Pixel 4a Battery Performance Program: Difference between revisions

Add findings from Hector Martin's analysis of the Pixel 4a battery update
Fixed End of support date from 2022 to 2023.
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The Google Pixel 4a is an Android smartphone designed, developed and marketed by [[Google]]. It was released on August 20, 2020, and reached its end of support on August 5, 2022.<ref>https://endoflife.date/pixel</ref> On January 6, 2025, Google announced its Pixel 4a Battery Performance Program to users:<blockquote>"Google has determined that certain Pixel 4a phones require a software update to improve the stability of their battery's performance. An automatic update to Android 13 will roll out to all Pixel 4a devices starting January 8, 2025. For some devices ("Impacted Devices"), '''the software update reduces available battery capacity and impacts charging performance.''' [...] users of these Impacted Devices are eligible for an appeasement from Google."''<ref name=":0">https://support.google.com/pixelphone/answer/15701861
The Google Pixel 4a is an Android smartphone designed, developed and marketed by [[Google]]. It was released on August 20, 2020, and reached its end of support on August 5, 2023.<ref>https://endoflife.date/pixel</ref> On January 6, 2025, Google announced its Pixel 4a Battery Performance Program to users:<blockquote>"Google has determined that certain Pixel 4a phones require a software update to improve the stability of their battery's performance. An automatic update to Android 13 will roll out to all Pixel 4a devices starting January 8, 2025. For some devices ("Impacted Devices"), '''the software update reduces available battery capacity and impacts charging performance.''' [...] users of these Impacted Devices are eligible for an appeasement from Google."''<ref name=":0">https://support.google.com/pixelphone/answer/15701861


Mirror, via the Wayback Machine: https://web.archive.org/web/20250107002112/https://support.google.com/pixelphone/answer/15701861
Mirror, via the Wayback Machine: https://web.archive.org/web/20250107002112/https://support.google.com/pixelphone/answer/15701861
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In a Reddit poll posted on the r/Pixel4a subreddit, 170 out 212 respondents stated that their device had been identified as an "Impacted Device" by Google.<ref>https://www.reddit.com/r/Pixel4a/comments/1hvmggd/pixel_4a_battery_update_google_says_some_phones/</ref>
In a Reddit poll posted on the r/Pixel4a subreddit, 170 out 212 respondents stated that their device had been identified as an "Impacted Device" by Google.<ref>https://www.reddit.com/r/Pixel4a/comments/1hvmggd/pixel_4a_battery_update_google_says_some_phones/</ref>


==== Technical evidence of battery changes ====
====Technical evidence of battery changes====
Hector Martin has analyzed the software update of the Pixel 4a. He determined that the battery profiles had changed such that "LSN" batteries (e.g. "Lishen"?) have a significantly lower charge limit.<ref>https://social.treehouse.systems/@marcan/113914172433692339</ref> Presumably this means that battery replacements will only restore battery performance if the battery is replaced with an "ATL" battery ("Amperex Technology Limited").
Hector Martin has analyzed the software update of the Pixel 4a. He determined that the battery profiles had changed such that "LSN" batteries (e.g. "Lishen"?) have a significantly lower charge limit.<ref>https://social.treehouse.systems/@marcan/113914172433692339</ref> Presumably this means that battery replacements will only restore battery performance if the battery is replaced with an "ATL" battery ("Amperex Technology Limited").