With China’s new GB 47372—2026 safety standard for power banks arriving on April 1, 2027, the industry is shifting from basic protection to an intelligent era of "total traceability." Meeting these strict new requirements for safety and lifecycle management, Nationz has unveiled the NB401KBQ6C. This powerful fuel gauge IC for 2–4 cell lithium battery packs packs an ARM Cortex-M0 core, precision ADC, hardware protection, encryption, and "black box" data logging into one compact QFN-32 package, giving portable power manufacturers the chip-level intelligence they need to stay compliant.
The NB401KBQ6C is a masterclass in integration. It runs on a 32-bit core (16.776 MHz) with 128KB Flash and 8KB SRAM, handling advanced gauge algorithms and charging protocols (like JEITA) with ease. With dual 16-bit high-precision ADCs, it tracks cell voltage, current, and temperature with surgical accuracy. It also manages high-side N-ch MOS protection and smart balancing to keep multi-cell packs healthy. For communication, it supports SBS V2.0 and high-speed SMBus (400kHz). Security is built in, featuring hardware encryption (SHA/EC-KCDSA) and a black box to log faults, ensuring data integrity and preventing counterfeiting. Plus, it’s ultra-efficient—sipping just 60μA in sleep and 1μA in shutdown—perfect for devices that demand long standby times.
As the deadline for the new Chinese standard nears, the NB401KBQ6C puts Nationz at the forefront of the power bank industry’s compliance upgrade. By drastically cutting external component counts and simplifying PCB design, this chip enables manufacturers to hit high safety and management standards easily. As the market moves toward smarter, safer energy, the NB401KBQ6C is poised to become the industry-standard "brain" for multi-cell portable energy devices.
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