Possible ML Battery Drain?

It's not necessarily ML, as many ML users have reported the same or better battery life. There are many factors that impact your battery life, beyond the OS. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.

This should answer most, if not all, of your battery/charging questions:

Apple Notebook Battery FAQ​

 

And yet, others who have ML are reporting the same or better battery life. If ML was the culprit, everyone on ML would be experiencing the same thing. Some have reported that doing a clean install fixed the issue. That wouldn't be the case if ML was the source of the problem.

 

yes, please STOP.

A lot of users have reported this, clean install or upgrade.

Go to the apple discussions forums under Macbook pro, Apple employees started calling afected users to colect data about this problem.

 

I've noticed a high overnight drain when my mid 2011 MBA is sleeping. With Lion I would see a drop of 1-2% a night. Now it's frequently 7-8%. I have Power Nap turned off while on battery, so that's not a factor. I didn't change a single app or setting when upgrading from Lion to ML.

 

I did read it. The point is that there are many factors that can contribute to a reduction in battery life, other than ML. If all ML users reported lower battery life, it would make sense that ML is the cause. However, since some have reported the same or better battery life after upgrading or clean installing ML, that proves that ML may or may not be the cause. I'm not saying ML isn't a cause; I'm saying it's not the only possibility. You didn't bother to read what I posted, you just refuted it immediately.