Since the lithium ion battery came out in 1990, due to its excellent performance, it has been rapidly developed and widely used in society, so the lithium battery manufacturers have also been developed in the largest scale. At present, most electronic products use lithium batteries, so the life of lithium batteries is a matter of great concern to consumers. The life of lithium batteries is directly affected by the state of charge and temperature.

Too high and too low state of charge has the most adverse effect on the life of lithium battery, while the number of charging and discharging cycles is secondary. In fact, most of the rechargeable times marked on the electrical appliances or batteries sold are based on 80% of the discharge. The experiment shows that for some lithium batteries of notebook computers, if the battery voltage is often 0.1 V higher than the standard voltage, that is, from 4.1 V to 4.2 V, the battery life will be halved, and if it is increased by 0.1 V, the battery life will be reduced to one third of the original life; Long term low power or no power state will make the resistance of the internal battery to the movement of electrons become greater and greater, which will lead to a smaller battery capacity. NASA set the battery power consumption of its Hubble Space Telescope at 10% of its total capacity to ensure that the battery can be charged and discharged 100000 times without updating.

Secondly, temperature also has a greater impact on the life of lithium batteries (mobile phones and other small electronic devices can be ignored). The environment below freezing point may cause the lithium battery to burn out when the electronic product is opened, while the overheated environment will reduce the capacity of the battery. Therefore, if the external power supply of the laptop is used for a long time and the battery is not removed, the battery will be in the high heat discharged by the laptop for a long time. More importantly, the battery will be scrapped soon if it is in 100% power state for a long time.

Shenzhen Topband Battery Co., Ltd.，established in 2006, is a wholly-owned subsidiary of Shenzhen Topband Co., Ltd. (002139.SZ). We focus on lithium iron phosphate batteries,with independent research and development in cells and BMS. With the ability to integrate the entire industry chain, we are committed to providing customers with one-stop lithium battery solutions and services. Our quality products are widely used in energy storage and light power.