Why is the battery of mobile phones becoming insufficient?

Increased power consumption of smartphones Strictly speaking, mobile phone battery technology has actually improved, but this improvement is offset by the power consumption brought about by the improvement of chip performance; and the increasing size of the screen has also increased the demand for power consumption. The battery of smartphones has slowly increased from less than 2000mAh. In 2019, most of Android can achieve 3500mAh capacity, and some products can reach 4000mAh. Although mobile phones in the Nokia era were very durable, in fact the battery capacity was usually around 1000mAh; a few could reach a capacity of 1500mAh. The reason for the long battery life of the functional machine is its low power consumption and slow power consumption, so the standby time is relatively long. After the announcement of the Apple iPhone, large-size touch screens have become a new form of mobile phones. The mobile phone screen is precisely the power-hungry consumer. In the past, a feature phone can be used for several days; but when the screen becomes a smart phone, the screen becomes larger and the power consumption is fast. The large performance improvement and large screen size have led to shorter battery life of mobile phones. Power banks have become one of the most important ways for new mobile phones to last. Compared with traditional battery technology, the current lithium battery has many advantages: the battery capacity is larger than the previous battery, and the life is longer. So why are today's smart phones so durable? Because the battery life is not static, it will be worn out after a long period of use. Under normal use, the loss of the battery is related to the number of cycles of discharge (charging cycle), and most lithium batteries can have about 80% of the original battery capacity after about 500 cycles. Simply put, a part of lithium ions in a lithium battery will become lazy during the reaction process, attaching to the surface of the graphite structure, forming lithium dendrites, and no longer participating in the process of charging and discharging, resulting in a decrease in battery capacity. And this attenuation will accumulate as the number of uses increases, which is one of the main reasons why you think the battery is becoming less and less durable. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the characteristics and usage of hydrogen fuel power batteries