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Batteries Manufactured Of Paper And Coffee-grounds

November 11, 2009 By: shoppingauthor Category: Computers No Comments →

Portable power is everywhere. Nowadays most people use laptops or and notebooks in their everyday life. To my mind everyone will have to purchase a battery for his or her portable device one day. The industry of Laptop Computer Batteries and laptops develops rapidly. It is even difficult to imagine their wide variety. Modern advanced technologies help scientists to discover and examine new alternative means of power supply.

Batteries made of Coffee-grounds

It sounds quite unusual but Sony company is somewhat connected with professional fortune-tellers. The reason is that Sony uses coffee-grounds as an initial material while producing electrodes for lithium-ionic batteries. The coffee-grounds question was aroused not without a reason. In Japan, for example, up to 300 000 of traditionally office wastes are coffee-grounds which should be utilized every year. In 1996 engineers of Sony Company obtained the substance with high carbon levels, which was ideal for lithium-ionic batteries’ cathodes production.
Sony did not stop and the company went ahead. In order to avoid additional fuel expense for coffee-grounds heating and moisture removal, Sony experts proposed to use biological enzymes. Bacteria which were placed into coffee-grounds heated the substance up to 70C in the process of their vital functions. Only after that the water-free material was processed for industry needs. Though cathodes that are produced in such a technology do not help with utilization of wastes , they make it possible to cut the final price of lithium-ionic batteries up to 2 -10%.

Batteries made of Paper

According to “Nature” report, specialists of Rensselaer Polytechnic Institute have created a paper battery with the help of modern nanotechnologies. Cellulose is a basis of new material. Carbon nanotubes are built-in into the cellulose. There was a problem with cellulose material some years ago. This material could not be dissolved in the number of existing solvents. Nevertheless, the experts managed to select the proper ionic liquid, dissolve the cellulose and include the carbon nanotubes into the material. When the ionic liquid was removed, the paper layer was generated. The paper layer was bent and rolled. After these actions it took its original form. The scientists say that if this layer is covered with the layer of lithium, the paper bending battery can be produced.

On condition that the ionic liquid is not removed from the paper, the material will serve as a supercondencer. The tests reveal that nanopaper keeeps its properties even in temperatures which exceed the room temperature; it is not deformed while freezing and thawing. In spite of the fact that nanopaper is much less powerful when comparing with ordinary lithium batteries, the experts believe that such batteries will be commercially profitable in years.

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Replacement Notebook Batteries Provide Value

June 28, 2009 By: shoppingauthor Category: Computers No Comments →

If you own a notebook, eventually you will need to replace the rechargeable battery that was supplied with the computer when it was originally purchased. This is a demonstrated statement, and is not due to any fault of the battery itself but simply because the current technologies and battery chemistries result in batteries that have limited lifetimes.

A laptop computer battery is evidently a rechargeable battery, which is also known as a secondary cell. The usual battery chemistries that have been utilized in laptop computer batteries up to date have included nickel cadmium batteries, nickel metal hydride batteries, and lithium ion batteries. Almost all laptop computers today are supplied with lithium ion batteries.

Lithium ion batteries are most commonly used in today’s notebook computers because they have great energy to weight ratios, are not affected from the memory effect phenomenon, and since they lose their charge over a long period of time. Lithium ion batteries have been hypothesized as long ago as the seventies, but have not found practical application until fairly recently. Lithium ion batteries are also more friendly to the planet as they do not contain any heavy metals as most of the earlier battery chemistries.

Over time, you will begin to notice that your laptop computer’s battery does not run the laptop computer as long as it did when it was a fresh and new battery. This is due to the fact that the internal resistance of the battery grows as the battery ages and effectively cannot hold as large a charge as a new battery. Your computer’s utility software will normally indicate the charge level of your notebook’s battery and will let you know when the battery starts to fail.

When you know that you need a replacement laptop battery, you will find that there are several places available from which you can buy a battery. These include the original equipment manufacturer, otherwise known as the OEM vendor, stores that sell computer equipment including OEM and generic battery brands, and a number of online sites. When shopping for a replacement laptop battery, you certainly would like to save money.

The easiest way to find a direct replacement battery for your laptop computer is to simply purchase a cell from the company that made your computer. The downside is that you will always pay the most money when you buy the battery from the computer maker. You may be able to find the OEM battery from a nearby computer dealer or an online source, but sometimes there is no cost benefit associated with buying the OEM battery from another source and sometimes you may even end up paying more.

Usually, generic batteries provide the best value when you need to replace your laptop’s battery. It is a fact that the factories that produce these generic batteries also provide the batteries for the OEM suppliers. So fundamentally you could be getting the same battery that the computer’s manufacturer packages with a different label on it. These generic batteries are available from your local retailer and from internet stores. These batteries can save you a significant amount of money over the purchase of a battery provided by the computer vendor.

However, these generic batteries can be built at a number of different factories and, like anything else, some factories produce better batteries than others. When buying a generic battery, you will want to consider the reputation of the seller and, as much as anything else, you need to ensure that the battery provider will warrant that the battery will work with your computer. Laptop batteries are generally guaranteed for a period of anywhere from three to twelve months and it is critical that you verify that the battery operates correctly when you get it. Simply place it in your laptop computer and charge it as you normally would. If it charges completely and there are no error messages from your power management utility, you know that you are good to go. You also will have saved yourself a sizeable amount of money by buying replacement laptop batteries.

A review was performed to determine whether replacement laptop batteries could result in a savings to the consumer. The results were conclusive that a cost savings of half could be realized.