They are estimated times based on ones average usage pattern - this has been addressed multiple times so stop bringing up the same crap over and over again. Now, if you've been USING the laptop for x number of hours and the battery life on REAL WORLD usage has gone down from previous experience THEN there is a battery problem relating to power management.
m-2011 i7 256G 11" MBA here, new last Christmas.
Had two different fully-charged values for same conditions prior to update, 2:31 and 2:10 ( both corresponding to ca. 97% and Service Battery status. )
After update, 2:03! (I've not bothered with any of that fresh install or SMC reset b.s.; if Apple doesn't tell me, in this situation, to do X or Y, I'm not going to experiment.)
I was one of the folks who, after complaining in an Apple forum, Apple called-up and loaded diagnostic software on their device, and then called up a 2nd time for more data.
I sent a note and screen-shots, of the current retrograde situation, to my contactat Apple.
Let's hope that 10.8.2 will be the charm.
This IS based on REAL WORLD usage! My battery life was amazing prior to 10.8.1 and is garbage, just like your post , with 10.8.1 running the same environment and processes!
*** Edit ****
Seems like resetting the SMC the third time is a charm!! .... Battery now holding [ and draining ] charge, as expected!! * Knock on cyber-wood * !
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Believe it or not, I reset the SMC thrice and now it's indicating expected duration and, in some instances, holding up better!
So far so good
What are some stats? Under normal browsing or music listening?
m-2011 i7 256G 11" MBA here, new last Christmas.
Had two different fully-charged values for same conditions prior to update, 2:31 and 2:10 ( both corresponding to ca. 97% and Service Battery status. )
After update, 2:03! (I've not bothered with any of that fresh install or SMC reset b.s.
How do I check if the installer is still on my system?
https://twitter.com/wsellers/status/238655598642749440/photo/1/large
I thought this was supposed to be a small update/footprint?!?!?
About 7mb update for my MBA:
+ battery life now way up scoring 9:32 hrs at 98%!
- after restart trouble connecting to Time Capsule Wi-Fi despite full range (!?), was solved by connecting to neighboring network then log in again. Anyone else with same experience?
Well then the "Average Usage Pattern" time for us reporting the problem is significantly less...and thus results in an overall decrease is "REAL WORLD" battery output.
My battery has dropped from 100% to 65% in 30 min. with only Safari open and browsing this forum.
This IS based on REAL WORLD usage! My battery life was amazing prior to 10.8.1 and is garbage, just like your post , with 10.8.1 running the same environment and processes!
Installed the update yesterday. Wake from sleep total system freeze still not fixed. Happens almost every time when I wake up my Mac (mid 2012 MacBook Pro 13"), only hard restart helps.
Overall I'm very happy about Mountain Lion, but these freezes are disappointing and I can't remember things ever being so bad with any of my Windows machines.
I did upgrade from Lion. I guess clean install should be in order...