When using wooden pallets to store batteries place the pallets on sand or gravel?

Placing wooden pallets on sand or gravel helps improve stability and drainage, reducing the risk of moisture accumulation that could damage the batteries. This approach also minimizes direct contact with soil, preventing potential corrosion or contamination. Additionally, it provides a more level surface for safe stacking and access to the stored batteries. Proper placement is crucial to ensure the longevity and safety of the battery storage.