Tool/software:
I am using the BQ27441DRZR-G1A device with an INR18650MJ1 3.500mAh, 3.7V Lithium Ion battery. I have got all the I2C access functions working correctly and configure the Design Capacity, Design Energy, Terminate Voltage, and Taper Rate if the Design Capacity id detected to be default. I also configure the Ra_0 tables from default with values I read after charging and discharging the cell fully more than 5 times with the device permanently connected to the battery at all times. I have found that the SOC figure being read back does not reflect the actual SOC state of the battery. The battery continues to deliver charge for many hours after the SOC and remaining mAh report as zero. I'm of the opinion that the Ra_0 tables are wrong. Does TI have some Ra_0 tables and other required parameters to allow me to program the gauge for the battery I'm using.