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RCS Battery Gas Gauge Solution for
Li-Ion Battery Packs

  • Imbedded Residue Capacity Simulation (RCS) Algorithm

  • ARM 32bit Cortex-M0 CPU，

  • High resolution Current/Voltage measurement

  • Supports current sense resistors down to 1mΩ

  • Internal and external temperature sense functions

  • BN Gas Gauge management software

chip model
chip diagram
algorithm bus

The BN21101 RCS gas gauge solution is a highly integrated, accurate 1-series cell gas gauge with a flash programmable custom CPU  (Arm) and SHA-256 authentication for Li-ion battery packs. The  gauge communicates through I2C-compatible  interfaces and includes several key features that can help facilitate accurate gas gauging applications. SOC measurement accuracy can reach +3%.

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