Xiaomi uses a watermelon to demonstrate SU7 Ultra's battery toughness

Until last year, Xiaomi was a company better known for its smartphones and home appliances. But now, this Chinese giant is taking the electric car market by storm. Its new flagship sedan, the SU7 Ultra, has impressive power and some innovative battery safety features. Surprisingly, rather than relying on traditional crash test videos, Xiaomi took a new approach to show off those features.

A watermelon, coated with the same protective material used in the SU7 Ultra's battery pack, was dropped from the sixth floor of Xiaomi's factory. The goal was to show how robust the battery protection is. The watermelon survived the fall without bursting. It's definitely an interesting way to demonstrate the coating's impact resistance.

The SU7 Ultra's battery system comes with several layers of protection. A 14-layer reinforcement with strong steel beams, a large 7.8 square meter active cooling system, and aerogel insulation all contribute to the battery's safety. An AI-driven Battery Management System and cloud-based monitoring add extra layers of security.

The actual battery is a 93.7 kWh ternary NMC battery pack, sourced from CATL. It supports 5.2C DC fast charging, allowing it to charge from 10% to 80% in just 11 minutes, giving you a CLTC-rated range of 385 miles.

The performance figures of the Xiaomi SU7 Ultra are nothing short of remarkable. With its dual HyperEngine V8s at the rear and a single HyperEngine V6 powering the front axle, the car produces a combined 1,138 kW (1,526 hp) and 1,305 lb-ft of torque. This allows the car to accelerate from 0-62 mph in 1.98 seconds, with a top speed coming close to 224 mph.

To make the car safer, Xiaomi has included a limiter that initially caps the top speed at 87 mph and power output at 900 hp. Drivers can unlock the full 1,526 hp after driving more than 186 miles.

The Xiaomi SU7 Ultra is a large sedan - it measures 201.4 inches in length, 77.6 inches in width, and 57.7 inches in height, with a 118 inches wheelbase. This makes it larger than the Tesla Model S or the BMW i5. The Ultra was launched in China in February 2025, with a starting price of RMB 529,900, which is just over $73,000.

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