With Six Months To Go before The New National Standard for Power Banks Takes Effect, Bik Battery's 21700 Cylindrical Cells Have Become The First To Obtain 3C Certification.

On April 1, 2027, GB 47372-2026 "Safety Technical Specifications for Portable Power Banks" will be officially implemented, marking a stricter standard for the safety of portable power banks. As the "heart" of portable power banks, the battery cells are facing more stringent safety entry requirements. Relevant enterprises are accelerating the pace of product upgrades and certifications.

There are still six months until the new national standard is officially implemented. Bik Battery's 21700-45M has taken the lead, obtaining the 3C certification for the new national standard for portable power banks, providing more preparation time for the mobile power bank terminal products to meet the new regulations. The reason for this early certification is Bik's 21700-45M's systematic design for battery cell safety, as well as Bik Battery's leading position in the cylindrical battery field and its accumulated R&D and manufacturing strength over the past 20 years of continuous deepening.

01

The new national standard strengthens safety requirements

The upgrade of mobile power banks starts from the "core"

As the "energy companion" for daily charging and travel, mobile power banks carry the public's dual expectations for convenience and safety, which also puts higher requirements on the reliability of the internal battery cells. In recent years, safety incidents related to mobile power banks have frequently attracted attention, and the safety risks of the products have come to the center of public attention. The "Safety Technical Specification for Mobile Power Banks" (GB47372-2026) was thus born to further strengthen the control of internal risks and long-term usage safety of battery cells, providing a more systematic regulatory basis for the industry's safety upgrade.

The safety answer of battery cells must be delivered not only in rigorous tests but also in long-term use. Faced with these two tests, the new national standard further strengthens the test requirements for overcharging, compression, and thermal abuse, and adds a 4-millimeter puncture test, placing the safety protection under more rigorous inspection under abnormal conditions. As the charging and discharging times increase, the internal structure of the battery cells may also change. The newly added cycle aging lithium precipitation detection focuses on the internal risks that may accumulate after repeated charging and discharging of the battery cells, thereby extending the safety verification to the long-term usage process.

To withstand these tests, the stability of materials, the protective ability of the structure, and the consistency of manufacturing must all work together. BAK 21700-45M was the first to obtain certification, which is precisely to implement the safety capabilities throughout materials, design, and manufacturing as product achievements, providing battery cells verified by the new national standard as support for the upgrade of mobile power banks, and helping manufacturers smoothly complete the product transition under the new regulations.

02

The Bik 21700-45M has been the first to obtain certification

The high-security cylindrical battery showcases its "hard power"

This first submitted certification report is backed by the safety design deeply embedded in the cell of Bik 21700-45M. As the first 21700 ternary cylindrical cell to pass the new national standard 3C certification for mobile power supplies, Bik 21700-45M takes safety as the core of product design. Through the synergy of materials and structure, it builds multiple protections to ensure safety withstands tests.

The key to this design lies in "material activation + physical braking". Bik 21700-45M adopts a mixed material system of high-nickel and manganese iron phosphate lithium, reducing the risk of thermal runaway from the source; through special electrolyte additives combined with special coating separators, risk prevention is implemented within the cell, responding to the strict requirements of the new national standard for the inherent safety of batteries.

While building multiple safety protections, Bik 21700-45M also retains capacity and output advantages. A specific energy density greater than 250Wh/kg provides support for mobile power supplies to achieve a balance between capacity and portability; the maximum support for a 3C discharge rate combined with a wide temperature range of -20℃ to 70℃ enables the product to adapt to more power requirements and temperature conditions. Based on balanced performance, this cell can be flexibly adapted to various application scenarios such as mobile power supplies, electric two-wheelers, and skateboards, firmly establishing a safety foundation. In September this year, Bik 21700-45M also passed the inspection of GB 43854-2024 "Safety Technical Specifications for Lithium-ion Batteries for Electric Bicycles".

03

Turn safety into a long-term advantage

Bike battery's cylindrical cells have been deeply cultivated and supported, and have been the first to obtain certification.

Bike's safety investment has been integrated throughout the research and iteration of cylindrical products. Over the past twenty years, Bike has continuously improved capacity, output, and quality, and has always regarded safety as an important direction for the continuous advancement of batteries.

To lay a solid foundation for cell safety, Bike Battery has built a "true safety" technology system around materials, structure, mechanical simulation, electrothermal coupling simulation, thermal runaway mechanism analysis, and solid-state batteries. Through continuous research and verification, it provides a basis for material selection, structure optimization, and protection design, making the upgrade of safety an intrinsic driving force for the continuous advancement of cylindrical cell products.

By preparing the cells in advance, the terminal products can start earlier. Bike 21700-45M completed new national standard certification approximately half a year earlier, providing a cell solution verified by the new national standard for mobile power supply manufacturers, supporting the early promotion of new product research and overall product certification, and helping terminal products that meet new requirements to enter the market earlier, converting the leading certification at the cell end into the market launch advantage of terminal products.