A cabinet box comprises a plurality of independent, explosion-proof chambers. A battery wiring assembly for receiving and testing a battery is attached to an inner wall of an explosion-proof door, and an electrical connector is provided on an outer wall of the door. The assembly is placed inside a chamber, and the door seals the chamber. The temperature in each chamber is controlled independently, allowing batteries to be tested simultaneously at different temperatures. An air-circulating temperature-control module can be in a chamber, or a temperature controller with a refrigeration sheet can be integrated with the battery wiring assembly for direct battery contact. Separate, independent explosion-proof chambers effectively eliminate the possibility of a battery explosion in one chamber causing a chain-reaction explosion in another chamber. Modularity allows damaged parts to be replaced easily. An external battery testing machine can connected to the connector on each door.
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