Black Shark 6 Ultra: Xiaomi’s Liquid Cooling System for iPhones
Xiaomi’s gaming division, Black Shark, is taking a novel approach to smartphone thermal management with the launch of the Black Shark 6 Ultra, an external liquid cooling system designed to keep phone processors running at peak performance for longer. The system, currently available in China, aims to address the challenge of heat buildup during intensive mobile gaming sessions, particularly on demanding titles like Genshin Impact and Warzone Mobile.
While external phone coolers aren’t modern – several accessories already exist – the Black Shark 6 Ultra distinguishes itself with its compatibility with MagSafe-enabled devices, including iPhones. This is achieved through a magnetic attachment plate that secures the cooler to the back of the phone. The system incorporates a pump, radiator and fan to actively dissipate heat, a feature that goes beyond passive cooling solutions.
How the Cooling System Works
The Black Shark 6 Ultra utilizes a liquid cooling system, a technique commonly employed in high-performance desktop computers. A pump circulates coolant through a radiator, where heat is transferred to a large surface area and then dissipated by a fan. In this case, the pump operates at over 1,200 RPM, driving coolant through a radiator spanning 165,900 mm². A seven-blade fan further enhances heat dissipation. Xiaomi claims this system can reduce the phone’s operating temperature by as much as 56°C, theoretically bringing surface temperatures down to -31°C under heavy load. This is achieved, in part, through the apply of a Thermoelectric Cooler (TEC) – also known as a Peltier cooler – which uses electricity to transfer heat from one side of the device to the other. Cybernews notes that phone coolers are becoming increasingly sophisticated, with active cooling systems gaining popularity.
Compact Design and Real-World Implications
Despite its functionality, the Black Shark 6 Ultra remains relatively compact, measuring 12.8 mm thick and weighing 69 grams. This portability is crucial for a device intended to be used on the go. The inclusion of a real-time temperature display via an LED screen allows users to monitor the cooling system’s performance. The price point of around 60 euros positions it as a premium accessory aimed at dedicated mobile gamers.
The choice to showcase the cooler with an iPhone 17 Pro in promotional materials is noteworthy. This echoes a recent strategy by Xiaomi with its external batteries, which were also designed with iPhone compatibility in mind. Frandroid highlighted this deliberate design choice, suggesting a broader effort to appeal to iPhone users.

Target Audience and the Rise of Mobile Gaming
The Black Shark 6 Ultra is clearly targeted at a specific niche: competitive mobile gamers who demand sustained performance from their devices. As mobile gaming continues to grow in popularity, with titles like Genshin Impact and Warzone Mobile pushing the limits of smartphone hardware, the need for effective cooling solutions is becoming increasingly apparent. The ability to maintain consistent frame rates and prevent thermal throttling can provide a significant advantage in competitive play. News sources indicate that Xiaomi is actively expanding its range of gaming accessories, reflecting the growing market for mobile gaming peripherals.

Looking Ahead: Thermal Management and Smartphone Evolution
The launch of the Black Shark 6 Ultra highlights a growing trend in smartphone thermal management. As processors develop into more powerful and devices are used for increasingly demanding tasks, maintaining optimal operating temperatures is crucial. Future developments in this area may include more integrated cooling solutions within smartphones themselves, potentially utilizing vapor chambers or advanced heat pipe technology. The effectiveness of external coolers like the Black Shark 6 Ultra will likely be evaluated by independent reviewers and the gaming community, providing valuable data on their real-world performance and benefits. Further research will be needed to determine the long-term impact of active cooling on smartphone component lifespan and overall system reliability.