Most automakers rely on crash tests or technical presentations to showcase electric vehicle (EV) battery safety. Xiaomi, however, has chosen a far more unconventional and attention-grabbing method. In a recently released video, Xiaomi CEO Lei Jun demonstrated the durability of the company’s battery technology by dropping a watermelon from the 6th floor of their factory. The surprising result? The watermelon remained intact after the fall, protected by a “bulletproof coating” engineered to resist punctures, tears, and abrasions.

This same cutting-edge protective technology is applied to the battery pack of Xiaomi’s flagship EV, the SU7 Ultra, ensuring it remains undamaged even under extreme conditions. The demonstration highlights Xiaomi’s commitment to innovation and safety in the competitive EV market.

Xiaomi SU7 Ultra’s Advanced Battery Safety Features

The SU7 Ultra’s battery system incorporates a comprehensive suite of safety measures, including:

  • 14-Layer Protective Reinforcement: Built with ultra-high-strength steel beams, the battery pack is designed to withstand significant impacts.
  • Active Cooling System: A large 7.8 m² cooling system helps maintain optimal battery temperatures, reducing the risk of overheating.
  • Aerogel Insulation: This lightweight, highly effective material provides superior thermal protection.
  • AI-Driven Battery Management System (BMS): Real-time monitoring and management of battery performance ensure safety and efficiency.
  • Cloud-Based Monitoring: Continuous data collection and analysis enable proactive maintenance and issue detection.

These features are part of Xiaomi’s Cell-to-Body (CTB) battery integration technology, which enhances structural integrity and safety while optimizing space and performance.

Unmatched Performance and Power

Launched in China in February 2025, the Xiaomi SU7 Ultra is the company’s flagship sedan, priced at 529,900 yuan (approximately $73,110 USD). It boasts jaw-dropping performance figures, including:

  • Power Output: 1,138 kW (1,526 hp) and 1,770 Nm of torque, delivered by a combination of dual HyperEngine V8s and a single HyperEngine V6.
  • Battery and Charging: A 93.7 kWh ternary NMC battery pack sourced from CATL supports 5.2C DC fast charging, allowing the vehicle to charge from 10% to 80% in just 11 minutes. The SU7 Ultra offers a CLTC-rated range of 620 km.
  • Acceleration and Top Speed: The sedan can accelerate from 0-100 km/h in 1.98 seconds, with a top speed exceeding 359 km/h.

Design and Aerodynamics

The SU7 Ultra’s design is as impressive as its performance. With dimensions of 5,115 mm (length) / 1,970 mm (width) / 1,465 mm (height) and a 3,000 mm wheelbase, the sedan combines sleek aesthetics with functional aerodynamics. Key features include:

  • Massive Rear Spoiler: Measuring 1,560 mm in width with a 240 mm cord length, the spoiler works in tandem with an active rear diffuser to generate 285 kg of downforce at high speeds.
  • Speed Limiter: To ensure safety, every SU7 Ultra comes with a factory-installed limiter, capping the top speed at 140 km/h and power output at 900 hp. Drivers can unlock the full 1,526 hp after covering more than 300 km.

A Bold Statement in the EV Market

Xiaomi’s watermelon drop demonstration is more than just a marketing stunt—it’s a bold statement about the company’s confidence in its EV technology. By combining innovative safety features, cutting-edge performance, and striking design, the Xiaomi SU7 Ultra positions itself as a formidable contender in the luxury EV segment. As Xiaomi continues to push boundaries, the automotive world will be watching closely to see how this tech giant reshapes the future of electric mobility.