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BQ40Z60: The SMBus communication stops

Part Number: BQ40Z60
Other Parts Discussed in Thread: BQSTUDIO


I've ran into a strange issue, the communication on the SMBus stops.


The battery is part of a system when plugged into mains, the PSU charges the battery and power the system. When unplugged, the battery takes over. Now mains was plugged in, battery was charging to full and after a while there was no communication with the battery anymore. Using BqStudio showed no battery attached. Unplugging mains, the battery delivered power to the system but still no communication.

I had to unplug the battery and plug back in to start communication again. I've discharged the battery a bit and plugged in mains with BqStudio logging. Same situation occured, battery fully carged, and after a while no communication anymore. The LOG file shows a sudden stop of loggin data. I can't figure out what has caused the communication to stop.ncr_p200_5.log