MacBook Air M2's battery is draining fast after Mac OS 15.3.2 update

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What is the Age of this computer and how many Full Battery Cycles has it had ??

Batteries are considered Consumable Products.

Over time it will degrade to a point where it needs to be replaced.

The usage is normal as the capacity will go up and down all the time and never stay always at 100%. Apple

Batteries are rated for 1000 Full Battery Cycles and / or 80% Capacity before needing Evaluation or replacement.

For additional reading on Battery and Apple Computers this link may help. About battery health management in Mac notebooks and especially for the Apple Silicon Computer  If battery charging is paused or on hold on your Mac

https://www.coconut-flavour.com/coconutbattery/

To avoid a session of Q&A, Q&A  and Q&A  

Download the Application Etrecheck ( External Link ) directly from the Developer.

This is a Diagnostic Tool that makes no changes to the computer.

It makes a coherent and readable inventory of both the Hardware and Software used on the computer 

The application is free or paid for added features. 

The Report will Not Reveal Any Personal Information. 

Post back the Full Report - copy and paste - >>>> using the Additional Text Icon  <<<<

Shadow_Dev wrote:

Downgrade to Sonoma. Issue sorted

Downgrade an Apple Silicon computer MacBook Air M2 ?

Not suggested and not officially supported by Apple

The process for Apple Silicon of not like for Intel Computer where you could Wipe the Entire Drive and then commence from scratch

Me too. My battery is half what it was before.

And so . . where do we go from here ?

Downgrade to Sonoma. Issue sorted