Not for sure. Info you get from bq_27200 module is read-only data, independent from bme (battery monitor entity), which MAY or MAY NOT think the same - unfortunately, AFAIK we can't check this, thank to Nokia closed source bme (curse them 1000 times for that, for MANY reasons). So, ID PIN is definitely probed correctly. Ho ever, at least bq_module think, that battery capacity at full charge is still 0 - this may be symptom of problem, but may also mean that bq module haven't had a chance to perform internal calibration of values (which shouldn't cause the problem on itself). [...] I think You could try 2 things, independent from each other: [...] Doing that, we at least check it all bq_27200 reports can be correct - this way, it's most unlikely that bq_27200 chip is damaged. Still, nothing sure for 100%, but at least we can filter out one possible symptom.