Home / Android Tips / Android 8.1 update for 2016 Pixel XL causes a potentially dangerous overcurrent charging bug

Android 8.1 update for 2016 Pixel XL causes a potentially dangerous overcurrent charging bug

Typically talking, updates take away insects, however with regards to Google‘s 2016 Pixel XL, a brand new downside was once presented with the Android eight.1 replace this January. When charging in positive instances, the OG Pixel XL will (dangerously) try to pull as much as 40% extra present than it has negotiated from the charger, time and again getting into and leaving a charging state because the charger shuts off because of overcurrent coverage. So should you’ve spotted your Pixel XL not too long ago flashing “charging abruptly” more than one instances after being plugged into the inventory charger, that is why. 

To start with look, the precise instances required to cause the issue would possibly appear not going, however if you are the use of the inventory charger, they are assured. All that is wanted is a USB-C PD-compliant charger of the proper wattage (just like the inventory charger) and a sufficiently tired battery. When the Pixel XL is plugged in, it’ll negotiate with the charger to drag as much as 18W (9V/2A), however in fact, it’ll try to attract as much as 25W (9V/2.8A).

A detailed-up of this symbol equipped within the Factor Tracker. It may be tough to parse, however see how the blue line for amperage just about hits the ground of the graph (over 2.8A) at 14s.

Fortunately, the inventory charger is sufficiently engineered with overcurrent protections that close off when this happens, interrupting charging sooner than the telephone tries once more. This cycle—beginning to fee, pulling extra energy than asked, and disconnecting because of overcurrent coverage—can occur as much as three or four instances sooner than the telephone starts to attract at a decrease charge. But when a charger does not have that overcurrent coverage or does not adequately meet different facets of the USB-PD specification, this new conduct within the 2016 Pixel XL might be unhealthy to shoppers.

I’ve suffered from this factor myself over the previous few months, and with the addition of charging sounds within the Android P developer previews (during which the issue remains to be provide), it is turn out to be much more noticeable with repeated “dings” at attach/disconnect each and every night time. However now not everybody at Android Police has skilled this conduct with the telephone. Whilst it is conceivable that now not all gadgets are affected, the precise charger configuration required to cause the issue could be one cause of the variation in enjoy.

The originator of the improve thread speculates (with some supporting proof) that the issue stems from inaccurate battery fee controller common sense presented with the Android eight.1 replace.

The worm was once to start with reported to Google‘s Factor Tracker again in January, and nearly two months on it does not appear to have been resolved. Taking into consideration that an overcurrent scenario like this might be unhealthy with a poorly engineered charger, that is not truly OK. We’ve got reached out to Google for remark, and we will replace this tale if we pay attention again. Within the interim, 2016 Pixel XL house owners might wish to make sure that they stick with identified just right chargers with overcurrent coverage, just like the inventory one.

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