Humidity during rainy seasons can negatively affect lead-acid batteries in off-grid solar setups. Moisture promotes terminal corrosion, leading to poor conductivity and increased energy loss. Sealed (VRLA) batteries are less vulnerable, but flooded lead-acid batteries may suffer from water dilution if excessive moisture enters the cells.
Moreover, damp environments encourage mold and dirt accumulation, which can cause tracking currents (small leakage paths) on the battery surface, further reducing efficiency.
Preventive Measures:
- Store batteries in a well-ventilated, dry enclosure.
- Use sealed batteries in high-humidity regions.
- Regularly inspect and clean battery surfaces.
