Battery drain on my Sony Vaio F series laptop?

Ok so I just bought my sony vaio F series laptop a week ago. I noticed that the battery is not up to par and I think it may be defective. Several times I charge the laptop to full and turn it off. When I turn it back on moments later, it shows the battery at 75-80% and it always does this. I call up customer service (only to find out that they are a bunch of retards because they always refer to their "manual") and they say that this is normal. Which I think is total bs, because they specifically state 3-4 hours of battery life. Im losing 20% thats ALOT. Does anyone else have this same problem with their F series laptop, because I seriously think sony is lying. Also, and suggestions as to what I should do?

 

What is your total battery life? This is important than looking at a mere 20% drain and predicting the life.

 

Wait Im sorry what do you mean what is my total battery life? When its drained, it sits around 83~85%. Please help me, I've looked through forums but IM still confused about to how fix this battery drainage.

 

It seems that many random Sony laptop across the series has battery drain issue. I have E-series Sony and it doesn't have battery drain issue, but some others with E-series are having battery drain issue.
From other thread, you also mentioned webcam issue, which I don't have an answer why. My "budget" E-series webcam has no green dots you described so I imagine F-series, which is from premium model, shouldn't have those as well. I would suggest reinstalling/restore the windows and all the software, if the problem persist, then maybe you should claim the warranty

 

Your battery sounds like my two and a half year old FZ battery.

 

I don't think it's battery drain so much as it is the computer being a monster when it starts up.

Try this, first charge your laptop to 100%, shut down, unplug.. plug in a few seconds later, make sure the charging light doesn't come on. Now unplug it, and leave it sit a few hours.

Later, plug it in agian. Does the charging light come on after a few seconds? If it does, you have battery issues.

If it doesn't, go ahead and start up windows while plugged in and see what happens.

Now, it'll probably still be at 100% or very close.

Try unplugging it and restarting then, I bet you'll end up with 89% at best.

 

ok well based off the forums, I saw people posting that you need to do a clean install to fix the battery drainage? Which I am very confused about how to do and what it does. Also, if you guys want, I can send you a picture I took through my webcam, it is just not good quality compared to other sony vaios

 

Press your S1 shortcut key. See if the battery optimization is set to 80%. It explains about it too. Maybe that is the problem or not.

I find it less than three hours of battery sustainability to, not the 3-4.