The lifespan of lithium batteries is a relatively complex issue as it is influenced by multiple factors. We need to clarify that the lifespan of lithium batteries usually refers to their cycle life and calendar life.
1. Cycle life: This refers to the number of charging and discharging cycles that a lithium battery can withstand before its capacity decays to a specified value (such as 80% of its initial capacity) under specific charging and discharging conditions. The cycle life is closely related to the design and manufacturing quality of the battery, usage conditions (such as temperature, charge and discharge rate, etc.), and storage conditions. Generally speaking, high-quality lithium batteries can withstand hundreds or even thousands of charge and discharge cycles.
2. Calendar lifespan: This refers to the time that a lithium battery takes from production to being unusable (regardless of whether it has undergone charge and discharge cycles). The lifespan of the calendar is related to the self discharge rate of the battery, storage conditions (such as temperature, humidity, etc.), and whether the battery is fully charged or empty. Under ideal conditions, the calendar life of lithium batteries can reach several years, but in practical use, their calendar life may be greatly shortened due to various factors.
It is difficult to give an exact number regarding the lifespan of lithium batteries, as they are influenced by various factors mentioned above. Generally speaking, high-quality lithium batteries can have a cycle life of several years under normal usage conditions (such as appropriate charging and discharging, moderate storage temperature, avoiding overcharging and overdischarging, etc.), and their calendar life may also reach several years. However, if the battery is used improperly or stored under harsh conditions, its lifespan may be greatly shortened.
The lifespan of different types of lithium batteries (such as lithium-ion batteries, lithium polymer batteries, etc.) and different brands and models of lithium batteries may also vary. When selecting and using lithium batteries, it is best to refer to their specific specifications and manufacturer's recommendations.
The lifespan of lithium batteries is a complex issue that is influenced by multiple factors. In order to extend the lifespan of lithium batteries, it is recommended that users follow the manufacturer's usage and storage recommendations to avoid adverse conditions such as overcharging, overdischarging, and high-temperature storage.