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Windows 7: Laptop Battery

26 Jul 2010   #11
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by mitchell65 View Post
Ever so slightly off topic but if you remove the battery whilst using the AC then it does increase the airflow to the laptop. Standing said laptop up on a wire cake tray or a couple of struts to give a gap underneath also helps to keep the CP cooler hence more efficient. (BTW eat the cakes before using cake tray!)
If so, that's probably a very poorly designed laptop. I'd agree, to some extent, with older laptops that raising them up helps, but the battery chamber never has any vents inside of it. What good would a vent be if the battery covered it? That means if you were running on battery, the laptop would be hotter, running the fans more, and hurting the overall battery life (time). Leaving the battery in has no effect on airflow, unless it is an extended battery designed to lift the back of the laptop up, such as some of the smaller HP business laptops.

I'm absolutely convinced people are overthinking and over analyzing battery usage, etc. Just simplify your thinking, use common sense, and that's it.


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26 Jul 2010   #12
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by DeaconFrost View Post
Quote   Quote: Originally Posted by mitchell65 View Post
Ever so slightly off topic but if you remove the battery whilst using the AC then it does increase the airflow to the laptop. Standing said laptop up on a wire cake tray or a couple of struts to give a gap underneath also helps to keep the CP cooler hence more efficient. (BTW eat the cakes before using cake tray!)
If so, that's probably a very poorly designed laptop. I'd agree, to some extent, with older laptops that raising them up helps, but the battery chamber never has any vents inside of it. What good would a vent be if the battery covered it? That means if you were running on battery, the laptop would be hotter, running the fans more, and hurting the overall battery life (time). Leaving the battery in has no effect on airflow, unless it is an extended battery designed to lift the back of the laptop up, such as some of the smaller HP business laptops.

I'm absolutely convinced people are overthinking and over analyzing battery usage, etc. Just simplify your thinking, use common sense, and that's it.
I do take your point, DeaconFrost but I have to say that I have been running a small computer help club for "mature" users for a number of years and the most queries I have had regarding laptops have been overheating problems when used for extended periods. In practically every case the removal of the battery and improving airflow underneath the machine has improved the situation. I have found that removing the battery and leaving the battery cover removed has effectively increased the exposed surface area of the underside of the laptop thereby assisting in heat dissipation. It may weel be that I have only been compensating for poor design but I found it has worked on numerous occasions. This seems to me a fairly common sense approach.
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26 Jul 2010   #13
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by mitchell65 View Post
This seems to me a fairly common sense approach.
Check in the slots where the batteries were removed from, and tell me if there are any vents. You won't find them, because the battery is meant to be in the laptop, which would block such vents when needed most. You're resolutions to the over heating were due to lifting up the back of the laptop, letting more air flow underneath. That was a problem with older laptops and any recent poorly designed ones. In fact, if a recent laptop is over-heating at all, it is a sign of another issue, like dust in the fans, hardware error (see HP's problems), etc.

If you take apart a somewhat recent laptop, such as a Dell Latitude D series, you'll be able to see how the air flow was designed. You'll quickly realize why removing a battery does not help with heat issues.

On another note, if the battery is getting too hot, it is soon time to replace it. A sign of a poor quality battery (either a knock off, or a failing one) is that it overheats when trying to charge. It draws more of a charge to compensate for the lack of power passing through. If you complain to any major OEM that your battery is not holding a charge, it is one of the first things they will ask you in the diagnosis. The same goes for cell phone batteries as well.
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26 Jul 2010   #14
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote:
Check in the slots where the batteries were removed from, and tell me if there are any vents.
I am well aware of that fact. You will see that I didn't mention vents in the battery compartment, what I did refer to was increasing the exposed surface area thereby dissipating heat more efficiently.
It really has worked for me on a number of occasions. Perhaps I should add that I am talking about users who buy a laptop in preference to a Desktop just for the smaller footprint with no intention of using a laptop for it's prime purpose, ie. Portability!
Shall we just amicably agree to disagree?
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26 Jul 2010   #15
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

I hope I didn't come across as being not amicable, but I guess we can agree to disagree. What I posted was from my own personal experiences as well. If removing the battery helps a laptop performance cooler and better, that may very well work in a pinch, but you have another issue going on, such as dust, failing fans, failing hard drive, etc. Laptops are designed to run with the battery snapped in. In the cases you've mentioned above, I've often found that shooting compressed air into the vents and fans often helps as well. If the laptop is in a dusty environment, it can suck in a lot of dust that effectively insultates the components inside, keeping them warmer.
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26 Jul 2010   #16
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by DeaconFrost View Post
I've often found that shooting compressed air into the vents and fans often helps as well. If the laptop is in a dusty environment, it can suck in a lot of dust that effectively insultates the components inside, keeping them warmer.
I could not agree more although I have found at times that the vents are so bunged up that blasting from the outside can compact the fluff. Often I have had to remove the keyboard and blow from the inside especially those makes that have the processor in the most difficult to get at place!
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26 Jul 2010   #17
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

Absolutely. I forgot to type that part in. Blowing into the laptop only shuffles the dust around, so it can resettle back in place. It should be blown out of the laptop instead. I've already blown out what I can best describe as a small carpet from a laptop.
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26 Jul 2010   #18
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by DeaconFrost View Post
Absolutely. I forgot to type that part in. Blowing into the laptop only shuffles the dust around, so it can resettle back in place. It should be blown out of the laptop instead. I've already blown out what I can best describe as a small carpet from a laptop.
You should see what a hairy dog can do to a laptop! See here:
Attachment 87609
My System SpecsSystem Spec
26 Jul 2010   #19
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

Quote   Quote: Originally Posted by mitchell65 View Post
Quote   Quote: Originally Posted by DeaconFrost View Post
Absolutely. I forgot to type that part in. Blowing into the laptop only shuffles the dust around, so it can resettle back in place. It should be blown out of the laptop instead. I've already blown out what I can best describe as a small carpet from a laptop.
You should see what a hairy dog can do to a laptop! See here:
Attachment 87609
OT she's a beauty John
My System SpecsSystem Spec
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