Unused lithium batteries can generally be stored for 1 to 2 years, and the specific time is affected by factors such as ambient temperature, battery capacity and maintenance methods.
Under ideal conditions, such as controlling temperature and humidity, and regularly testing and replenishing the power, the storage time of lithium batteries may be longer.

Ambient temperature: Temperature is one of the key factors affecting the storage time of lithium batteries.
High temperature environment will accelerate the chemical reaction inside the battery, causing the battery performance to deteriorate and even cause safety problems. Therefore, lithium batteries should be stored in a cool and dry place, avoiding direct sunlight and high temperature environment.
Battery capacity: The larger the battery capacity, the longer the storage time.
Large-capacity batteries have more energy reserves and can maintain their performance state for a longer time. However, even large-capacity batteries should be charged and discharged regularly to maintain their activity when they are not used for a long time.
Maintenance method: Correct maintenance method is essential to extend the storage time of lithium batteries. For example, regularly check whether the appearance of the battery is intact to avoid moisture, damage or short circuit of the battery. In addition, for lithium batteries that are not used for a long time, charging and discharging operations should be performed regularly to maintain their normal performance.