I am using the BQ34Z100-G1 to measure the battery level of a AA Portable Power LiFePO4 Battery Pack (77WH-6000mAh-12.8V nominal 4S4P configuration). The battery is charged upto 14.5V with a TI BQ24620RVAT chip.
I am using a EV2400 on the TWI bus of the BQ34Z100-G1 to send the parameters via BQstudio 1.3.45.
I have configured the various parameters like design capacity, number of series cells, pack configuration registers as shown in the SREC files attached.
When I try to calibrate, the board calibration( CCoffset and Board offset) works. I measured the current with an Ammeter as 1339mA, so I entered that. But the current in the meter now appears as -1339mA. (The polarity is wrong)
The voltage calibration does not take in the correct value (Either 14500mV or 3625mV).("Beyond the allowed range") Currently it shows a voltage of 196mV when the actual voltage on the battery is 14.3V. (Sense resistor is 10mOhms and Rseries is 240k). The highest votlage I have been able to enter is around 250mV.
The schematic is below.
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