Lenovo thinkplus 190W Power Bank Adopts Nationz Technologies Multi-Series Fuel Gauge Chip

As the new mandatory Chinese safety standard (GB 47372—2026) takes effect, the power bank industry is entering a new era of compliance and intelligent management. Recent teardown analysis reveals that the Lenovo thinkplus 190W High-Power Power Bank (Model: PBLN20190B) is equipped with the Nationz Technologies NB401KBQ6C multi-series fuel gauge chip.

Featuring a USB-C retractable cable, USB-C, and USB-A ports, the power bank delivers up to 140W from a single port and a massive 190W total output. Its front-facing color screen provides real-time readouts of remaining battery, port wattage, voltage, temperature, and battery health. To meet strict new regulations requiring robust parameter monitoring and error logging, the fuel gauge chip serves as the central nervous system for state-sensing and safety management in high-power, screen-equipped devices.

The Nationz Technologies NB401KBQ6C is a highly integrated fuel gauge chip engineered for 2-4 series lithium battery packs, packing monitoring, protection, metering, cell balancing, communication, authentication, and data logging onto the silicon. Built around a 32-bit ARM Cortex-M0 core (16.776MHz) with 128KB Flash and 8KB SRAM, it effortlessly runs advanced capacity algorithms and safety protocols.

Dual 16-bit high-precision ADCs provide real-time, synchronous tracking of cell voltage, current, and temperature, with full support for SMBus communication and the SBS V2.0 smart battery standard. Crucially, to satisfy the new standard's mandate for "monitorable, recordable, readable, and traceable" data, the chip features an integrated diagnostic lifespan monitor and a "black box" recorder. This translates low-level, fragmented battery telemetry into actionable, visual data for the main MCU, laying a solid foundation for fault warnings, lifespan analysis, and full-lifecycle quality tracking.

Lenovo's integration of the Nationz Technologies NB401KBQ6C highlights the premium portable power market’s demand for precise battery management and data visualization. Under strict regulatory frameworks and the push for smart hardware, multi-series management chips combining fuel gauging, safety protection, and black-box telemetry are setting a new benchmark for product differentiation. Moving forward, as these highly integrated homegrown chips see widespread commercialization, portable fast-charging and high-power storage devices will evolve toward safer, more transparent, and intelligent lifecycle management.