Laptop with longer battery life

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alivenotdead.com
08/06/2012 05:46
Laptop with longer battery life - Blog -
topbatteries: shenglong yu - My profile
Blog entry
ponentandalsofluctuatesinresponsetoenviron-
*
mental conditions such as temperature and system
workload. The greater the number of components
Laptop with longer battery life
or peripherals attached to your laptop and the more
work you do with it, the quicker the battery will
Friday, Jun 8, 2012 10:55AM / Standard Entry
drain. Every program, driver, or service that loads,
every background task that runs, and every electro-
niccircuitthatfiresupsapsatinybitofbatterylife.
Every laptop owner wants to maximize the time
Consequently,reducingthenumberofattachedor
between battery recharges. Here's how to achieve
active peripherals and minimizing the load placed
that goal with a few basic hardware and software
on the notebook will prolong battery life.
tweaks; as a bonus, they may improve your note-
book's performance, too.
Unfortunately, some of the burdens that the manu-
facturer or vendor places by default on your laptop's
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Longer battery life: Every laptop user wants it, but
battery may not be easy to track down and eliminate.
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few know how to get it without buying a new ma-
As a result, you have to make an effort to minimize
chine. Though laptop manufacturers have made
resource consumption and maximize battery life.
great strides over the past few years in increasing
theefficiency(andthusthebatterylife)oftheir
PCWorldhaspostedsimplerarticlesabouthowto
products,eventhemostefficientmodernmachines
extend your laptop battery life such as HP laptop bat-
don't last long enough for many users. What you
teries, and we won't cover the same items here.
may not realize, however, is that your system is
Keeping your laptop cool, dimming its display, and
probably loaded with integrated peripherals and
enabling system hibernation are all good ways to
bloatware that you'll never use but that consume
prolong battery life; but in this guide we'll be focu-
resources and reduce battery life.
sing on hard numbers that illustrate the potential
benefitsofcertainmodifications.
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In this guide, we'll look at ways to reclaim those
resources and maximize your Acer laptop batteries.
Tweak Your Hardware and Software
Some of the steps may require venturing into the
BIOS or UEFI of your notebook, while others are
You can make a number of hardware and software
simpler software tweaks.
changes to prolong your laptop's battery life. Howe-
ver, some of these tricks might cause your laptop to
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Know What Kills Your Battery
function poorly or even to cease functioning entirely,
so please be careful. Though we tested all of these
Before diving in, review why notebook batteries
tweaks on our own laptop, we can't guarantee that
dieinthefirstplace.FromtheCPUtothetrackpad,
they'll work with your unique hardware; recogni-
every component in a laptop consumes power. The
zingthis,PCWorldcannotbeheldliableforany
.
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amount consumed varies from component to com-
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alivenotdead.com
08/06/2012 05:46
Laptop with longer battery life - Blog - topbatteries: shenglong yu - My profile
deleterious changes that might occur as a result of
To prevent a particular service from starting auto-
following this guide. When in doubt, make a backup.
matically with Windows, double-click the entry for
it in the list maintained in the Services management
On the hardware side, disabling or disconnecting
utility, and change its startup type to `Manual' in the
unused components and peripherals will go a long
associated drop-down menu.
way toward improving battery life. On the software
side,disablingoruninstallingunnecessary(butre-
You probably also have a handful of Windows
source-hungry)servicesandapplicationswillhelp
Services that you can disable to conserve system
minimize power consumption. In addition, upda-
resources. To see which services are launching au-
ting drivers--video drivers in particular--sometimes
tomatically on your laptop, click the Start button,
helpsbyenablingthesystemtooptimizeoroffload
typeSERVICES.MSCintheSearchfield,andpress
certain processes, such as video encoding/decoding,
Enter. The services management utility will open
fromtheCPUtorelativelypower-efficientdedicated
and you'll see a huge list of services installed on
hardware in the graphics processor.
the system.
Windows' built-in System Configurations utility
The vast majority of services listed in the manage-
(MSCONFIG)letsyouquicklypreventunnecessary,
ment utility are vital to the operation of your OS, and
resource hogging programs from launching with
you shouldn't touch them. But if you scrutinize the
the OS.
listcarefully,you'llundoubtedlyfindafewservices
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that you can safely disable. We recommend going
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Since every program or service that loads in Win-
through the list one by one, reading the descrip-
dows consumes system resources, you should di-
tions(performingInternetsearchesforresearchif
sable the ones you don't need or want. Start by
necessary)anddisablingonlytheservicesyou're
launchingtheWindowsSystemConfigurationutility
absolutely sure you don't need. On our project note-
MSCONFIG:ClicktheStartbutton,typeMSCONFIG
book, we found a handful of services that we could
intheSearchfield,andpressEnter.Intheresulting
safelydisable,includingthetabletPCinputservice,
window, click the Startup tab to see all of the pro-
remote desktop-related services, the BitLocker drive
grams that start with Windows. You'll probably see
encryptionservice,andaQualcommGobiDownload
a number of programs that you won't mind disa-
Serviceassociatedwithanintegrated3Gmodemthat
bling.Ourprojectnotebook(anAcerAspire)listed
wehadneverused.Bearinmindthatourspecific
eight items as automatically starting with Windows:
decisions may not apply to your situation; if you
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antivirus software, Steam, QuickTime, three Adobe
use BitLocker or if your laptop is convertible into
Acrobat-related items, Skype, and Trillian.
a tablet, you'll want to keep the related services
enabled.
Having your most frequently used applications start
with Windows can be handy; but if they're not vital,
To disable a service in the manage utility, double-
it's best to disable automatic startup and just start
click it in the list and in the subsequent window that
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them manually when you need them. On our project
opens, and then change the startup type to Manual
system, we disabled everything but the AV software.
in the associated drop-down menu.
TodisableitemsinMSCONFIG,simplyuntickthe
box next to each program, apply the changes, and
If your laptop's system BIOS or UEFI doesn't permit
restart the system.
you to disable unused integrated peripherals, try
.
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alivenotdead.com
08/06/2012 05:46
Laptop with longer battery life - Blog - topbatteries: shenglong yu - My profile
right-clicking them in the Windows Device Manager
Another quick and easy hardware tweak that can
and then disabling them.
save significant energy is lowering your note-
book's screen brightness. We'd suggest reducing
Disabling unused hardware or integrated periphe-
the brightness to the lowest level that is still easy
rals is another great way to conserve resources
to read and comfortable for your eyes.
and maximize battery life. If your notebook comes
with integrated Bluetooth or a cellular modem, for
Putting the Tweaks to the Test
example, or even a wired ethernet port that you ne-
ver use, disabling the hardware will reduce power
To gauge the improvement in battery life that our
consumption and prevent their drivers from loading
test laptop achieved as a result of the software and
every time Windows starts.
hardware-relatedmodificationsdescribedinthis
article, we ran Futuremark's PowerMark utility on
You may be able to disable integrated peripherals
ourCorei3-poweredAcerAspiretestlaptopbefore
in your laptop through the system BIOS or UEFI, or
and after making the tweaks. We tested the laptop
through Device Manager. The preferred method
inthreedifferentconfigurations:unmodified,with
is to use the system BIOS, but many laptops don't
maximum screen brightness and all hardware and
provide the necessary options to take this route.
softwareenabled;modifiedwithsoftwaretweaks
To see whether your laptop does, power it off, turn
to disable unnecessary startup items and services,
itbackon,andduringthePOSTsequence(before
butwithnohardwaretweaks;andmodifiedwith
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Windowsbeginstoload)pressthenecessarykeyto
both software tweaks and with unneeded hardware
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entertheBIOSorUEFI(it'susuallyDELorF2).Once
disabledandscreenbrightnessloweredto75per-
you're in the system BIOS, navigate to the Integrated
cent. Here are the results:
Peripheralsmenu(ifit'savailable)andseewhether
the piece of hardware you'd like to disable is listed
Unmodified laptop (100% screen brightness, all
there. If it is, select the item and disable it.
peripherals enabled)Modified laptop (software
tweaksalone)Modifiedlaptop(softwareandhard-
If your system BIOS doesn't provide the mechanisms
waretweaks,75%screenbrightness)
necessary to disable unused hardware, you can di-
sable them instead through the Windows Device
Batterylife3:163:284:19
manager.Note,however,thatdisablinghardware
in Device Manager doesn't power it down; instead,
Times are listed in hours:minutes.
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the operation prevents the hardware's driver from
loading with the OS. Though not an ideal method,
Initsunmodifiedstate,thelaptopdeliveredarespec-
preventing the driver from loading does saves me-
table 3 hours, 16 minutes of battery life, according
mory, as well as preventing the hardware from
to PowerMark. After we performed a few simple
initializing.
software tweaks, the tested battery life rose to 3
hours, 28 minutes. But the biggest gains came af-
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To disable a piece of hardware in Device Manger,
ter we fully tweaked the notebook and disabled
click the Start button, type Device Manager in the
unneeded hardware. With both the software and
Searchfield,andpressEnter.IntheresultingDe-
hardware-related alterations in place, the laptop's
viceManagerwindow,expandthetreetofindthe
battery life improved by more than an hour, to 4
appropriate piece of hardware, right-click it, and
hours, 16 minutes; that's a battery-life increase of
.
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choose Disable from the menu.
better than 32 percent.
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alivenotdead.com
08/06/2012 05:46
Laptop with longer battery life - Blog - topbatteries: shenglong yu - My profile
In addition to maximizing battery life, correctly per-
forming these system tweaks may increase your
laptop's performance. Disabling unnecessary hard-
ware and software also reduces boot times and frees
upCPUresourcesandmemory,allofwhichshould
increase overall system performance and enhance
your computing experience. May your laptop live
long and prosper!
Stats
* http://www.top-batteries.com/
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