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BQ27Z846-FW

BQ27Z846 device firmware

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Latest version
Version: 0.06-BUILD10
Release date: May 15, 2026
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bq27z846FirmwareBundle-0.06-windows-installer.exe.zip  — 4620 K

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Products
Battery fuel gauges
BQ27Z846 — Pack-Side Single Cell Fuel Gauge with Integrated Protector and Dynamic Z-Track

Release Information

BQ27Z846-FW is a firmware-only release that can be flashed onto any existing BQ27Z846 hardware. The firmware incorporates the patented Dynamic Z Track™ technology to create a pack-based solution that provides a rich array of features for gas gauging, protection, and authentication for 1-series cell Li-ion and Li-polymer battery packs


Using its integrated high-performance analog peripherals, the BQ27Z846-FW firmware measures and maintains an accurate record of available capacity, voltage, current, temperature, and other critical parameters in Li-ion batteries and reports this information to the system host controller over an I2C compatible interface. SHA-1, SHA-256, and ECC authentication, with secure memory for authentication keys, enables identification of genuine battery packs.

What's new

  • See packaged Release Notes for more information on this firmware release.