On February 7th, according to Haichen Energy Storage news, Haichen Energy Storage recently completed the world's first large-scale open-door fire test of the ∞Power 6.25MWh 4h long-duration energy storage system equipped with kilowatt-hour level battery cells. The test results indicate that the high energy density 6.25MWh energy storage system, equipped with ultra-large capacity battery cells, demonstrates stable and controllable safety performance under extreme conditions