How many have not upgraded to the 2011 MBA or Lion due to reports of worse battery?

[Jobsian]

Certainly my main reason, even though they're mainly anecdotes, but also some of the early benchmarks also showed this IIRC.

 

[calvol]

Instead of upgrading, I kept the 2010 Air for it's long battery life and cool operating temps. As seen in the attached screen shot, at the moment it still has 18:43 hours of battery life left!

 

[TheJing]

Instead of upgrading, I kept the 2010 Air for it's long battery life and cool operating temps. As seen in the attached screen shot, it has 18+ hours of battery life left.

Yea, and mine has 2 years left. I'm never going to charge this baby!

 

[DarwinOSX]

Its not a significant difference in battery life for most people.

 

[IJBrekke]

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)

Upgraded to Lion, then downgraded again after two weeks because of battery life, heat, and program compatibility.

 

[miggitymac]

I have a 2010 13" MBA...didn't think it was necessary to upgrade to the 2011 version.

I'm on Lion and haven't noticed a drop in battery life or any heat issues. I'm a student so I'm mostly just using Pages and/or Word and browsing the web. I still get more than 8 hours of battery, which is all I really need for my daily use. As long as I don't need to bring the power adapter along to class with me, I'm happy.

 

[EdgarZ]

Get Lion! I have an 11' macbook air with 4go of ram (2010model) and it just feels great to play with the new osx. It saves you a lot of time with its better interface and easy access to apps.

 

[MultiFinder17]

I upgraded to Lion first day on my 2009 Air, and while the fan runs a little higher these days (used to idle around 1700, now around 2500) it doesn't actually seem any hotter, and the battery life is about the same.