Hi there, I'm having this patient on my desk with battery not being detected at all - no charging, laptop only works plugged in to the mains. Replaced battery with a 100% working good one, replaced battery signal flex, checked all corresponding voltages and signals and they look fine (I've got PPBUS_G3H = 12.6V, both I2C_PWR_SDA and I2C_PWR_SCL at 1.8V with nice oscillograms at full amplitude, both R5220 and R5221 OK, PP1V8_SLPS2R OK, both SMBUS_3V3_BATT_SDA and SMBUS_3V3_BATT_SCL correct with an oscillograms, SYS_DETECT_L = 0V, SYS_DETECT = 3.3V). I2C signals from battery go to PMU, SoC and charger chip but I haven't yet replaced any of them. Which one first should I pay the attention to? Or maybe there is something else I missed? Please advise.