Evaluate your computer’s requirements. This is the major factor which you must bear in mind before purchasing an external hard drive. For instance, if you need to store some songs and movies, then a typical 160 GB hard drive will be sufficient to fulfill your requirements. And in case you are planning to acquire more storage capacity; then remember you need to pay additional bucks for it.

Go for brand: While purchasing external hard drives it would be beneficial to look for branded options. Now, the question emerges why it is so? Well, basically there are two reasons behind this statement. First of all, every branded external hard drive comes with a considerable warranty period. It means you are not required to worry about its functionality for a certain period of time. Another reason that makes branded hard drives quite popular is their durability. All of these drives work efficiently for a good duration of time. Although such a branded external hard drive will cost you a few additional dollars, but it covers all the risk factors for you.

Do research: Whichever external hard drive you have decided to purchase, make sure to do some research before going for it. In this concern, the major search engines could be a handy tool. Just type the brand name and model number of the hard drive into the search boxes of these search engines, and then you are ready to discover all about it. Look for the reviews of other customers and specially try to find out whether there is a feedback regarding the efficiency of that drive.

Ensure connectivity: Once you are satisfied with the reviews of the external hard drive, it’s time to check its connectivity. Presently, all the external drives available in the market connect to your computer through either USB or Firewire. Firewire is the fastest option that can dramatically increase the writing speed of a drive. But, most of the computers do no support it. Therefore, make sure which type of connectivity is supported by your computer. If it is Firewire, then nothing is going to be more precise than it. But, in case it is USB, then you have no option but to go for the USB enabled drive.

Speed: After ensuring the connectivity, you should check the speed of external hard drive. Here it is also worthwhile to note that the faster your drive’s speed, the faster the data will be transferred onto it from computer and vice versa. There are several factors on which an external drive’s performance speed relies.

Seek time: Ensure that it is not more than 10 milliseconds if you really desire to have a high speed external hard drive.

Buffer Size: The bigger the buffer size, the higher is the speed of your hard drive.

Revolutions per minute: It must be at least 5400 rpm. However, the most preferable option is to purchase an external hard drive whose speed is 7200 rpm.

Keeping all these factors in mind, you can easily choose the external hard drive which is best in terms of both price and quality.

Even though laptops usually run on batteries when near a suitable power source isn’t avilable, they can also be run using adapters, which simultaniously charge the battery using power from a 110 Volts A.C. outlet. Over the last decade, as technology improved, the usefulness and popularity of laptops has steadly increased, even as the prices keep coming down. Highly efficient power-saving processors have been developed specifically for mobile applications. Moreover, lightweight powerful laptop batteried have been developed with the advances in battery technology. The heavy car batteries that were being used initially have been replaced with lighter and more efficient battery types such as Nickel Metal Hydride (NiMH), Lithium Ion and Lithium Polymer.

Laptops in the early 90s used the same Central Processing Units (CPUs) as used in decktop computers. They also had to use slower processors because the faster processors required more energy. With the introduction of processors specifically designed for laptops, the total power requirements of the laptop were reduced drastically.

The latest laptop models use usually use Lithium Ion batteries, which have replaced the older NiMH batteries. The battery life of laptops with light-duty use is usually between two to five hours. However, if a laptop is used continously, the battery life may drop to around one hour. The chemicals inside the batteries gradually degenerate over time and eventually, the batteries have to be replaced. Depending on the charging and discharging pattern, Lithium ion batteries can last from one to five years.

Laptop battery charger prices range from $200 to $300 and usually have a twelve-month warranty period. Ready access to chargers is important because nickel cadmium may suffer from a ‘memory defect.’ A laptop user may face this problem if the batteries are not fully discharged before recharging. A nickel cadmium battery should be charged only after it has been completely exhausted, otherwise the battery ‘thinks’ that it only has fifty percent of its original capacity and only uses half of its potential, thus increasing the time constraints of the laptop.

A user can recharge batteries for a laptop in two ways. First, whenever the PC is using AC power, a small flow of electricity runs to the battery that is called a trickle charge. This charge will automatically recharge the batteries after the laptop is disconnected. Another method of charging a battery is with an external battery charger. The batteries are fitted into the charger and then the charger is plugged into a standard electricity outlet. Some chargers that are available in the market offer to charge the batteries in seven hours but this may damage the batteries forever. Nickel cadmium batteries are likely to self-discharge, which means they may lose power when they are not being used. Battery chargers solve this problem by providing the battery with a small charge that keeps the battery fully charged.

Nickel cadmium batteries perform more efficiently when they are fully discharged and then recharged. If a battery is used in a more piecemeal fashion then, occasionally fully discharging the battery before recharging it will enhance the productivity of the same. Some battery chargers do this automatically, but leaving the laptop during the night and recharging the battery in the morning can also invigorate the battery efficiently.

If you take Sony laptop battery into pieces, you will see that each component is not manufactured by Sony themselves. Rather while the casing may have a noticeable imprint of Sony, components within it may have different manufacturers with their individual brand names labeled. This under no circumstances means that the battery is in any way of a lower quality than it would be if Sony manufactured it. To the contrary most of the components of computers, laptops and accessories are manufactured by individual organizations which specialize in manufacture of those products. An easy example would be your laptop with Intel Pentium processor. While your laptop may actually be of Compaq or Acer or Dell the processor is manufactured by Intel who specialize in manufacturing of processors.

That being said it may also be sensible to buy a generic laptop battery. By generic I mean those brands that are not as popular. Quite often they have components from the same source as more reputed brands and may offer the same quality. The advantage in buying a generic laptop battery is that they offer a better price than their branded counter parts. Never the less, always go for a reliable manufacturer whether it is branded or non-branded. Your store keeper may be able to give you more information on the feedback of laptop batteries for generic ones.

Now that the brand is out of the way, I recommend buying a laptop battery that offers at least one year warranty. Cheap or expensive I believe this is the way to go. This option provides you a tension free period of a year during which if your battery fail to perform you can get a replacement or as stated in your warranty statement. Although refurbished or used laptops batteries may seem tempting, since they don’t offer any warranty it may be a bit risky investment since you can never predict their performance or longevity.

Another important issue to look into is the type of battery to buy. Laptop batteries are usually of four types: the Ni-Cad, Ni-MH, Li-Ion, and Li-Poly. The Ni-Cad is more of a primitive type of laptop batteries and is not manufactured by any major manufacturers. Although Ni-MH is a newer and advanced battery type it ranks lower than Li-Ion and Li-Poly when it comes to current produced. These two types of laptop batteries, Li-Ion and Li-Poly, are most advanced type and you should try to get them if possible.

Keep in mind to look for power rating of the laptop batteries as well, the volts and amperes. If not compatible to your laptop you should not use them under any circumstances. Remember at all times you can ask the store keeper for clarification about the product you are buying and whether they are compatible to your system. Don’t buy if you are not satisfied with what you hear.

Decrease hard drive activity To minimize the frequency with which your hard disk has to spin up to access data, Salinas recommended defragmenting your hard drive regularly. This optimizes the placement of data on the drive so that it can be found more quickly. You can find the Disk Degfragmenter in the Start/Programs/Accessories/System Tools menu. Beyond that, he advised optimizing Windows’ paging file, which is an area of the hard drive that serves as virtual memory whenever your RAM is full. To change it, go to the Control Panel and click through System/Advanced/Performance Settings/Advanced/Virtual Memory Change and set both the initial and maximum paging file size to 1.5 times the capacity of the installed memory.

Disable startup items Startup items load into memory every time Windows boots up, which causes other open applications to spill over into virtual memory and adds to the CPU load. You can disable the startup options by opening the associated programs and going to the Options or Preferences menu. You can also remove them from the Start/Programs/Startup folder or by clicking Start/Run, entering C:MSCONFIG, and clicking OK. Select the Startup tab and clear the checkbox beside any unnecessary background items, like qttask (QuickTime).

Don’t use any external devices. USB and PC-Cards (aka PC-MCIA) use your battery to function, even when you aren’t using them! Have an EVDO card or maybe a USB mouse? Remove them if you can. Even a memory card reader in your PC-MCIA slot uses power just by being in there. The effect varies based on the type of device, but even a few minutes here and there (as you’ll see) add up significantly.

Power down the display “You can often yield up to ten minutes of battery life per level of brightness lowered,” said Salinas. DeHoop added that lowering the brightness “may give you as much as an extra hour of runtime.” In addition, lowering the screen resolution and color depth decreases the workload on the GPU, thus extending the battery runtime. You can change these by going to Start/Settings/Control Panel/Display and clicking the Settings tab. Disabling extra features like ClearType fonts and fade effects will cut down on the CPU’s power consumption. You can find these in the Control Panel under System/Advanced/Performance Settings/Visual Effects.

Single-task, not multi-task. The more you are doing at the same time with your PC, the more memory and CPU usage increases. Both of which directly use up battery. Close any applications you aren’t using, even the small ones. When doing some experimentation, I found it more efficient to run a single application at a time, then close it and open a new one when ready to move on. While your hard drive uses the battery too, if you are doing anything ‘productive’ you are probably hitting the drive on a regular (even if infrequent) basis anyway.

Turn off unused devices Both of our gurus mentioned disabling unused devices. Many new notebooks provide a hard-wired On/Off switch for the Wi-Fi radio for this reason. Beyond that, you should go to the Control Panel, select System/Hardware/Device Manager, and disable the Ethernet adapter, infrared transceiver, and Bluetooth radio (if your notebook has one). It was designed for mobile devices, but having Bluetooth enabled actually consumes quite a bit of power.

Keep it cool. You can take a page out of the extreme gamer’s handbooks, and have your system perform more optimally by keeping it cool. Make sure your air vents (inflow and outflow) aren’t blocked by anything, which often occurs by poorly positioning your notebook on your lap (which is known to have some other side-effects too, by the way). Heavy CPU and memory use all contribute to heat as well, hence my comment on multi-tasking above

Nickel Cadmium (NiCad) batteries are hardly ever seen anymore. They have dismally low capacities (2000-3000 mAH) and contain heavy metals that harm the environment. Worst of all is the dreaded “memory effect”. When you recharge a NiCad battery before it is completely drained, the longevity of the battery is compromised. That is the memory effect.

Nickel Metal Hybrid (NiMH) batteries have twice the capacity of NiCad batteries (4000-6000 mAH) and are half as susceptible to the memory effect. But these too are becoming rare.

Lithium Ion (Li-Ion) batteries are today’s laptop battery standard. They have all the capacity of a NiMH battery, but zero memory effect and zero toxins. Bonus: Li-Ion batteries weigh half as much as NiMH batteries.

In purchasing a battery, the consumer has three options: used, refurbished, or new.

Used laptop batteries that are not refurbished will probably only last you 30 minutes to an hour before needing recharging.

Refurbished laptop batteries are available from most manufacturers and retailers of refurbished laptops. These batteries are renewed, recharged, and tested. They are much better than plain old used batteries, but not quite as good as new.

New laptop batteries last a good couple of years 600-800 recharges as long as they are properly cared for.

Extending Battery Power

Whenever you are using your laptop near a power source, use the A/C adaptor. However, sometimes you will be forced to use your laptop with no access to a wall outlet, and the battery will run low. Here are three things you can do to extend the remaining power in the battery:

First, if your laptop processor features a power-save mode, switch over to power-save mode. This will slow the laptop by up to 50%, doubling battery life for that time period.

Second, turn off extraneous energy-sucking elements. The major power vampires in your laptop are the hard drive, the CD and DVD drives, any networking devices, and any excessively bright screen settings.

Third, you can double overall battery capacity by installing a second battery. Your laptop must have a universal bay in order to do this. All you have to do is remove the CD-ROM or floppy drive and put a battery in its place.

Company Policy
We have one Goal, to bring exceptional value to your doorstep with no hassle and no confusion. Our products come directly from our manufacturers which allows us to focus on your satisfaction with great pricing and outstanding service. Our products are guaranteed to work within the specifications of each part insuring you complete satisfaction with your purchase. We are diligent in making sure you get exactly what you ordered. We help you all the way through the process. It’s the way business should be done. The Laptop Battery Depot Way!

45 Day Money Back Guarantee
We offer a full 45 day money back guarantee for each battery. The guarantee starts from the day your products ship. The guarantee is no questions asked. You can return the battery for any reason.
Non Defective Returns (45 Day Guarantee)
If a battery has not been installed in your Laptop and the batteries as well as the packaging are intact we will charge a 5% restocking fee or $5 whichever is greater. You will need to return the battery and packaging, and the balance will be credited to your credit card. We only credit for tax and product costs.
Defective Returns (45 Day Guarantee)
If a battery has been installed in your Laptop and the batteries as well as the packaging are intact we will charge a 5% restocking fee or $5 whichever is greater. You will need to return the battery and packaging, and the balance will be credited to your credit card. We only credit for tax and product costs. If the battery has been damaged from shipment or other usage we cannot offer a refund or exchange. Immediately contact the carrier of the damage.

Warranty/Exchanges
All Batteries receive a 2 year warranty and we do offer extended warranties. If you wish to exchange a battery you will need to return the battery, and our customer service team will promptly ship you out a new battery .A Warranty applies to any battery that cannot hold a charge longer than 45 minutes with all power settings on the laptop set to minimum. All batteries will be inspected to verify the battery does not hold a charge. If a battery has lost some of its effectiveness and you wish to exchange it, but it does not fall within the guidelines of an exchange you can exchange the battery and receive a new battery for a nominal fee. Usually we offer a minimum of a 35% discount upon the everyday price. We only exchange 1 battery for the warranty.

Why Us?
• Same Day Ship
If you place your order on any given business day (holidays excluded) before 1:00 pm Pacific Standard Time, we will ship the order the same day using your selected delivery method. We offer various UPS and US Mail shipping options for your convenience.
• No Risk Shopping
We offer anti-fraud protection with online purchases. Our credit card verification and address verification systems are in place to help protect your purchases from theft and fraud.
• Secure Online Ordering
128 secure shopping that encrypts credit cards, etc
• Warranty
We guarantee our products for two full years from the shipping date, so you can buy with quality assurance. We’ll cover your entire order with our Two-Year Warranty.
• Guarantee
Buy with confidence. All batteries come with a 45 day money back guarantee. No Questions Asked.
Benefits

1. We only focus on Laptop batteries and a few Laptop accessories which allows us to be the best in the industry.

2. We manufacture our batteries so we have complete control over our batteries.

3. We manufacture the highest rated mAh batteries on the market.

4. We offer a 45 Day Money Back Guarantee.

5. We offer low shipping charges.

6. We are the only company with the lowest price guarantee.

Laptops are famous for their phenomenal power consuming capacity. This happens because these batteries must be small and lightweight so that they can be easily fitted in the laptop. A typical laptop battery lasts for about ninety minutes. This is a major problem because laptops are supposed to provide service even on the road or when moving. Using heavier and larger sized batteries can solve this problem.

One more factor that affects the performance of a battery is the temperature inside the laptop. A battery loses half of its power when working because of the temperature in the laptop that can reach the 45°C mark. This happens because of the cell oxidation that takes place inside the battery. Cell oxidation is an irreversible process that is detrimental to the lifespan of a laptop battery.

All these problems cannot be solved in an instant. However, some precautionary measures can be taken in order to save time and money. Leaving a laptop in a car that is parked in the sun will result in battery damage and this situation must be avoided. Using the laptop in a cool room will result in increase in the lifespan of the battery. Lithium ion batteries are well suited for those who switch from a fixed power source to a battery on a regular basis. On the other hand, nickel based batteries are useful for those who prefer using the battery as a primary source for the laptop.

The way in which a person uses a laptop battery and the type of battery used, is more important when we realize there are very few alternatives that can really satisfy a laptop user when it comes to battery failures.

In display go for the TFT screen which is LCD an active matrix display. Now in market most of all displays are TFT as dual screen is now outdated concept. If you are a movie buff then widescreen displays are more recommended and are cost wise more and bulky to carry and consume more battery. If you travel more then prefer for laptop less than 5 pounds in weight, if for replacement of desktop then can go for heavier ones that are cost effective. For more battery life, prefer Lithium-ion batteries as precautionary though all come with these batteries. But do not ever go for NiMH batteries, as will have to charge them frequently. If not interested in CD or DVD player then prefer external ones instead of the inbuilt ones to reduce the complications and base weight of the laptop.

If on travel then buy spill resistant keyboard and shock resisting hard drives, that keeps you maintain the data in case of any kinds of accidents. Take care to see that the laptop will have at least two or more USB ports to connect more peripherals like printers, scanner and any other like the pen drive for data transfer. Opt for WiFi or Bluetooth connectivity as it will help you transfer data reliably to many at a single go, these extra features will not cost more. Go for the Widows XP Professional operating system or other which is very convenient supports all softwares and lets you to upgrade them.

Insist for an inbuilt LAN or Modem for better performance and very fast suffices your needs. When you budget the plan wisely for the components needed to your requirements. While going for the HP Laptop computers at cheaper price never compromise with the RAM and the processor. Compaq and HP are the same when it comes to them, the best liked thing of this HP brand is the customer satisfaction with its established network of centers all over the world and very good service. With all the above advices and tips in mind never ever have the laptop after buying without checking thoroughly?

The average battery life for a powerful laptop is about two to four hours. That’s not a lot of time if you want to watch a long HD movie or do some work from outside of your home. There are great external laptop batteries out there that will increase the battery life of your laptop and act just like any other laptop peripheral.

Laptops are generally built with batteries that are embedded into the bottom of their cases. These batteries are often removable and replaceable but they don’t always offer a lot of juice. If you’re looking for a way to increase the battery life of your laptop but you don’t want to spend a ton of money on a new laptop or a new internal battery you should try an external laptop battery.

Long lasting internal laptop batteries can get really bulky and uncomfortable. The largest of them, which will last for about ten hours, will jut out the side or from underneath the laptop and make it unbalanced and difficult to use. Wouldn’t you rather be comfortable? External laptop batteries work in conjunction with your internal batteries. You simply plug your laptop into the external laptop battery like you would an outlet and viola: You now have double the battery life.