Battery depth of discharge

Typical Gel Cell Cycling Ability

Verses

Depth of Discharge

Capacity Withdrawn Typical Life Cycles

10% 3800

25%1500

50% 650

100% 300

As you can see the shallower the average discharge the longer the battery life.

This is why it is important to size a battery system to deliver at least twice the average power required.

You may experience longer or shorter life based on application/charging time temperatures.