Dell Batteries

HP F1739A Omnibook XE and XE2 Series Li-Ion Battery
$76.00
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IBM ThinkPad G40/G41 Series Li-Ion Battery
$119.00
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IBM ThinkPad R30/R31/R32 Series Li-Ion Battery
$119.00
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Li-Ion Battery Vaio X/XG Series
$99.00
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Li-Ion Battery for Panasonic CF-48 Toughbook Notebooks
$129.00
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Compaq Armada M700 Li-Ion Battery
$100.00
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Li-Ion Battery for Compaq Evo N600
$94.00
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UD088 Dell Battery for Latitude D620
$108.00
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Dell 8027U Battery Pack
$77.00

Dell Rechargeable Battery Pack
$82.00
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Li-Ion Battery for Toshiba Satellite 2100 Series
$75.00
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Dell D5561 71Whr Battery for Inspiron 700M/710M
$79.00
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Dell Inspiron 1300 Li-ion Battery
$79.00
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312-0383 Battery for Dell Latitude D620
$108.00
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Battery 5400mAh
$90.00
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Throughout the years there have been many technologies involved with notebooks, and laptop batteries are no different. There are actually three distinct notebook battery types on the market today. Knowing the difference between them will help you decide on exactly what to get when the time comes for a purchase.

In this article I will discuss the three different laptop battery types, as well as some of the advantages each one carries.

Nickel Cadmium - NiCd batteries were actually the first rechargeable laptop batteries ever. Manufactures loved them because their cost was relatively low and they had a high output. You won't find Nickel Cadmium batteries being used anymore, due to them being heavier and not as efficient as the newer laptop batteries.

Nickel Metal Hydride - NiMH batteries can still be found all over the place -- particularly for older model laptops. The rechargeable NiMH laptop battery was a big step up for notebook technology mostly in part because they were more reliable than the NiCd batteries, and they had an even higher output. The NiMH battery was also cheaper to produce, and safer to use.

The only issue with NiMH batteries is that they can have a memory effect. Basically, if you don't fully discharge the battery, it can remember this and leave you with a less than perfect battery output.

Lithium Ion - LiON batteries are now used in most new laptops. Unlike the NiMH battery, LiON laptop batteries have no memory effect. LiON batteries are also lighter than both NiCd and NiMH notebook batteries. Both of these advantages equal out to the Lithium Ion battery being the most popular and most expensive among the various notebook power sources.

You are probably wondering which type of battery to get. Getting a Lithium Ion battery would be the best solution, and if you have the money that is what I recommend. If you cannot afford a LiON battery or your notebook is not compatible with one, then getting a NiMH battery is the next best thing.
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The greatest strength of a laptop is its portability and the fact that it can be used without needing any external power connections for hours at a time. This makes a laptop battery one of the most important parts in a laptop. It is very important, hence to take care of a laptop battery. Like every other part of the laptop, the battery also undergoes wear and tear and might need repairs.

It must be remembered that most laptop batteries cannot be repaired if damaged. This is because of their complex construction. And even if it were to be repaired, one would need specific and expensive instruments to do so. It is for this reason that often it is suggested that if a battery is damaged, one should buy a new laptop battery, rather than repairing a damaged one. This is often a better and a cheaper idea.

At times when we see the need for a laptop battery repair, it turns out that all it requires is a bit of calibration. This is done in most battery or laptop repair shops locally. However, there are cases when the battery is actually damaged. It then needs thorough repair, or should simply be replaced, as mentioned above.

One needs to remember that it is not a good idea to use a laptop battery that has begun to leak. Do not even think of repairing such a battery as it could be dangerous. Such laptop batteries can usually not be repaired and even if they are, the repairs are expensive and the battery may not be safe to reuse.

However, there are different types of batteries that are available on the market, and quite a few of them even lend themselves to repair in case of damage. One first needs to know the type of battery one has before one goes in for a laptop battery repair. One can then check it out in some local stores. Often the internet is a good source for finding out information regarding the same and also to know whether the laptop battery can really be repaired in the first place.
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The short answer is: "Whichever type fits your laptop." Laptop batteries vary according to the model and type of laptop computer for which they've been designed. All laptop batteries do, however, share some common characteristics that differentiate them from regular household batteries:

--Laptop batteries are rechargeable
--They are composed of multiple internal cells
--Within each laptop battery is a small printed circuit board
-- Shape and location of terminals differ from model to model.

As is the case with all batteries, laptop batteries create an electrochemical reaction, forcing a stream of electrons from one position to another. Also like other batteries, laptop batteries have positive and negative terminals that receive and send electrons.

Rechargeable batteries are more complex, however, than standard batteries. This is because the electrochemical reaction that provides power must be reversible. Care has to be taken when recharging them to ensure they perform at their best.

Frank McLarnon, Lawrence Berkley lab's staff scientist explains it this way to Scientific American.com:

"When a battery is discharged, an electrochemical oxidation reaction proceeds at the negative electrode, and an electrochemical reduction reaction occurs at the positive electrode. When one attempts to recharge a battery by reversing the direction of electric current flow, the opposite takes place: a reduction reaction proceeds at the negative electrode, and an oxidation reaction takes place at the positive electrode.

In the case of the rechargeable battery, the electrochemical oxidation-reduction reactions are reversible at both electrodes. In the case of the non-rechargeable battery, when one attempts to recharge the battery by reversing the direction of electron current flow, at least one of the electrochemical oxidation-reduction reactions is not reversible. When the battery is charged, the overall reduction reaction that proceeds at the negative electrode may not be the true reverse of the oxidation reaction that proceeded when the battery was discharged.

If the laptop battery process isn't exact, then unwanted build up can take place on either terminal over time, which can cause a dangerous short-circuit."

It is so important to ensure that your laptop battery or notebook battery is the one designed for your particular model and type. Only buy Dell laptop batteries for a Dell laptop computer, Gateway aren't compatible with Compaq laptop batteries and Toshiba laptop batteries won't sit well in a Sony.

It is also wise to remember that old adage: "You get what you pay for." Some companies offer used "cheap laptop batteries" for sale, saying that they have refurbished each battery and restored most of its useful life. The fallacy of this is that, although possible to refurbish a second-hand laptop battery, the cost to do so would be more than the price of a new battery. So, "Buyer beware," and if you must buy discount laptop batteries, buy new discounted batteries.

Laptop computers are a boon to business, large and small. As a wise person is just about to say: "Look after your laptop and it will look after you."