Frequent rainy weather shortens the lifespan of lead-acid batteries in solar systems. Chronic undercharging leads to stratification (acid concentration differences in flooded batteries) and plate sulfation. Over years, capacity fades, and replacement cycles increase.
In coastal areas, salt-laden moisture worsens terminal corrosion. Even sealed batteries suffer from gradual degradation due to insufficient cycling.
Longevity Solutions:
- Oversize the battery bank to reduce depth of discharge.
- Implement regular maintenance checks.
- Consider lithium-ion alternatives if weather extremes are common.
