Calendric aging—also known as calendar aging—refers to the degradation of a battery over time, independent of its active usage or cycling. It occurs simply due to the passage of time under specific storage or standby conditions, especially when a battery is charged and stored.
How to Reduce Calendric Aging:
Store batteries at lower SoC (e.g., 30–50%)
Keep in cool environments (typically 15–25°C)
Avoid prolonged storage at full charge or high temperature
