Does turning bluetooth off give you a lot more battery life?
for the macbook air 13" 2011 version.
Thanks
WiFi is going to be a much larger consumer of battery power. My machine has Bluetooth on constantly (and only about 40% of the time with a peripheral attached). I still routinely get 5+ hours of normal use off a full charge. It's been a while since I ran usability tests but back in '08 I remember doing usability tests (wired v. wireless, etc.) and the difference with Bluetooth was a difference of about 10-15 minutes over 5+ hours of usage.
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If you are, then use this article:
http://support.apple.com/kb/HT4718
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