BAK Battery Launches PRO-M 18650 21700 Groundbreaking New Product: High-Safety Cylindrical Lithium Battery

On February 25, BAK Battery live-streamed the industry debut of its new cylindrical lithium battery—PRO-M High-Safety Battery (18650, 21700). The product not only meets the new national standards GB43854-2024 Safety Technical Specifications for Lithium-Ion Batteries for Electric Bicycles and GB40559-2024 Safety Technical Specifications for Lithium-Ion Batteries and Battery Packs for Electric Balance Scooters and Skateboards, but also achieves a dual upgrade in safety and performance, with multi-dimensional cost reduction in materials and processes, providing a more reliable and efficient energy solution for short-distance travel. The launch has attracted significant attention throughout the industry.

Material and Process Innovations: Achieving "Needle-Puncture Resistance" for All-Round Safety

With deep market insights, BAK has consistently grasped the core needs of end-users—safety and performance. The PRO-M high-safety battery passes the industry’s most stringent needle-puncture test: Experimental results show no smoke, thermal runaway, or other issues during the test. The PRO-M battery fully meets the safety performance requirements of GB43854-2024 and GB40559-2024.

To ensure stable energy release under extreme conditions, the PRO-M high-safety battery utilizes high-temperature-resistant composite cathode materials with stable structures at high temperatures; composite coatings are added to enhance the heat resistance of the separator; a highly stable electrolyte is used to effectively suppress side reactions at the interface, thus improving battery safety and durability. Additionally, improvements in slurry preparation, coating, and other processes have led to high-quality electrode sheets, enhancing battery consistency. This results in high-current charge and discharge, long cycle life, and high safety performance.

Comprehensive Performance Enhancement with Over 1,000 Cycles of Lifetime

The electric bicycle market is evolving towards higher-end, personalized, and smart products, with increasing consumer demand for high-end products and high-performance batteries. The BAK PRO-M high-safety battery incorporates composite conductive agents, high-conductivity new foil materials, temperature-adaptive electrolytes, and high-voltage composite cathode materials, along with specially designed electrode sheets. This reduces impedance by 33% and boosts discharge capability to 5C.

The PRO-M 18650 high-safety battery has a capacity of 2.0Ah, an energy density of 170Wh/Kg, and supports 5C continuous discharge. The same-series 21700 battery has a capacity of 3.0Ah, an energy density of 180Wh/Kg, and supports 4C continuous discharge. Moreover, both batteries feature excellent performance in wide temperature ranges and long cycle life, with stable discharge in the range of -30℃ to 70℃ and a cycle life of over 1,000 times.

The BAK PRO-M high-safety battery offers a comprehensive upgrade in high safety, wide temperature range, long endurance, and powerful performance. Looking ahead, BAK will continue to empower the cylindrical battery matrix with its innovative spirit, exploring a wider array of safety application scenarios. From transportation to emergency security and specialized equipment, the BAK PRO-M high-safety battery will provide solid support and protection for a wide range of terminal applications. This will help industries achieve efficient operations, minimize risks, and accelerate the realization of a safer, more efficient, and sustainable future.