What does "cycle count" mean in the context of battery specifications?

A cycle count refers to one complete charge and discharge process of the battery—from fully charged to fully discharged. For example, if a battery is charged to 100% and then used until it reaches 0%, that counts as 1 cycle. In practice, a full discharge is rare; for instance, using 50% of the battery twice also counts as 1 cycle. This metric helps track battery usage and health over time.