Lithium batteries usually have a lifetime of 2 to 3 years.
The batteries should be stored at room temperature, charged to about 40-50% of capacity. We recommend that the batteries be charged every 3 months while storing To prevent over-discharge.
Rechargeable Lithium-Ion batteries have a limited life and will gradually lose their capacity to hold a charge. This loss of capacity (aging) is irreversible.
Lithium-Ion batteries continue to slowly discharge (self-discharge) when not in use or while in storage. Routinely check the battery's charge status.