| |
| |||||||||||||||
|
Scroll down the 30+ pages on the A-to-Z site menu: To support this site: |
Forewarned is forearmed... | |||||||||||||||
|
Laptop PCs: Choosing, Using, Upgrading, Fixing Problems and Repairing Laptop/Notebook Computers - Page 1 Last
updated on 1 May 2008
| ||||||||||||||||
Computer Shopper 2007 AwardsBest Notebook Manufacturer: Dell Commended Notebook Manufacturers: Lenovo, Samsung, Sony The full reviews of the latest notebook computers can be found on the following page: Laptop/notebook computer reviews - http://www.pcpro.co.uk/shopper/archiveproductsearch/9/Laptops Your rights under the Sale of Goods Act in the UKIt is well worth noting that the Sale of Goods Act in the UK protects the purchase of goods over their expected useful life. This is valuable protection for goods that have an expected useful life that is longer than the standard 12-month warranty. It means that if the product, such as a desktop or laptop computer, has an expected useful life of four years, its owner can get it repaired or replaced if it dies within that period, regardless of any warranties, standard 12-month or extended. All computers should have a useful life of at least four years, so it is a waste of money to buy an extended warranty for a desktop or laptop computer. However, the vendor or manufacturer will probably try every trick in the book to avoid having to repair or replace a computer that is out of its warranty period and which has no extended warranty. That said, if you have the product examined by a reputable third party and then insist on your rights under the Sale of Goods Act, if the product fails within its expected useful life, you will always be entitled to having it repaired or replaced. Sale of goods - "While laws concerning sale of goods date back 100 years, the only phrase you need to memorise is 'The Sale of Goods Act 1979 (as amended)'." - http://www.bbc.co.uk/consumer/guides_to/law_goods.shtml AMD Live!AMD Live! is AMD's branding for computers designed for digital entertainment. It is the equivalent of Intel's Viiv. Intel® Viiv™ technology - "Intel's new platform designed for the enjoyment of digital entertainment—Intel® Viiv™ technology—delivers the multitasking power of a dual-core processor and enables sleek new designs that fit your lifestyle." - http://www.intel.com/products/viiv/index.htm An AMD Live! PC has to meet several hardware and software requirements, including a dual-core AMD processor, such as a Turion 64 X2 for laptop/notebook PCs and an Athlon 64 X2 4200+ for desktop PCs. AMD Live! computers should come with Windows XP Media Center Edition, Windows Vista Home Premium, or Windows Vista Ultimate, which all run the Media Center. A suite of software should also be included that can, for instance, allow the user to share files online. This software pack can be downloaded from http://www.amdlive.com/gb-en/free_downloads.aspx. Windows Vista: Windows Media CenterIn Windows Vista, Windows Media Center is no longer a separate edition. It is integrated within the Windows Vista Home Premium and Windows Vista Ultimate editions. Windows Media Center - http://www.microsoft.com/windows/products/.../mediacenter.mspx How to wipe the data on a desktop or laptop PC before you get rid of itRetire that computer more safely - "If you're ready to replace, sell, or retire your old computer, it's very important to eradicate personal data stored on its hard drive before unplugging it for the last time. You should always remember that even though you manually delete computer files, an identity thief might still be able to recover them, possibly putting you or your family at risk." - http://www.microsoft.com/athome/security/update/donatecomputer.mspx ARTICLES RELEVANT TO LAPTOP/NOTEBOOK PCsAsus Eee PC 900 - "The new Eee PC costs over £300, so can it justify the £100 price leap? We test it for speed, battery life and sheer usability to find out." - http://www.pcpro.co.uk/reviews/188277/asus-eee-pc-900.html Samsung Solid State Drives - "All-Flash drives available in notebooks and consumer electronics" - http://www.samsung.com/global/business/semiconductor/products/flash/ssd/index.htm Asus Eee [laptop] PC Tweak Guide - http://www.notebookreview.com/default.asp?newsID=4062 The stunning laptop that undercuts the Eee PC - "Laptops sporting Intel's new Atom processor have finally broken cover at "day zero" of the Intel Developer Forum in Shanghai, and if the claims over their price are to be believed, Asus' Eee PC is in serious trouble." - http://www.pcpro.co.uk/shopper/news/183279/... Light laptop review [Video review] - "We look at four of the lightest, smallest, thinnest laptops currently available on the market." - http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_7280000/... Simtrix unveils a new mouse design [Video] - "A New Zealand company creates an intelligently-designed lap-top device to save the mouse from extinction. Simtrix's Grant Odgers talks about his new species of cutely designed lap-top mouse that nestles into the tips of your fingers." - http://www.bbc.co.uk/mediaselector/check/player/nol/... Watching TV on your PC [Video] - "Ben Meyer uses a USB tuner stick to watch free hdtv programming on his laptop." - http://www.tomsgames.com/us/site/flash_videos/watching_tv_on_your_pc.html My Thumb is My Passport: Using Biometrics - "You can add a fingerprint reader to any PC, either as a USB peripheral that can cost as little as $30, or a unit built into a keyboard or mouse. Typically these work with Windows and Internet Explorer; some support Firefox as well..." - http://www.tomsguide.com/us/security-biometric-fingerprint,review-1062.html MSI GX600 TurboBook Laptop - "While game performance was far removed from today's top- or even midtier gaming notebooks, the TurboBook delivered some playable scores considering its low price. On our F.E.A.R. test, the system's midrange 512MB nVidia GeForce 8600 GT graphics card turned in 27 frames per second (fps) at 1,024x768, and 20fps at its native resolution of 1,680x1,050—not great, but definitely playable." - http://computershopper.com/reviews/msi-gx600-turbobook-laptop-review Return of the Mac: Are They Any Good For Gaming? - "The idea struck us a couple of months ago to write a piece on the latest Macs (particularly the Macbook Pros) when we noticed that they come equipped with fairly well-rounded gaming equipment and graphics cards that qualify them as “mobile gaming PC’s” up there with Windows PC manufacturers. Read on to see how they compare..." - The conclusion is that the latest Macs are no suitable for gaming. - http://www.tomshardware.co.uk/Guide-Macs-Gaming,review-30289.html Apple announces ultra-thin laptop - "The laptop weighs 1.3 kilograms and costs £1,200. Apple boss Steve Jobs has unveiled the world's thinnest laptop, called the MacBook Air..." Watch the video. - http://news.bbc.co.uk/1/hi/technology/7188849.stm All you need to know about: Laptops and Notebooks - http://www.tomsguide.com/us/theme-Laptops-Notebooks,101.html 10 Tips To Secure Your Laptop - "Whether you're home or on the road, these security steps will help protect you and your computer from wireless scoundrels." - http://www.informationweek.com/news/showArticle.jhtml... Simple tips save power and the environment - http://windowssecrets.com/2007/11/15/03... 10 things we hate about laptops - http://www.computerworld.com/action/article.do?... Carry a flash drive instead of a laptop - http://windowssecrets.com/comp/071011/ How to Tweak Your OS for Better Battery Life - http://www.tomshardware.co.uk/laptops-lithium-ion-batteries,review-25349.html |
Although Windows Vista is available now with the Windows Media Center integrated into Windows Vista Home Premium and Windows Vista Ultimate editions, it is still possible to buy a laptop/notebook Media Center PC running Windows XP Media Center Edition for under £500.
For example, the Acer Aspire 5633WLMi - LX.AU30J.090 cost only £408.48 in Febraury 2007. It has these key specifications:
http://www.acernotebooks.co.uk/Acer_Aspire_5633WLMi_LX.AU30J.090/version.asp
Included are an Intel Core 2 Duo T5500 dual-core processor (1.66GHz (x2), 667MHz FSB, 2MB L2 Cache) and 512MB DDR2-667MHz RAM memory. It should have 1GB of memory to run Windows Vista, so a low-cost memory upgrade to 1GB and a free upgrade to Vista is offered.
Although laptops/notebooks are still being sold with a single-core processors, the models with much faster dual-core processors don't cost much more, so, in order to future-proof your investment as much as possible, a laptop with a Intel Core 2 Duo or AMD Turion TM 64 X2 Dual-Core Mobile Technology processor is the best choice.
You may soon also also be able to buy laptops with an Intel Core 2 Extreme mobile processor, which has four cores instead of two. However, note that four cores won't make a dramatic difference in performance compared to two cores, because, as yet, programs haven't yet been written to take advantage of four cores.Therefore, if a four-core laptop costs a much more than a two-core model, it's probably not worth the extra outlay.
You should also buy one with a hard disk drive with as much data-storage capacity as possible. Have a look at the Dell site where the specifications for the various models in a range of laptops are easy to view all at once. You can find out what the data-capacity specifications measured in gigabytes (GBs) are for the hard drives used in expensive and budget models. Currently (February 2007), a laptop computer with a 120GB hard disk drive is a good buy if the rest of the hardware is just as up-to-date.
If you want to use a PC Card to add a feature to a laptop/notebook computer, such as wireless networking, or a wireless broadband Internet connection, you should make sure that the slot that it provides supports the type of expansion card. For example, the Web 'n' walk data card from T-Mobile that provides a wireless broadband Internet connection is currently (February 2007) only available as a PC Card (PCMCIA card), not as an ExpressCard, which is the latest standard that almost all of the laptop computers sold by Dell have. Very few Dell laptops now provide a PCMCIA card slot. Unfortunately, the specifications provided by laptop manufacturers or vendors often don't say which type of slot is supported. There is more information on this subject on Page 2 of this article.
If you want to connect a laptop computer to a mobile phone, the phone and the laptop must be able to be connected together via either a USB cable or by a Bluetooth wireless connection. Therefore, the phone must support a USB cable connection (all current desktop and laptop computers support USB 2.0), and the laptop and the phone must support Bluetooth.
If you have an erratic power supply, you can protect your laptop computer with a surge protector, or an Uninterruptible Power Supply, (UPS) that provides surge protection and continuous power to the computer in the event of a power failure. You can buy an UPS for less than £50 from reputable computer stores or online that provides power backup and can shut down the computer in your absence. It is best not to buy an UPS that can only provide a power backup. Some UPS provide insurance that covers your losses if your equipment is destroyed by a power surge or failure.
To locate further sources of information on Uninterruptible Power Supplies, try entering a search term such as uninterruptible power supply uk (as is) in the Google search box provided at the top of this page. (Make sure that its Web radio button is enabled). Drop the uk if you live in the USA.
Visit the Using Windows Vista section of this site for more information of the new versions of Windows.
Visit the Media Center PCs page on this site for more information about them and how to build one of your own. Use your browser's Back button to return to this page.
Note well that brand-name and generic (unbranded) components are very easy to obtain for desktop computers. Unfortunately, with the exception of hard disk drives, this is not usually true of laptop/notebook computers, the parts for which are rarely interchangeable, including the RAM modules. For that reason alone, it's advisable to buy a laptop/notebook computer from the major brand-name manufacturers. There are other reasons to follow that policy, such as the availability of device drivers and BIOS updates. You often have to update the video chip's drivers in order to be able to use updated software such as DirectX and OpenGL, and a BIOS update is often required to run a new operating system or to fix bugs in the original BIOS setup program.
The major manufacturers of laptop computers are companies such as IBM, Dell, HP, Acer, Toshiba, Asus, Samsung, Hi-Grade, Fujitsu-Siemens, and Sony.
Paul Mullen, the highly-respected computer guru of the Helpfile at ComputerShopper.co.uk - "I have recently been buying my memory only from Crucial Technology. I would rather pay the extra cost than waste time trying to track down the obscure program faults that bad memory can cause."
Most of the versions of Windows Vista require more RAM memory to run optimally on a computer that doesn't use memory-hungry applications than Windows XP. A video-editing application is an example of memory-intensive software. Only Windows Vista Home Basic has a recommended minimum amount of memory of 512MB, which is the same amount recommended for Windows XP. Windows Vista Home Premium, the most popular version, and Windows Vista Ultimate require a recommended minimum of 1GB (1024MB) of memory, which is twice the amount of memory recommended to run Windows XP.
In a new computer, consider 1GB of memory a minimum, and buy a model with more if you can afford it. A 2GB desktop/laptop PC will have sufficient power for almost anything a typical user will use it for. A dedicated PC gamer, however, should go for a 4GB model.
For more information on computer memory, read the RAM pages of this site.
| UK - Crucial Memory Advisor - UK
|
| USA - Crucial Memory Advisor - USA
|
For example, if your computer has an Asus motherboard, open the menu, scroll down to ASUS, and click GO. If, say, you have a Dell computer, scroll down to DELL, and do likewise. You will be taken to the relevant information on Crucial's website.
If you don't know the make and model of the motherboard installed in your computer, here is a good free utility - Belarc Advisor - that creates an analysis of the hardware and software on a personal computer. Look under FREE DOWNLOAD - http://www.belarc.com/. Another utility that also provides detailed information on the memory itself is CPU-Z.
LAPTOP/NOTEBOOK COMPUTER NEWSLaptops with a new type of solid-state drive are now availableApril 15, 2007. - Laptop/notebook PCs that have a new type of solid-state drive (SSD) are now available in select models from Dell and Alienware. SSD drives are purely electronic devices that use flash memory instead of magnetic platters that are accessed by moving heads. Because they are purely electronic, they are unlikely to be as easily destroyed by dropping the laptop than are mechanical hard drives, the platters of which are made of glass in laptop models. The manufacturer of the new 64GB SSD drives, which use the new SATA II standard, is Samsung. The company claims that the new drives are faster and more energy-efficient than the current SSD drives used in laptops from manufacturers such as Lenovo, Apple, and Toshiba, and are between two and five times faster than conventional mechanical hard drives. According to Samsung the new SSD drives use almost 75% less power than conventional hard drives. However, because flash memory is still more expensive than conventional disk space, laptops containing the new drives are more expensive than laptops with similar specifications containing converntional hard drives. Samsung Solid State Drives - http://www.samsung.com/global/business/semiconductor/products/flash/ssd/index.htm The new version of the Apple OS X operating system now availableOctober 26, 2007. - The latest update of the Apple Mac operating system OS X, called Leopard, is available in shops from today. The company is marketing Leopard as a superior operating system to Windows Vista by highlighting new features it has that are not found in Windows Vista. The new version has a 64-bit architecture that can make use of the latest generation of 64-bit Intel processors used in Apple computers, while also being able to run 32-bit applications. Many of the features that were previously add-ons, such as Apple TV, are now integrated into Leopard, thereby competing directly with the Media Center provided by Windows Vista Home Premium and Vista Ultimate. Apple ready to set Leopard free - http://news.bbc.co.uk/1/hi/technology/7062593.stm In Depth: Apple's Leopard leaps to new heights - http://www.computerworld.com/action/article.do?... Microsoft extends the shelf life of Windows XP by five monthsSeptember 28, 2007. - Microsoft has extended the shelf life of Windows XP due to customer demand. The software company had scheduled itself to stop selling Windows XP on 30 January 2008, but the date on which many sellers of that version of Windows will no longer be able to offer it has now been extended to 30 June 2008. Microsoft says that the change was necessary in order to ease the transition of its customers that require more time to make the switch to Windows Vista. In April 2007, PC manufacturer, Dell, was also forced by customer demand to restart sales of computers with Windows XP pre-installed. Microsoft has also extended the availability of the cut-down version of Windows XP, called Starter Edition, until 30 June 2010, because of increased demand for it to run on low-powered computing devices made for the developing world. $100 laptop PC goes into mass productionJuly 24, 2007. - A laptop PC called the XO, which is designed for use by children in developing countries, has gone into mass production. It uses free open-source software, power-saving technology, 1GB of flash memory instead of a hard disk drive, and can be charged by using a foot pedal, winding it up, or by solar power. AMD provides its low-power processor. It does not have an optical CD/DVD drive. The laptop currently costs $176 (£90), but the eventual intention is to sell them to the governments of developing countries for $100 (£50). The following article provides more information and a video of the chief software engineer discussing the machine. Asus has announced a similar laptop called the EEE PC 701, the basic version of which costs $200 (£100). The machine has a 7" display, runs Linux, has 512MB of memory, a 100Mbit/s Ethernet network port, a 56K modem, an integrated 300K-pixel camera, and will most probably be powered by an Intel Pentium M mobile processor. Asus claims that it has a three-hour battery life. It has 2GB of flash memory instead of a hard disk drive and does not have an optical CD/DVD drive. Asus intends to provide the machine to developing countries and to the market in first-world countries. '$100 laptop' production begins - http://news.bbc.co.uk/1/hi/technology/6908946.stm Under the hood of the $100 laptop - http://news.bbc.co.uk/1/hi/programmes/click_online/6962035.stm Dell launches a colourful new range of Inspiron desktop and laptop PCsJune 27, 2007. - Dell has begun launching its new design-led strategy by marketing a new colourful range of Inspiron desktop and laptop PCs, which includes four desktops and two laptops. The laptops' casing comes in eight different colours, including 'sunshine yellow', 'bubblegum pink', and 'espresso brown'. At the official launch, which was uncharacteristic when compared to previous Dell launches, loud dance music played as attractively dressed models paraded the bright new laptops down a catwalk. The laptops are priced from £549 and include options for both AMD Turion 64 and Intel Core 2 Duo processors. Other options include a choice of hard disks up to 250GB, optional Blu-ray high-definition optical drive, and an integrated 2-megapixel webcam. Dell has also launched what it claims is the world's thinnest 13-inch laptop - the XPS M1330 Ultramobile Notebook, which is priced from £729. Its features include Nvidia GeForce Go 8400M GS graphics, high-definition HDMI support, a slot-loading DVD+/-RW optical drive, and a built-in wireless network indicator that makes it possible not to have to switch the laptop on to find out if it is in range of a wireless network. Hands-on with "world's thinnest" 13in laptop - http://www.pcpro.co.uk/shopper/news/118373/... Apple improves its MacBook Pro range of laptopsJune 5, 2007. - Apple unveils faster MacBook Pro line-up - "Apple has unveiled a complete revamp of its MacBook Pro line-up. The new machines, which replace the existing models, represent an evolution of the range rather than a radical revamp, delivering improved performance and faster networking..." - |
The web has many sites that provide PC optimisation information, or that provide or run optimisation programs from their sites. You can make use of the Google search box (with its Web radio button enabled) provided at the top of this page to locate them. Here is one of the best sites:
PC Pitstop Optimize 1.5 -
"Run our free Optimize scan and identify many common problems that plague most computers. Find out what it takes to get a better performing computer without the expense or difficulty of adding new hardware." -
http://www.pcpitstop.com/store/optimize.asp
The BIOS Setup program of a PC configures its hardware and some of its software for use by the operating system, which is usually a version of Windows or Linux.
The BIOS is accessed and works in a laptop/notebook PC in exactly the same way as it is accessed and works in a desktop PC. However, most laptop PC manufacturers limit the number of possible configuration settings that the user can enable or disable. This is probably done in order to prevent users from enabling settings that conflict and could cause the system to fail to start up. Inexperienced users would then call the manufacturer's free support service for help while the machine is under warranty. The manufacturers are obviously keen on making their laptops as foolproof as possible in order to reduce support costs.
Most laptop manufacturers include a section on the BIOS setup program in the user manual that comes with their laptops. It usually gives a brief explanation of what each setting is for, and/or what happens to the system when a setting is enabled or disabled.
Most laptops start up by showing the manufacturer's logo instead of the RAM memory count and Windows setup screen. If you haven't seen the startup screen, have a look at the examples shown on the first page of the section devoted to the BIOS on this site. If you prefer to see the memory count, most of the BIOS setup programs used for desktop and laptop PCs have a setting that disables the appearance of the manufacture's logo. The user manual will usually tell you how to disable it.
Click here! to go to information on the BIOS on this site.
Good advice is not to buy them from a vendor that has them made in the Far East where they are cobbled together with little or no thought of providing spare parts or updates. How can you tell if a vendor provides spare parts and updates? - It should have a website, such as Dell's, that you can visit and from which updates can be downloaded and spare parts or upgrades can be purchased.
The problem with laptops made by the major manufacturers is that they come pre-loaded with plenty of software, much of which is useless, and are usually configured to offer special deals from the manufacturer's marketing partners, such as offers to sign up with an ISP or photo service, or with a particular antivirus program and service, etc. Moreover, a Windows CD is not usually provided. Various types of recovery systems are used instead that usually make use of one or more large hidden partitions on the hard drive that can only be used for recovering the system. Recovering that space requires knowledge of what has been installed on it and how it can affect the rest of the system if removed. Read this article if you want to know more on this topic: Laptop Setup Secrets.
Notebook computers specifically designed for use by business professionals who are constantly on the move are more expensive than notebook computers designed for the home market. The main reason for this is because the components of a portable computer suffer most from the affects of shock and vibration. Therefore, you are advised to purchase a business-class, ultra-portable machine if it is intended to be used mostly while on the move from place to place, because that class of mobile computer is specifically designed to be protected from the affects of shock and vibrations.
For more information on this topic, read the Q&A on this site called Are vibrations harmful to the components of my computer, such as its hard disk drive? Use your browser's Back button to return to this point on this page.
The prices of notebooks computers can range from as low as £450 to as high as £2,500 or more. If your computing needs can be met by a £450 notebook, you'll be throwing away money if you buy a more expensive product. Likewise, if your computing needs require a £1,500 notebook, you'll probably be causing yourself unnecessary problems if you buy a much cheaper model.
How dangerous can faulty laptop batteries be?You have probably read the seemingly endless stories on this site and others about the recall of faulty, potentially dangerous laptop/notebook batteries. Ever since a Dell notebook battery was shown exploding on TV, there has been non-stop coverage of stories about battery recalls. But, note well, of the over four million batteries involved in Dell's recall, there have only been six reported cases of property being damaged. You should visit the website of your laptop manufacturer to check if its batteries are being recalled. If they are, then the site will provide you with the information you need in order to get a new battery or batteries. Otherwise, you shouldn't worry about your safety and the safety of your property when using your laptop, because in the vast majority of cases no damage has resulted, even when the Lithium Ion (Li-ion) batteries that have potential problems were being used. Just follow the safety rules regarding storage and don't use a battery if it has been damaged or has become ruptured. Windows Vista: Data storage Windows Vista has an improved file system, support for hybrid disk drives (H-HDDs), volume shrinking and volume extending, and drive encryption features. "Microsoft also expects that H-HDDs will extend the lives of batteries and disk drive. Known as Windows ReadyDrive, H-HDDs cache disk reads and writes without needing to spin the disk drive. According to Hiroshi Sakakibara, product manager on the Windows client team, this saves battery power on the machine and can also prevent disk failures when using laptops while on the go. "Windows ReadyDrive makes your laptop more rugged since it is less likely the disk will be spinning and susceptible to damage as one is running from meeting to meeting", say Sakakibara." - Five things you'll love about Vista's storage - http://www.computerworld.com/action/...Basic&articleId=9004513 |
Portability and the life of a battery have to be matched properly against the performance and the features provided by the hardware.
Most new notebook computers use "smart" batteries which contain internal micro-processors. These special circuits communicate valuable charge/discharge information to the notebook computer, which makes it possible to provide useful features such as a battery fuel gauge while also providing extra safety. For instance, the battery can inform the charger when the charing cycle is completed and end it so that the battery can't be overcharged.
If you are using a charger to charge the batteries for a mobile phone, etc., you should use a quality charger that can switch off when the recharging is completed. Low-quality chargers just keep charging the battery or batteries until they're switched off, and this reduces the battery life.
Ni-Cd (Nicad or Nickel Cadmium) batteries, still used in older laptop/notebook computers, have been superseded.
The batteries used in all recent notebook/laptop computers are Li-ion ("Smart" Lithium Ion) and Ni-MH ("Smart" Nickel Metal Hydride) batteries. Ni-MH batteries, which have a shorter battery life per charge, are inferior to Li-ion batteries. Therefore, if you're going to make plenty of use of the battery, make sure that the battery the notebook computer is supplied with, or which you buy, are Li-ion batteries. Most laptops now use Li-ion batteries, but you should check a particular machine's specifications just to make sure.
Ni-MH (NiMH) batteries can be recharged up to 1,000 times if used properly. The lifespan of Li-ion batteries depends on how they are used. However, a user would be lucky to get more than five years use out of one, or somewhere between 300 and 400 recharge cycles.
Lithium Ion battery cells are packed in a higher density than Nickel-based batteries (Ni-Cd, Ni-MH), and since Lithium is the lightest metal, the battery life per charge is longer and the weight of the battery pack is lighter. You can also recharge a Li-ion battery whenever it's convenient, without the full charge/discharge cycle that's necessary to keep nickel-based batteries at peak performance. Over time, crystals build up in nickel-based batteries that prevent them from being charged completely, requiring an inconvenient full discharge and recharge.
If your laptop/notebook computer has a failing Ni-MH battery and you can't find a replacement, you can buy an external laptop battery that is usually about the size of a laptop itself, which plugs into the computer where its power cable connects. To find vendor's and information enter external + laptop + battery (as is) in the Google search box at the top of this page (with its Web radio button enabled). Such batteries usually provide longer battery life than internal laptop batteries.
Note that there are many companies in the US that recondition Ni-MH batteries by replacing the cells with new ones, but I was unable to locate any such company in the UK.
Laptop/notebook batteries: Use, storage, and energy-saving tips1. - Always purchase a laptop battery from a reliable source that comes with a guarantee. 2. - Never allow a laptop computer's battery to be left discharged for more than a couple of months, because it probably won't charge or hold a charge properly thereafter. Always store an Ni-MH battery in a fully charged state. Check it from time to time and charge it fully. Discharge and recharge it every few months. If a notebook computer that has a Ni-MH or a Li-ion battery is only used infrequently, charging and discharging its battery at least once per month is recommended. If you don’t plan on using your notebook computer for more than six months, you should remove and store the Li-ion battery with a 50% charge. Make sure that it is stored in a cool place. Take great care not to overcharge a battery, because overcharging is very destructive of rechargeable batteries. In order not to overcharge a battery it's best to discharge it completely and then allow it to recharge over the correct length of time for a full recharge to take place. The charge times vary between battery chargers. To find out what the charging times are for the different types of battery, read the relevant documentation that came with the notebook computer. Because of the nature of notebook batteries, you should always buy them from a reliable source, because unreliable sources might leave their batteries in a discharged state for longer than a few months. Rechargeable laptop computer batteries self-discharge when left unused, so recharge a stored battery from time to time so that it is never left in a discharged state. Laptop computer batteries are expensive and can deteriorate in storage or when being left unused in the computer. Remember that a battery is more likely to expire through a lack of use than it is to expire through being used properly. Li-ion batteries need to be used frequently for maximum performance. If you don’t use your notebook computer often, make sure that you complete a charge cycle at least once a month. A charge cycle with regard to a Li-ion battery is defined as using and recharging 100% of the battery's capacity. But that doesn't have to mean doing it as one full single charge. For instance, you could use your notebook computer for a few hours one day, using half of its battery power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two. Therefore, you can take several days to complete a charge cycle. Each time a charge cycle is completed, it diminishes the battery's capacity slightly, but you can put notebook batteries through many charge cycles before they will only hold 80% of the original battery capacity. As with other rechargeable batteries, you will eventually need to replace the battery. Ni-MH batteries can be recharged when not fully discharged, but require to undergo a full discharge/charge cycle that's necessary to keep Nickel-based batteries at peak performance. Over time, crystals build up in Nickel-based batteries that prevent them from being charged completely, requiring an inconvenient full discharge and recharge. A new Ni-MH battery must be fully charged before use or it will recall a semi-charged state as being the fully-charged state and thereafter never exceed that semi-charged state when recharged. An Ni-MH and a Li-ion notebook battery needs to be fully charged and discharged a few times before it conditions itself to its full capacity. 3. - When using a laptop computer in battery mode, always turn down the screen's brightness and contrast, and use the power management features offered by Windows under Power Management in the Control Panel. Set the profile to Max Battery to make Windows use the most aggressive power management available to it. Set a screensaver to make the screen go blank after between two and five minutes of not being used, or use a free utility such as Wizmo. The backlight of the screen is one of the biggest users of power, so reduce the brightness or find out what the keyboard shortcut is that lowers the brightness when the computer isn't being used. The computer's user manual should provide such information. You should also open the BIOS setup program to make sure that all of the other power-saving features are enabled, such as Intel's SpeedStep and AMD's Cool & Quiet. Consider installing additional RAM to make the total RAM 512MB if the computer has less than that and it has a free memory slot, because the additional memory reduces the usage of the hard disk drive, which consumes much of the battery power. A typical notebook's hard disk drive uses 10% to 15% of its battery power. But don't install too much RAM because it uses power even if the RAM isn't being used by the system. Note that if the "hibernation" feature is used, it involves writing the entire contents of RAM (even if it's unused) to the hard disk drive and reading it back into the RAM when the system comes out of hibernation. Having plenty of extra RAM installed will slow down hibernation stops and starts, but will increase the size of any back-ups you make if they include the hibernation file (usually called hiberfil.sys in the root directory). Close any unused applications and monitoring utilities showing in the System Tray (Notification Area) in the bottom left-hand corner of the screen. Open the Windows Task Manager by pressing the Ctrl+Alt+Del key combination. In Windows XP, other programs running in the background are listed under the Processes tab. You can find out which programs they belong to by using the Search facility to locate the folders that the named files are in, and, on that basis, decide if you can end the process. The Performance tab shows the CPU Usage, which provides the current level of use of the processor shown as a percentage and a graphic depiction of the use over a period of minutes. Click Options on the window's menu and use the mouse to place a check mark beside Hide When Minimized. When you click to minimise the window it displays an icon in the System Tray. If you hold the pointer of the mouse over it, the processor's use as a percentage is displayed. Read Managing Processes and Tasks in Windows Vista to find out what the differences are between the Task Manager in Windows XP and Windows Vista. Disconnect unused PC Cards or USB devices. Avoid playing DVD video files or graphics-intensive video games. 4. - Don't short circuit the battery's terminals by placing anything that conducts electricity across them. If the battery is short-circuited it will be ruined. Therefore never store a battery with metal parts. As with anything else electrical, a battery must not be exposed to damp conditions, or be allowed to get wet. If you use notebook computer in temperatures higher than its specified operating range, which is usually 95°F (or 35°C), you may permanently damage the battery’s capacity and it won’t provide power for as long on any given charge. You may damage it even more if you charge the device in these temperatures. Moreover, even storing a battery in a hot environment can damage it irreversibly. You may find that using a notebook in a very cold environment decreases the battery life, but, unlike the real and permanent damage that can take place in a hot environment, this is a temporary condition. After the molecules in the battery warm up, the battery will return to its previous capacity. 5. - Li-ion batteries can be adversely affected if the computer is constantly used from the mains supply and not run from the battery. Therefore, most of the brand-name manufacturer's of notebook computers have an automatic power-management mode that uses the battery instead of the mains supply in order to provide the discharge/charge cycle that keeps the battery in good condition. If your notebook provides this feature, make sure that it is enabled. 6. - Many notebook computers now provide a battery recalibration routine in the computer's BIOS setup program. The battery's smart electronics report how much charge the battery is carrying. This can become inaccurate over time, leading to a false report that says that the battery is fully charged when it isn't. The charging therefore stops prematurely, making it look as if the battery's performance is declining. To correct that, the recalibration routine runs the battery's cells flat and completely recharges them so that the smart electronics can function properly again. Click here! to go to information on the power management options of a Gateway laptop that includes recalibration. Tips for Extending Battery Life - http://www.tomshardware.co.uk/tips-for-extending-battery-life-uk,review-1932.html Visit the following page for more information on laptop computer and other batteries. For information on battery technology, visit: BatteryUniversity.com - http://www.batteryuniversity.com/ **** This relevant article appeared in Computer Shopper in January 2006: Improve notebook battery life - http://www.pcpro.co.uk/shopper/.../improve-notebook-battery-life.html **** SpeedswitchXP - Processor (CPU) frequency control for notebooks running Windows XPWhat the different power schemes do in Windows XP is not clear, and it's not possible to adjust the schemes because the important settings are not accessible through the Control Panel. SpeedswitchXP provides access to all of the power scheme settings. It comes in very handy for laptop/notebook users when they want to use the full power of their processor when connected to the mains. - http://www.diefer.de/speedswitchxp/ |
If the battery is not showing the correct charge, if necessary, consult the laptop's user manual to find out how to complete at least one battery charge/discharge cycle. Don't worry if the battery doesn't begin charging immediately, or if a slight clicking noise is produced for a while as the battery charge light blinks on and off. This is caused by the battery having been fully drained, or when the battery has been left in storage for a long period. If left for an hour or so, the charging should begin and the light should stop blinking. If the battery is still not working as it should, then it is probably dead.
The most commonly used Lithium Ion (Li-ion) batteries produce no memory effect, nevertheless the battery will have a longer life if it is properly fully discharged every time. A Lithium Ion battery, or any other rechargeable battery, will only recharge for a certain number of times - between 500 and 1000 - before it dies. So, if the laptop is used on battery power and is plugged into the mains to top the battery up, the recharge times are being used up a lot faster than if complete charge and discharge cycles were being employed. Therefore, unless it is being charged, you should take the battery out out when the laptop is being powered from the mains. Only charge it when it has drained completely if you want to maximise its lifespan.
Most power lines are buried underground, so lightning-induced power surges are more likely to strike through TV antennas and telephone lines, etc. Large electrical motors, such as power tools can generate 'spikes' when they start up. The electrical cables that serve a building often run next to one another through the same conduit boxes. A surge through one circuit can induce surges in neighbouring circuits, so a surge through a power line to which power tools are connected can spread to a power line to which electrical equipment is connected. Therefore, it is the best policy to place surge protectors as close as possible to the equipment that they are protecting, with the shortest possible cable between the equipment and the surge protector. Good surge protectors come with free insurance policies that cover any failure to provide protection, and have an indicator light that shows if they are working properly. Surge protectors are available that protect network, telephone, and TV/cable line. The best brands are Belkin and APC, which also manufacture UPS units.
Click here! to go to information on this site on Uninterruptible Power Supply units (UPS).
LAPTOP/NOTEBOOK PROBLEMS AND SOLUTIONSClick here! to go to the laptop/notebook problems dealt with on this site. |
| |
![]() |
PC Buyer Beware! Copyright © Eric Legge 2004-2008. All rights reserved.