We have a new pcb using bq20z40. I setup and calibrated several of our boards and ran a charge and discharge cycle with the lifetime data enabled. I get an erroneous Max Cell Temperature of 127 deg C recorded. If I reset the Lifetime data and setup data logging while monitoring temperature of all thermistors and Max Cell Temperature. Temperatures all read normal (less the 35deg C), but I still get a Lifetime Max Cell Temperature recorded as 127dec C. There are no over temperature flags set.
Any idea what can cause this?