplete charging. However, due to the reactivity of lithium metal, they are easily affected by the environment, so we need to pay attention to some issues when using lithium batteries.
Although lithium batteries are widely used in various electronic products, the correct way to use them is basically the same.
Many people believe that the first charge of a battery should be long to activate it. While it's true that lithium batteries do require a longer charging time initially, similar to nickel-metal hydride batteries, to fully charge them—generally 8-12 hours—it should not exceed 12 hours, as this could reduce battery life. However, this process is not the activation process for the lithium battery, as the manufacturer has already activated the lithium battery during its manufacturing process.
There's a common misconception that lithium batteries should be completely discharged and then fully charged to extend their lifespan. This is incorrect. A lithium battery's lifespan is essentially exhausted after 300-600 charge-discharge cycles, and these cycles are essentially complete discharge and charge cycles. Therefore, electronic devices should be charged immediately when the battery level is low, and the battery should be unplugged when it's less than 100% charged. There's no need to charge it while the device is off. Reducing the number of charge-discharge cycles shortens battery lifespan.
Furthermore, because lithium batteries have relatively low safety and are sensitive to ambient temperature, we must pay close attention to the temperature of the environment when using them. 40 to 60 degrees Celsius is the optimal operating temperature for lithium batteries, and research shows that higher temperatures tend to reduce battery life. When a battery is exposed to temperatures exceeding 60 degrees Celsius for an extended period, it is highly likely to explode, posing a life-threatening risk.
Regardless of the type of electronic product in which lithium batteries are used, their fundamental properties remain largely unchanged. When using lithium batteries, we should abandon outdated notions and pay more attention to the issues mentioned above. This will not only protect the battery in a timely manner but also minimize unnecessary damage.
