About the BQ27421 gauge, the remaining capacity of battery is read from the StateOfCharge( ).
In the technical reference manual, Chapter 4.13 StateOfCharge( ): 0x1C and 0x1D, it describes the function.
1) About the charging voltage and charging current to the battery, we can measure the voltage/current on the pins to verify the values read by gauge.
2) About the remaining capacity of battery, can you tell us how to verify the StateOfCharge( ) values read by gauge?
2-1) For examples: measurements on pins of gauge or etc.
Thank you.