To save space, can you simply stack them on top of each other? This is a critical safety question, and the answer is a firm and clear "no," unless they are specifically designed for it. You should not store batteries by arbitrarily stacking them.
[pdf] By applying various environmental stresses such as high temperature, low temperature, humidity, and vibration, aging cabinets accelerate the aging process of battery packs, allowing predictions of their real-world performance in a shorter time.
[pdf] The first edition of UL 1487, the Standard for Battery Containment Enclosures, was published on February 10, 2025, by UL Standards & Engagement as a binational standard for the United States and Canada.
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