How long is the lifespan of a lithium battery? Generally, how many years is the lifespan of a lithium battery?
Release time:
2025-09-24
The lifespan of a lithium battery is generally determined by the number of charge - discharge cycles rather than time (after all, the usage frequency of each product varies. Some are charged once a day, while others are charged once a week).
The lifespan of a lithium battery is generally determined by the number of charge - discharge cycles rather than time (after all, the usage frequency of each product varies. Some are charged once a day, while others are charged once a week).
Description of the lithium battery cycle life:
Discharge the battery at a constant current of 0.5C until it can no longer be discharged. Then, charge it to the specified limiting voltage with the standard current, and let it stand for 15 minutes. Discharge it at a constant current of 0.5C until it can no longer be discharged. After the discharge ends, let it stand for 15 minutes, and then conduct the next charge - discharge cycle. Repeat this process until 500 cycles are completed. In the 501st cycle, when the battery is discharged at a constant current of 0.5C, its capacity should be ≥ 80% of the initial capacity.
A qualified lithium battery means that after 500 charge - discharge cycles, the remaining capacity is ≥ 80% of the initial capacity.
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