World's first 800V immersion-cooled battery targets AI power demand

XING Mobility is unveiling the world’s first 800V immersion-cooled high-voltage DC backup battery system, called BBx800, designed specifically for AI data centers at CES 2026. This system leverages full immersion cooling by submerging each battery cell in an insulating fluid to maintain stable operating temperatures between 25°C and 27°C, reducing thermal runaway risk and enhancing stability under extreme loads. The compact module supports voltage configurations of ±400V or 800V, and a standard 20 OU rack can deliver peak outputs up to 1 MW for three minutes or 1.2 MW for 90 seconds, targeting short-duration backup during rapid power fluctuations and peak AI workloads. The development responds to the rising power demands of AI data centers, where per-rack power consumption has surged from around 100 kW to over 1 MW, challenging traditional 48V architectures due to current, thermal, and efficiency constraints. NVIDIA’s 2025 push for 800V