BAK Battery Launches Industry-First Ultra-Safe Lithium Cell Lineup for China’s Imminent Mobile Power Regulatory Overhaul

As China’s portable power bank sector prepares for a sweeping, safety-focused regulatory transformation, BAK Battery has established itself as the first lithium cell manufacturer globally to launch a dedicated portfolio of cells engineered to meet the country’s incoming mandatory national safety standards. The leading battery specialist has rolled out four new cell models — the 126280 (10,000mAh), 1260110 (10,000mAh), 606072 (5,000mAh) and 526578 (5,000mAh) — all of which pass the industry’s most stringent 4mm steel nail penetration test without fire or explosion, and are purpose-built to enable next-generation power banks with enhanced built-in safety features and full supply chain traceability.

Regulatory Context: China’s Landmark Mobile Power Safety Mandate

This milestone launch comes against the backdrop of what is widely acknowledged as the strictest safety framework for portable power banks ever introduced in China. In November 2025, the country’s Ministry of Industry and Information Technology (MIIT) released a draft for public comment of the Technical Specification for Safety of Mobile Power, with the final binding national standard scheduled for formal release in the first quarter of 2026. Alongside this core specification, updated China Compulsory Certification (CCC) rules will come into force in two phases: starting March 1, 2026, all newly CCC-certified mobile power products must feature an updated logo integrated with a unique traceable QR code, and by March 1, 2027, every product sold in the Chinese market must fully comply with the updated marking and safety requirements.

Core Mandate Requirements: Full-Lifecycle Safety & End-to-End Traceability

The incoming regulatory framework places unprecedented emphasis on full-lifecycle battery safety, marking a significant shift from previous end-product-only testing requirements. It introduces and tightens mandatory standards across every stage of the battery value chain: from cathode and anode raw material formulation, in-line production process control, to safety performance validation even after extended cycle aging. For the first time, integrated smart management functions — including real-time cell voltage and temperature monitoring — will be compulsory for all products, alongside mandatory labelling of cell chemistry composition and rated safe service life. The revised CCC mark with integrated QR code is designed to enforce end-to-end supply chain traceability, driving the entire mobile power industry toward greater transparency, standardized quality control, and reduced safety risks.

Multi-Layered Technological Innovations for Unmatched Safety Compliance

BAK Battery has proactively aligned its entire R&D and product roadmap with the incoming regulatory requirements, turning mandatory compliance into a competitive technological differentiator through a holistic, multi-layered approach to battery safety.

At the material formulation level, the company has integrated a proprietary polymer electrolyte with a significantly elevated thermal decomposition temperature, drastically reducing the risk of thermal runaway under extreme conditions. A custom-developed safety coating on the battery separator delivers exceptional puncture resistance, the key technical breakthrough that enables all four new cells to pass the 4mm steel nail penetration test without fire or explosion. Additional material optimizations include refined cathode and electrolyte formulations, plus a separator engineered for minimal thermal shrinkage at extreme high temperatures. The cells also withstand exposure to 1.3 times the rated voltage without ignition, and pass rigorous high-temperature hot box testing, ensuring end-to-end reliability from raw material input to finished cell output.

On the structural design front, BAK uses a robust aluminum-plastic composite film packaging to enhance mechanical stability and impact resistance. An optimized center-tab design improves the cell’s rate capability and reduces temperature rise during high-current discharge, a critical feature for fast-charging power bank applications. On the anode side, the company has integrated an advanced silicon-carbon composite material, which boosts energy density without increasing the cell’s physical volume, enabling slimmer, more compact power bank designs without sacrificing capacity or safety.

Diversified Cell Portfolio Optimized for Broad Portable Power Use Cases

While all four new cell models share a unified foundation of extreme safety and full regulatory compliance, each is optimized for distinct portable power use cases, with targeted performance highlights:

· The 126280 10,000mAh cell leverages high-voltage nickel-manganese-cobalt (NMC) chemistry, achieving an energy density of 640 Wh/L, balancing high capacity with a lightweight, slim form factor ideal for premium portable power solutions.

· The 1260110 10,000mAh cell uses a proprietary NMC-manganese blended cathode, delivering exceptional wide-temperature adaptability, with stable 1C discharge performance across an operating range from -20°C to 60°C, perfect for use in extreme environmental conditions.

· The 606072 and 526578 5,000mAh cells deliver a class-leading energy density of up to 730 Wh/L in a compact footprint, with support for up to 1.5C continuous discharge, specifically designed to meet growing consumer demand for high-speed fast-charging power banks.

Notably, every model in the new lineup passes the 4mm nail penetration test, the gold-standard benchmark for extreme condition safety set by the incoming national standard, validating their genuine safety performance under the most demanding fault scenarios.

Next-Generation Roadmap: Semi-Solid-State Cell Development

Beyond delivering immediate turnkey compliance solutions for the incoming regulatory mandate, BAK Battery is also advancing next-generation battery technology to set new industry benchmarks for safety and performance. The company is currently developing a 506578 5Ah semi-solid-state cell, engineered to deliver industry-leading safety without compromising energy density or discharge performance. The upcoming semi-solid-state cell fully meets all requirements of the new national standard, passing the 4mm nail penetration test, 135°C hot box test, and 1.3x overcharge test, with engineering samples scheduled for official release in March 2026.

Final Outlook

With this groundbreaking new cell lineup, BAK Battery is not only providing power bank manufacturers with a ready-to-implement, fully compliant solution ahead of the regulatory deadline, but also leading the global portable power industry’s evolution toward safer, smarter, and more reliable battery technology. The company has reaffirmed its commitment to ongoing material and structural innovation, and plans to continue collaborating with ecosystem partners across the value chain to drive the mobile power sector toward higher safety standards, greater supply chain transparency, and enhanced user experience in the years ahead.

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