Posts tagged Used

IBM Laptop Computers & Products : About Used IBM 390X Laptop Batteries

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IBM 390X laptops and batteries are no longer manufactured, but used batteries might be found on eBay. Consider buying a new battery, though, as old batteries…
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Used Lithium Ion LapTop Battery Buying Tips

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Used Lithium Ion LapTop Battery Buying Tips

Used Lithium Ion LapTop Battery Buying Tips

This guide will explain the basics of Lithium Ion battery technology and the  battery, criteria that should be considered when purchasing a used battery for your laptop computer. The basic information regarding Nickel Metal Hydride (NiMH) and Lithium Ion (Li-Ion) batteries is the same for all laptop computers. Buying a used laptop battery can be a great bargain or a terrific waste of money. Take a few moments to educate yourself on Lithium Ion batteries and the information that should be in a battery listing before purchasing a used battery.

Lithium Ion batteries have become the preferred power source for most current laptop batteries. Older laptops used NiCad batteries, and more recently laptops have used NiMH batteries. This guide will primarily discuss Li-Ion batteries because they are the predominant  battery technology for current generation laptop computers.

Li-Ion batteries combine the best qualities of alkaline batteries with the best qualities of rechargeable batteries. Li-ion batteries provide constant voltage during discharge and do not suffer from the memory effect that plague Ni-Cd batteries. Li-ion batteries also provide the highest available energy density of any available battery technology (i.e. provides more power per ounce as compared to NiMH or NiCad) Li-Ion batteries also have a low self-discharge rate (about 5% per month) compared to Nickel Metal Hydride (about 30% per month) or Ni-Cd (about 20% per month). A little known characteristic of Li-Ion battery technology is that Li-Ion batteries lose approximately 15% usable dell Inspiron 4000 battery, capacity each year (depends upon storage temperature). Because of their characteristics, Lithium Ion batteries can operate for between 300-500 cycles and last for about 5 years from the manufacture date.

Many Li-Ion batteries have a set of built in LEDs to determine battery charge status. Just push the button and you can readily determine the charge state of the battery. The LEDs DO NOT provide any information regarding the health (or capacity) of the battery. It only indicates the battery’s charge state. If the battery only holds a 360 mAH charge, all the lights will illuminate, but the battery only may only have 10% of it’s original capacity.

An average laptop battery operating time is a tricky number to accurately quantify. Battery operating time is dell Inspiron 4100 battery dependent upon power settings selected by each individual user and the processor speed. A battery that operates for 2 hours on one laptop with maximum energy saving options selected (e.g. dim screen, reduced processor speed, disk spin down, etc.) may only operate for 1 hour on the same laptop with no energy saving features selected.

A simple test that I use for determining battery capacity is to play a DVD. This is the most energy intensive test that you can perform on your laptop. I usually set up this test with all energy saving features disabled (disk spin down = off, full bright display, processor performance = highest, no sleep, etc.) This provides the worst case scenario. Normal operating conditions will usually be better than my test conditions. I would rather have a customer get a battery that was tested to operate for 90 minutes and actually operates for 2 hours (under normal conditions), than for the customer to get a battery that only operates for 1 hour.

Here’s What You Should Consider Before battery Purchasing a Used Battery:

Li-Ion batteries have a 300 to 500 cycle lifetime. Mac OS X Tiger (10.4.3 and on) allows you to monitor the number of cycles on a battery using the System Profiler. I assume there is a similar capability in Windows or some shareware that is readily available. Try to avoid a used battery that has a very high number of cycles on it. A new battery should be able to play a DVD for over 2 and a half hours. A good used battery should be able to play a DVD for at least an hour and a half. A used battery that plays a DVD for about an hour and a half will probably operate for over 2 hours under “normal” operating conditions (this is just an educated guess based upon my experience). Li-Ion batteries tend to lose about 15% capacity each year, depending upon storage conditions. Try to avoid purchasing a battery that is more than 5 years old. Be cautious if you’re considering a battery where the listing doesn’t provide any test data. It’s a simple matter to test the battery dell Latitude CPX battery, and provide operating conditions and run time in the listing. Be cautious when a battery listing makes claims like “holds full charge” or “all 4 lights illuminate” . As I stated above, this means virtually nothing regarding the health of the battery.


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Cell Types Used In The Making Of Cheap Laptop Battery

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Laptop Battery
by macloo

Cell Types Used In The Making Of Cheap Laptop Battery

Check out the Cheap Laptop Battery here. How much do we know about our laptop battery is an indispensable question today since laptops have become one of the most important personal items. Most of the laptop owners overlook the laptop battery label on which information about the components of the battery are given. Taking cognizance of this information not only helps laptop users establish a strong grip on the safe handling tips of the equipment but also gain vast inputs on the durability and efficiency of the kind of battery used.

Laptop batteries are made up of different varieties of chemical compounds and which ones go into the making depends from one brand to another. The basic process behind the generation of power or energy is the same in all the laptops; as a matter of fact the chemical compounds in the batteries react with each other resulting into the conversion of chemical energy into electrical energy. Out of the several types of laptop batteries, the most popularly used ones are—Lithium-ion batteries, Nickel-Cadmium batteries and Nickel-Metal Hydride batteries.

Lithium ion (Li-ion) based batteries are the most widely used in laptops nowadays because it is lighter in weight and more durable than others. Cheap Laptop Battery is free from ‘memory effects’ which means that they do not have to be fully charged in order to have a full charge next time. Batteries made from lithium-ions deliver superior performance in comparison to others. Li-ion batteries are flammable thus naked exposure of these batteries in the open air may pose environmental hazards.

Nickel-Cadmium (NiCad) batteries are economically priced and possess high discharge rate with longer life. Besides this, it is one of the oldest cell types which are generally found in outdated laptop models. The popularity of these batteries suffered a setback on account of ‘memory effect’ therefore special care is required if one has to utilize it with high efficiency.

Nickel-Metal Hydride (NiMH) batteries differ from Nickel-Cadmium ones in some ways. NiMH batteries have 30% more capacity than the latter and also have less toxic substances. Batteries built from these are commonly used in laptops and they are cheaper than Li-ion batteries. This type of battery cell is very prone to memory effect and also Cheap Laptop Battery which means that laptop users must take good care in order to enhance the optimum run life.

Now, it will be fair to judge why the prices of laptops differ as the make and the model improves.  The type of cells used in the making of the laptop battery has thus become a prerequisite in the pricing of the batteries. Cheap Laptop Battery from uncertified dealers can be a cause of alarm for any buyer considering the fact that low quality cell components are capable of breaking the functions of the system. Lithium ion battery is light weight, long lasting and more compact making it the top option for laptop owners. Another important point to remember before one set out to Purchase Order Laptop Battery is that it recommended that buyers look for compatible charger to your laptops to enhance your battery run life. Remember, the next time you order Discount Laptop Battery online simply ensure that you are looking out for quality cell components from authorized dealers and long lasting batteries instead of falling into marketing gimmicks.

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