Gel batteries tolerate deep discharges better than flooded batteries, but frequent deep cycling still shortens lifespan.
- Recommended DoD (Depth of Discharge): 50%–70% for daily use (never below 10.5V).
- Effects of Over-Discharge:
- Plate corrosion and irreversible capacity loss.
- Difficulty recharging if voltage drops too low.
Best Practices:
- Use a low-voltage disconnect (LVD) to prevent over-discharge.
- For solar systems, set the inverter cutoff at 11.5V–12V.
- If deeply discharged, recharge slowly to avoid overheating.
Key Takeaway: Limit deep discharges to maximize cycle life.
