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BQ25895: VBat and other ADC related readings read 0

Part Number: BQ25895


Basically my issue is related to intergrated ADC converter of BQ25895, I set conversion to 1s continuous. However after some time when battery is around 3.7V ADC readings seem like they never get updated anymore. I verified 0x02 register and ADC Conversion is still on. What could be potential problem? I'm using VBat readings to switch off power supply when battery goes to low therefore I need to have those readings stable all the time.