Many solar battery packs do work, but their performance can vary. User experiences show that charging efficiency often decreases in direct sunlight. For reliable power, consider traditional power banks or hybrid options that also use. For now, my immediate need is for a battery cabinet to hold 6 or 7 Chevy volt 16s modules. I have considered “fireproof cabinets” that are typically used to store paints, chemicals, etc. Picking a cabinet with UL 9540. Whether you're using lithium-ion or lead-acid batteries, the right enclosure does more than just hold your system together—it protects it from weather, overheating, unauthorized access, and even fire risks. This design also simplifies relocation. Use only steel, powder-coated finishes, and durable hinges. Avoid plastic or flammable components.