Reconditioning the battery ensures that the system can accurately determine the charge in the battery.
As a battery ages, it loses capacity. When a battery no longer has capacity to protect against two power loss events, it reports the battery end of life event and it should be replaced.
A reconditioning cycle is automatically scheduled to occur approximately once every three months, but reconditioning is rescheduled or canceled if the system loses redundancy. In addition, a two-day delay is imposed between the recondition cycles of the two batteries in one enclosure.