laptop Battery World

The Sonata battery–which the company is set to show off at the Demo ‘07 show taking place this week in Palm Desert, Calif.–is safer than conventional laptop batteries, but is electrically and mechanically compatible to current notebook designs, according to the company. Notebook makers can thus drop it into their existing models, said CEO Christina Lampe-Onnerud, who added that Hewlett-Packard has been testing it for 18 months.

As a bonus, the Sonata battery can be charged to 80 percent capacity in about 30 minutes. Conventional notebook batteries take one to two hours to get to 90 percent capacity.

“We picked 30 minutes and drove development to that,” Lampe-Onnerud said.

The company is part of a wave of battery start-ups that have emerged in the past few years. Most got started initially to improve the runtime on notebooks or power tools. A raft of explosions and recalls, however, have also pushed safety to the forefront.

The popularity of hybrid and electric cars has also juiced the market. Last week, A123 Systems, which makes lithium ion batteries(gd761,kd476) for plug-in hybrid cars, announced it had raised $40 million more in venture capital funds.

Boston-Power has been one of the more noteworthy new entrants in part because the somewhat secretive company, which came out of semi-stealth mode late last year, employs many scientists and executives, like Lampe-Onnerud, who have worked in the battery industry for years. Along with showing off the battery publicly for the first time this week, Boston-Power also announced it closed a second round of funding for $15.6 million.

There is no magic silver bullet inside the Sonata, Lampe-Onnerud said. Instead, the battery differs from conventional notebook batteries through a large number of design tweaks.

“We understand the system. We don’t have a killer chemical,” she said.

The can, or outside casing around the battery cells,inspiron b120 battery,inspiron b130 battery, is made from a metal alloy that is stronger than the iron cans used with notebook batteries and thus will remain intact, in the case of a thermal reaction, or fire, according to the company.

Boston-Power also spent a lot of time on the interrupt system, which prompts the battery to shut down permanently if there is danger of a reaction. (Replacements are covered by a three-year warranty, which Lampe-Onnerud says is longer than the industry average.) The company can’t guarantee the batteries will never have problems, but it has added safety features not seen in ordinary batteries.

“If it is really damaged, I don’t want it to work again,” she said.

At the same time, the battery generally meets the performance characteristics of conventional batteries(latitude d600 battery) on the market today.

HP is likely the first customer, according to Lampe-Onnerud. A contract to put the battery inside a notebook has yet to be signed, but it’s possible a notebook with a Boston-Power battery could hit the market by summer, she said. John Wozniak, an HP distinguished technologist, will appear with Lampe-Onnerud during the Demo presentation.

An HP representative said the company has been testing the batteries and is pleased with the results, pavilion dv6000 battery is better ,but added that further testing will occur. A notebook containing the batteries potentially could come out this year, the representative added, but nothing has been signed and, again, further testing will occur.

Typically, large manufacturers move slowly and conservatively when adopting new components, and then introduce them on a limited basis.

The Sonata will sell for a premium, but Lampe-Onnerud would not disclose details on pricing.

The big challenge facing Boston-Power now is whether it can move into high-volume manufacturing. The company already has an alliance with a large Chinese contract manufacturer.

While Lampe-Onnerud was somewhat tight-lipped about how Boston-Power’s product differs from conventional batteries, a patent search indicates that one change will involve altering the chemistry of the cathode. Currently, cathodes are made from lithium cobalt compounds. The July 2005 patent, suggests swapping that out for lithium nickel materials.latitude d830 battery,latitude d500 battery.

More information can be found under a second patent from February 2005. Although a company’s patents can lead to future products, there is no guarantee that a correlation exists, and Boston-Power has several pending, unpublished patents.

New Lithium Battery Can Store And Deliver More Than Three Times Power Of Conventional Lithium Batteries.

University Of Waterloo has laid the groundwork for a lithium battery that can store and deliver more than three times the power of conventional lithium ion batteries.(gd761,kd476)

The research team of professor Linda Nazar, graduate student David Xiulei Ji and postdoctoral fellow Kyu Tae Lee are one of the first to demonstrate robust electrochemical performance for a lithium-sulphur battery. The finding is reported in the online issue of Nature Materials.Many laptop batteries are made of them,such as dell xps M1330 battery ,inspiron b120 battery ,

The prospect of lithium-sulphur batteries has tantalized chemists for two decades, and not just because successfully combining the two chemistries delivers much higher energy densities. Sulphur is cheaper than many other materials currently used in lithium batteries. It has always showed great promise as the ideal partner for a safe, low cost, long lasting rechargeable battery, exactly the kind of battery needed for energy storage and transportation in a low carbon emission energy economy.

“The difficult challenge was always the cathode, the part of the battery that stores and releases electrons in the charge and recharge cycles,” said Dr. Nazar. “To enable a reversible electrochemical reaction at high current rates, the electrically-active sulphur needs to remain in the most intimate contact with a conductor, such as carbon.”

The Canadian research team leap-frogged the performance of other carbon-sulphur combinations by tackling the contact issue at the nanoscale level. Although they say the same approach could be used with other materials, for their proof of concept study they chose a member of a highly structured and porous carbon family called mesoporous carbon. At the nanoscale level, this type of carbon has a very uniform pore diameter and pore volume.

Using a nanocasting method, the team assembled a structure of 6.5 nanometre thick carbon rods separated by empty three to four nanometre wide channels. Carbon microfibres spanning the empty channels kept the voids open and prevented collapse of the architecture.

Filling the tiny voids proved simple. Sulphur was heated and melted. Once in contact with the carbon, it was drawn or imbibed into the channels by capillary forces, where it solidified and shrunk to form sulphur nanofibres. Scanning electron microscope sections revealed that all the spaces were uniformly filled with sulphur, exposing an enormous surface area of the active element to carbon and driving the exceptional test results of the new battery.Dell inspiron E1505 battery ,latitude d830 battery .

“This composite material can supply up to nearly 80 percent of the theoretical capacity of sulphur, which is three times the energy density of lithium transition metal oxide cathodes, at reasonable rates with good cycling stability,” said Dr. Nazar.

What is more, the researchers say, the high capacity of the carbon to incorporate active material opens the door for similar “imbibed” composites that could have applications in many areas of materials science.The technology can be used in laptop battery area,in the future,we can buy better dell gd761 ,kd476 battery .

The research team continues to study the material to work out remaining challenges and refine the cathode’s architecture and performance.

Dell Latitude D830 battery life time can be increased or decreased depending on the applications and tasks that you have your laptop doing. This article will tell you how to increase your Dell Latitude D830 battery life time.

Dell Latitude D830 battery life time can be increased or decreased depending on the applications and tasks that you have your laptop doing. For example, if you are playing a DVD movie, much power is being used, shorter time will your Dell Latitude D830 battery be used. If you are burning a CD-R/CD-RW or playing a full screen 3D video game, much power is being used. All these things take more power and in effect lessen the amount of time that you have in “portable” mode.
It is best to try to plug the laptop into the wall if possible in these situations. Remember that you can also get car power adapters for your laptop; this will charge your Dell Latitude D830 battery and power your laptop while you are on the road. Programs that take little power (giving you longer laptop battery life) include word processing programs like Microsoft Word or Corel Word Perfect, Microsoft Excel, Microsoft Access, Outlook Express, Internet Explorer, AOL, CompuServe, or any similar programs. Even the colors displayed on your screen can affect your Dell Latitude D830 battery life. Lighter colors take more power to produce. External connections such as USB Mice, USB Scanners, Memory Cards, Zip Drives, etc. all take more power from your precious Dell battery life. Keep these things in mind when power is of the essence.

Here are some tips to extend the life of your laptop battery:

1. Power down the display

Lowering the brightness may give you as much as an extra hour of runtime. And to increase even more the lifetime of your laptop battery lower the screen resolution and color depth. This will decrease the workload on the GPU, thus extending the battery runtime.

To change this settings follow the steps below:

2. Turn off unused devices

Many new notebooks provide a hard-wired On/Off switch for the Wi-Fi radio for this reason.
To save even more power go to the Control Panel, select System–>Hardware–>Device Manager, and disable the following items: Ethernet adapter, infrared transceiver, and Bluetooth radio . You should do this beacause having Bluetooth enabled and not using it actually consumes quite a bit of power.

3. Decrease hard drive activity

Defragmenting your hard drive regularly will decrease the frecuency with which your hard disk has to spin, therefore the dell inspiron E1505 battery will last longer. This is due to the fact that defragmentation optimizes the placement of the data on the drive and when a program makes a request for certain data it can be found more quickly.

To defragment your hard disk follow the steps in this article.

Another way to decrease hard drive activity is to set your paging file to a fix value, and this value should be around 1.5 times the amount the RAM you have installed on your computer.

To set the paging file go to the Control Panel and click through System -> Advanced -> Performance Settings -> Advanced -> Virtual Memory Change.

4. Disable startup items

Startup items are programs that load into memory every time Windows boots up and cause other open applications to spill over virtual memory and adds to the CPU load, shortening battery runtime. Here is how to remove some of them that are not necessary.

5. Condition the battery

Battery memory is where the dell inspiron b120 battery becomes conditioned to run for less time than it is designed to run. Say for example, you run your computer on latitude d830 battery for an hour and then you plug it back in to let it recharge. The battery will become conditioned to run only an hour before it runs out of juice.

To correct Battery Memory problems, you must completely drain the dell battery and recharge it. To completely drain your dell xps m1330 battery, you must go into your Windows Control Panel and select Power. Then you must turn Power Management Off. Next, you must go into your BIOS and make sure that if there is a power management setting there, that you turn it off as well. In most cases, once you are inside the BIOS, you will highlight Power Management and press Enter. Then locate the item Hibernation at Critical Battery, and by using the Minus sign, change the setting to Off. Once these steps have been completed, then use your Escape key to return to the top level menu, and select Save Settings and Exit.

Once you have completed turning off the power management in both the BIOS and the Operating System, you must unplug the computer, turn the computer on and let it run until it completely runs out of electricity. Then you should charge the battery for 12 hours. At the end of the charging cycle, then run the computer again until the inspiron e1505 battery is dead, and then charge the battery for 12 more hours. You should repeat this process four times, before returning the computer to its original power management settings.

A great little tip to keep in mind is that if you do keep your laptop plugged in for an extensive period of time REMOVE the battery. Let it discharge and give it a break. This will extend your battery life quite a bit.

Another way to condition your battery is to keep it cool. It’s best to use (and especially charge) your batteries at room temperatures. Extreme conditions can drain your battery quickly.