Welcome to the Support Communities!
The article below addresses common questions regarding optimizing battery life on your Macbook Air:
My question is why did the update bring my new macbook air's battery down So much. On a full charge right before the security update my mac would tell me that I had 12 hours of battery life. Since I updated to 10.9.2, I am now only getting 5 hours. I as a user should not have to optimize my battery everytime apple updates the OS. Its their job to get it right in the first place. The only reason I have an air is beacuse of the battery life, yet the OS is screwing that up. Come On Apple!!!
Apple doesn’t routinely monitor the discussions.
Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
I have had the same issue! I have contacted Support 4 times now and I have done everything they have asked:
- SMC Reset
- NVRAM and PRAM Reset
- Manual re-install of 10.9.2 combo
- Complete reinstall of OS x Mavericks
None of these have helped with my battery life! Today my battery went from 10% to 0% in ten minutes. My mid 2013 MBA was charged fully charged after the Mavericks reinstall yesterday morning, little over 24 hrs later it is back on charge!
My cycle count is 62 and battery condition is normal.
Support have told me now to make an appointment at a genius bar to have them look at it.
Frustrating that nobody will take responsibility for the update issue and have the engineers investigate it.
We need to get apple to take notice of this, so send feedback as Eric has said! http://www.apple.com/feedback/
I don't know who the "Community Specialists" are, but usually there posts consist of links to Apple's help articles and they aren't usual that helpful. Also, Apple can't control all the thirdy party softwar eyou have installed. 10.9.2 may have changed something that a third party software was using and now it's causing your battery drain.
You can start the diagnosis with an SMC reset and PRAM reset. If you don't experience an improvement with that, you should open Activity Monitor from the Applications>Utilities folder. Make sure All Processes are showing instead of My Processes, then select the CPU tab and see if anything is using a lot of CPU.
I have done everything suggested, after the update spotlight was running constantly (indexing my hard drive) when the computer is asleep the battery drains faster than it used to. It randomly crashes. Seems more like a problem with apple than third party software. Case in point, my friend also has a new MacBook Air, he and I have noticed the same issue with battery life, we have also experienced the computer rebooting when we unplugged headphones from our computer.pretty sure that is an apple issue if multiple people with different machines are experiencing the same drop in battery life, random crashes and other issues.