XING Mobility has introduced the BBx800, an 800-volt high-voltage direct current (DC) backup battery unit and power rack featuring full immersion-cooled technology. The product line, announced December 11, 2025, specifically targets backup power needs in artificial intelligence (AI) data centers—marking XING Mobility’s entry into the data center sector after a history of applications in electric vehicles and energy storage systems. The BBx800 rack system is intended to meet high safety, efficiency, and power density demands reported by XING Mobility for hyperscale operators and cloud infrastructure providers.
The BBx800 employs XING Mobility’s IMMERSIO full immersion-cooling technology, directly submerging each battery cell in an insulating fluid to sustain a temperature range of 25–27°C. This design minimizes the risks of thermal runaway and is engineered for stability under high-voltage, high-power scenarios, including rapid load changes and peak computing periods. Each BBx800 module (2 OU) supports flexible ±400V or 800V configurations. A 20 OU rack can deliver 1 megawatt for three minutes or peak output of 1.2 megawatts for 90 seconds, addressing the backup power requirements common in high-density AI workloads.
XING Mobility states that the BBx800’s safety and reliability have been validated through UL9540A testing, and the modular, hot-swappable design provides N+1 redundancy. It comes with a 10-year performance warranty, and its integrated rack and cooling setup fits standard data center rack infrastructure to streamline deployment. The company emphasizes that the system is designed for 24/7 operation, including during maintenance or expansion.
The company reports that its experience in high-voltage battery applications—from electric vehicles to heavy industrial and energy storage systems—positions it to meet the stringent safety and performance demands required in the data center environment, including resistance to extreme test scenarios such as overcharging and penetration events.
XING Mobility has also announced a strategic partnership with Acbel Polytech Inc. to further develop high-voltage DC power distribution for data center environments. The companies aim to jointly explore technical advancements and application development related to energy efficiency and high-voltage DC architectures in AI data centers.
Royce YC Hong, Founder and CEO of XING Mobility, said, “XING Mobility has long cultivated expertise in electric vehicles, heavy industrial machinery, and energy storage systems, successfully meeting stringent requirements for high voltage, high power, and ultimate safety. AI data centers face the same challenges, requiring both efficiency and safety in high-density computing environments. For us, this is a familiar territory, simply extended from ground to cloud. Combining our unique high-voltage immersion-cooled technology with Taiwan’s comprehensive supply chain advantages, and partnering with power solution leaders like Acbel Polytech, we hope to continue creating innovation momentum for Taiwan at the intersection of energy and technology.”
Source: XING Mobility
