Purpose-built for commercial hubs and EV charging networks, this all-in-one system delivers zero-fire-risk immersion cooling for high-density environments. The plug-and-play architecture reduces on-site installation time by 50% while maintaining an elite cell ΔT ≤2°C to secure 13.6% cycles. Supporting seamless on/off-grid switching for uninterrupted backup power, the IP55-rated enclosure deploys flexibly in dusty or humid sites without dedicated rooms, unlocking a decade of low-maintenance, scalable profitability.