Understanding the Charge Cycle and Capacity Degradation
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last.
If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life. A partial discharge reduces stress and prolongs battery life. Elevated temperature and high currents also adversely affect cycle life. Elevated temperature hastens capacity loss, and the capacity cannot be restored.