A new feature dropped in the December 2024 security update for Android 15.
To help extend the lifespan of your Pixel’s battery, you can limit charging of your phone to 80%. Once I updated to the December 2024 security release my Pixel 8a notified me that this new feature was available but you can also set it up manually.
A similar feature used to automatically limit charging under certain conditions, for example when a Pixel phone was continuously charging for more than a few hours under high temperatures or when continuously charging for more than several days.
This is a new feature however which you can control in settings.

TL:DR – This feature is available on Pixel 6a and later devices. Your Pixel will occasionally charge to 100% to ensure accurate battery capacity readings
Enabling Battery charging optimisation
By turning on the 80% limit featruee you can protect battery health and optmise battery lifespan.
- Open your phone’s Settings app.
- Tap BatteryCharging optimization.
- Turn on Charging optimisation.
- Tap Limit to 80%.
December 2024 security update
This new feature was added in the December 2024 security update.

