I thought my new MBA 6/13 had a battery issue. Took it in and the genius pointed out some things.
In the Activity menu, the VMware VMX process was using over 100% of the CPU process, he said this would be a big battery drain esp as OS X is still running too.
With VM running on 10.8 I was showing about 3:58 hrs of battery life on a full charge.
He told me to install 10.9 and that would help with battery life.
I did and without Vm running the battery monitor was up to about 14 hrs!
After turning on VM, it fairly quickly adjusts itself and is better than before at over 4 Hrs on a full charge.
Is this normal? I am surprised at such a huge drain on the battery. Luckily when I am running VM i am plugged in.
Using VM Fusion 6, MBA 4 GB RAM, 256GB SSD, OSX 10.9