SLUA857A December   2017  – September 2022 BQ27426

 

  1.   bq27426 Gauging Design for Applications With 2-S Li-Ion Battery
  2.   Trademarks
  3. 1Introduction
  4. 2Implementation
  5. 3Voltage Calibration and Accuracy
  6. 4bq27426 Configuration and Learning Process
  7. 5Cell Balancing Consideration
  8. 6Revision History

4 bq27426 Configuration and Learning Process

The gas gauge configuration and learning process is identical to that of a single-cell application. Equivalently, the bq27426 is operating from a single cell. Gauge current sensing is not affected by a 2-S battery. The battery internal impedance calculation is still valid. The total capacity of the 2-S is the same as that of a single-cell capacity. If a 1-mV accuracy voltage measurement is maintained, the overall accuracy of the gauge for 2-S battery is the same as for a single cell. The data flash configuration and the learned data flash image from a single cell can be used for the same cell in a 2-S configuration.