Revolutionary Needle Penetration-Resistant Battery Sets New Standards Under China's Updated Safety Regulations

As urban transportation undergoes rapid electrification, electric two-wheelers are emerging as a dominant force. The implementation of China’s new mandatory standards—GB43854-2024 Safety Technical Specifications for Lithium-Ion Batteries in Electric Bicycles and GB40559-2024 Safety Technical Specifications for Lithium-Ion Batteries in Electric Balance Bikes and Scooters—has accelerated market standardization and catalyzed breakthroughs in core component technologies, particularly battery safety. In response, BAK Battery has unveiled its groundbreaking PRO-M High-Safety Battery Series, delivering dual advancements in safety and performance while fully complying with updated regulatory requirements.

Material & Process Innovations: Redefining Safety with Needle Penetration Resistance

Understanding end-users’ dual demands for safety and performance, BAK’s PRO-M series achieves industry-leading safety milestones, including passing rigorous needle penetration tests mandated by GB43854-2024 and GB40559-2024.

Key innovations driving its exceptional safety profile include:

• Heat-Resistant Composite Cathode Material: Ensures structural stability under extreme temperatures.

• Enhanced Separator Coating: Boosts thermal resistance and prevents internal short circuits.

• High-Stability Electrolyte: Suppresses interfacial side reactions for prolonged durability.

• Precision Manufacturing: Optimized slurry mixing and coating processes yield ultra-uniform electrodes, improving cell consistency and enabling high-rate charging/discharging, extended cycle life, and fail-safe operation.

Balanced Performance Upgrades: Powering Smarter, Longer-Lasting Mobility

With the electric bicycle market shifting toward premium, intelligent designs, consumers increasingly prioritize high-performance batteries. The PRO-M series addresses these demands through:

• 33% Reduced Impedance: Enabled by composite conductive agents, next-gen conductive foils, and specialized electrode architecture.

• High-Rate Discharge: Supports 5C continuous discharge (PRO-M 18650) and 4C discharge (PRO-M 21700).

• Expanded Operating Range: Stable discharge performance across -30°C to 70°C.

• Superior Energy Density: 170 Wh/kg (18650, 2.0Ah) and 180 Wh/kg (21700, 3.0Ah).

• Longevity: Over 1,000 cycles at 80% capacity retention.

Future-Proof Solutions for Diverse Applications

Beyond urban mobility, BAK’s PRO-M High-Safety Battery is poised to revolutionize sectors requiring ultra-reliable power sources, including emergency systems, security devices, and specialized equipment. By harmonizing safety, temperature adaptability, endurance, and power output, the series empowers industries to minimize operational risks and advance sustainable practices.

Looking Ahead
BAK Battery remains committed to driving innovation across its cylindrical cell portfolio. With the PRO-M series as a cornerstone, the company aims to redefine safety benchmarks while enabling smarter, greener energy solutions worldwide.

Edit by paco