How to drain the battery is considered as normal?

I bought a MBP 15 "(MacBook Pro with the Retina display, OS X Yosemite (10.10.5), Core i7 2.5 GHz, 16 GB of DDR3 memory) in January 2016." Although this particular model has 9 hours of wireless web browsing, I find his behaviour pretty weird lately.

Right after the purchase of this piece which I could flaunt, I tried to measure his performance of the battery because it is one of their main selling point. As a test, I have that YouTube and the video stream with audio turned on at full volume in Safari (as he called to be optimized on Chrome/Firefox) for continuous 1 hour. To my delight, I found that 10%-11% of the battery charge has dropped. Twice I've tested, the result was invariably the same. Yesterday I repeated once more the same 'experience '. The battery got decreased by 13%-14% in two innings.

Now-a-days, if I keep open Safari, do certain amount of browsing the web, use Google docs/sheets, Facebook, streaming video (no Flash, games, etc.), the battery drops about 20% in an hour. Point to note that I have installed a lot of software to exercise fully the potential of the machine, but only a handful of those, for example, Dropbox, Little Snitch run as a background service consuming little cycles CPU.

As you can see, the battery drain went from 10% to 11% to 20% with a bit more of its use. This essentially translates to 5 hours of computing with a fully charged battery.

If I followed the amperage, the full capacity of the battery (9 full cycles up to now) is approximately 8600 ~ mAh. Theoretically, to offer 9 hours of battery life, the amperage must be about 955 mAh, while, with the above mentioned usage profile, he gushed to-(1400-1500) mAh for no reason.

I apologize for writing a long post. In the end, my question is if this drainage is normal? Earlier, I used a 13 "MBP (no graphics card) for a month, the battery life is impressive (about 7-8 hours at full load). That's what I expect from my new MBP that is twice as expensive. I'm sorry if I look like whining, but you understand very well how he feels a (so-called), a device does not promise and you've already spent your hard earned money.

Battery run time as announced by Apple is measured with the help of non-intensive resource settings that simply do not represent its actual use.  I have never achieved the results announced and that I never thought I could.  I just use the MBP for my needs, is not to see if I can reproduce the hype of Apple.

According to what you wrote, it seems that your results are normal for what you do.  I don't see that you have a problem.

Ciao.

Addendum: Mycroft what?

Tags: Notebooks

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