Archive for August, 2010

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31 08/10

Li-ion batteries in electric cars greener than believed

For the initial time, researchers at Empa have made a detailed life cycle assessment (LCA) or ecobalance of lithium-ion (Li-ion) batteries, in specific the chemically improved (i.e. much more environmentally friendly) version on the ones most frequently used in electrical vehicles.

The investigation shows that if the energy utilized to charge the battery isn’t derived from purely hydroelectric sources, then it is primarily the operation in the electric vehicle, which has an environmental impact, exactly as is the case with conventionally fuelled automobiles.

The size with the environmental footprint depends on which sources of power are employed to “fuel” the e-mobile.

About the other hand, the Li-ion battery itself has a limited impact on the LCA in the electric powered vehicle.

This is contrary to initial expectations that the manufacture of the batteries could negate the advantages in the electric powered drive.

Battery powered electric powered cars are usually promoted as the ideal solution on the challenges of future mobility, since they produce no exhaust gases in operation.

Li-ion batteries have established themselves over competing lead-acid and nickel metal-hydride (NiMH) types due to the fact they are lighter and can store additional energy.

Li-ion batteries are also basically maintenance-free, display no memory effect (loss of capacity when repeatedly charged after partial discharge), have a low self-discharge rate and are regarded as safe and long-lived.

Researchers at Empa’s “Technology and Society Laboratory” decided to come across out if they are also environmentally friendly for sure.

They calculated the ecological footprints of electric powered cars fitted with Li-ion batteries, taking into account all achievable relevant factors, from those associated with the production of individual parts all the way via towards scrapping on the vehicle as well as the disposal of the remains, including the operation with the vehicle throughout its lifetime.

The analyze shows that the electric powered car’s Li-ion battery drive is actually only a moderate environmental burden.

At most only 15 per cent with the total burden could be ascribed on the battery (such as its manufacture, maintenance and disposal). Half of this figure, that’s about 7.5 per cent with the total environmental burden, occurs during the refining and manufacture in the battery’s raw materials, copper and aluminium.

The production in the lithium, from the other hand, is responsible for only 2.3 per cent in the total.

“Lithium-ion rechargeable batteries aren’t as poor as previously assumed,” said Dominic Notter, coauthor with the analyze.

The Empa team concluded that a petrol-engined auto need to consume between three and four litres per 100 kilometers (or about 70 mpg) in order to be as environmentally friendly as the e-car studied, powered with Li-ion batteries and charged with a typical European electricity mix.

The study has just been published within the scientific journal “Environmental Science and Technology”.

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30 08/10

Sanyo’s Solar Power Assisted Bus

Sanyo Electric Co., Ltd. and Ryobi Group have unveiled a solar energy assisted bus to commemorate Ryobi’s 100th anniversary.

The jointly developed “Solarve” (short for Solar Vehicle) is the world’s 1st public transport bus equipped with photo voltaic panels.

Sanyo Amorton and Sanyo Strike solar panels mounted on the roof of the bus will offer electricity to internal LED’s for as much as 9 hours of continuous lighting. The buses are expected to begin service in Okayama City in Southern Japan from the beginning of next month.

The Sanyo Strike (Heterojunction with Intrinsic Thin layer) photo voltaic panel is really a hybrid module consisting of a thin monocrystalline silicon wafer encased in amorphous silicon layers. Sanyo states a Strike cell effectiveness of as much as 20.2% and an overall module efficiency of over 17.7%.

The Sanyo Hit photo voltaic panel was the primary hybrid solar module available on the Australian market and is really a well-known choice in house solar energy systems; not only for its high efficiency, but small footprint that makes it possible for for much more solar energy to be generated from a house’s roof space area.

Sanyo’s Amorton photo voltaic cells are thin, light and flexible amorphous cells fabricated on plastic film and are widely utilized on photo voltaic watches, calculators, thermometers and battery chargers. Amorton uses silane as its source gas and is fabricated making use of a plasma CVD method.

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30 08/10

Make Your Laptop Battery Last Longer: 3 Tips

1. Retain the Laptop Off Your Lap

“Batteries like to be at room temperature, and I do not imply like a room inside the tropics,” says John Wozniak, a distinguished technologist for Hewlett-Packard.

Although most of us call our portable PCs laptops, today’s high-performance notebooks aren’t developed to sit in your lap. Positive, they get warm and you may begin to feel uncomfortable after a even though, but that’s not the point. Most laptops have tiny legs for the bottom, designed to let a lttle bit of air flow underneath. When you’re functioning on a difficult surface, like a desk, there’s no problem, but when the notebook sits in your lap, it sinks down a lttle bit and air can’t circulate.

That will turn out to be a actual issue rather rapidly if you’re watching a movie, since playing a DVD keeps both the CPU along with the graphics chips busy and operating relatively warm. You’ll be able to avoid the difficulty by operating for the folding tray if you’re flying, or spending $20 or so on a pad stiff enough to give the laptop computer a bit of clearance.

Keeping the vents in your laptop clean does a lot to maintain heat from building up. A uncomplicated, but effective method would be to purchase a can of compressed air from any personal computer shop or hardware shop and blow out the dust.

2. A Small Unplugging Helps

Not so lengthy ago, most laptop computer batteries were NiCads, that’s, nickel cadmium based. That design had a fairly major flaw: if the battery was consistently charged ahead of operating most of the way down, it would no longer take a complete charge, no matter how extended it was plugged in. That was called battery memory, and the solution was to drain them each and every now and then and be positive they got a full charge.

Today’s lithium ion batteries do not have that issue, so don’t worry about recharging prior to the energy gauge is hovering near empty, says Wozniak.

Nonetheless, leaving them plugged in all the time isn’t a very good idea either, though it is tempting. In effect, the battery gives the user an uninterruptible energy supply, so when you expect the electricity to go off unexpectedly, it makes sense to keep the battery in spot when the machine is plugged in.

But do that too much, and your battery will degrade. So remove it should you do not plan to work unplugged for an extended period of time. The greatest way to shop a lithium ion battery is to let it drop to about 60 % of its charge and be positive you retain it in a reasonably cool spot, he says.

3. Comprehend the Specs

Remember, battery technology does not follow Moore’s Law. Having covered the engineering industry for very a whilst now, I’ve heard several promises that a real breakthrough in battery technologies was coming. Properly, it hasn’t–and Wozniak says he doesn’t see one on the horizon.

That’s not to say batteries haven’t improved; they have, with gains of about 6 percent to 8 percent per year, he adds.

Typically speaking, more cells per battery imply much more power, but that does not mean a 12-cell battery will give you 33 % more operating time than a nine-call battery. As an example, a 9-cell battery rated three. amp hours has just about the same energy as a 12-cell battery rated at 2.2 amp hours.

Instead of do the math, it’s simpler to check the specs and compare the quantity of watts, an simpler number to discover. As you’d guess, the actual run time a battery will yield is dependant on what the notebook is performing. Applications like video use a whole lot much more juice than writing or surfing the Web, obviously.

No electronics product will last forever, but treated nicely, your battery hang in there for at least two or three years.

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28 08/10

DVR Spy Camera For Your Home

The technological advancements have changed the patterns of lives because it has turned impossible into possible. Surveillance was considered a incredibly hard task since the conventional equipments didn’t have any capability to cover them simply because they were incredibly big in their sizes and often produced unsatisfactory final results. But as the technological innovation flourished; this field also became quite innovation in its nature. Now, you can find varieties of surveillance equipments available for general public through which they can make their life simpler and comfortable. The DVR spy photographic camera is an innovative photographic camera, as its name suggests, the digital voice recorder spy photographic camera. It has an potential to produce finest outcomes that can meet all of your expectations.

This spy camera can easily operate in harsh weather conditions but still the majority on the persons preferred to use it inside their house to maintain an eye on what is going on in their absence. Its extensive unique features and power enables it to perform multiple tasks at the same time. Due to its extensive attributes, it really is acquiring incredibly famous all around the world by each passing day. People use it in their homes for capturing one of the most rejoicing and memorable moments of their lives whether a friends get-together, family get-together or other parties at household. Most of the companies also use this spy digital camera to watch their employees to make sure that these are functioning with highest degree of honesty; they are not shrinking from function, to ascertain their productivity level and for other purposes.

Most of the folks use it in homes to maintain an eye more than the nanny of their children so that they will not beat or hurt their children, when they aren’t at home. It is possible to use this spy camera to collect concrete and undeniable evidences against your opponents, in order that you may get legal edge more than them. This spy camera has really extensive features which will definitely delight you the most. It’s very durable and you will not uncover any single mishap even after the continuous working of quite a few years. This photographic camera is really reliable as it can be offered with the prestigious brand name. Now, you will not need to worry about your property or offices’ security simply because this spy digital camera can record every activity without exposing itself.

This digital camera has been camouflaged in such a way that no one can quickly come across it. You are able to watch all the recordings over its 2.5 inch monitor too. It has rechargeable batteries which have a long life. This DVR spy camera is accessible in very cost-effective rates and as compared to the rates, its benefits are numerous or you are able to say that they’re matchless due to the fact it not only offers the feeling of being secured but it also offers the finest good quality outcomes.

The DVR spy digital camera is the greatest technological innovation that most in the persons prefer. DVR engineering may be the finest among a lot of recording techniques.

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26 08/10

Apple iPad – Better than a Smartphone and a Laptop

The Cupertino-based Apple uses its know-how and technologies of the iPhone with the legendary Apple’s new IPAD. With features, have won contracts in the world instantly, just the IPAD defines a new kind of mobile gadget that some experts say, is somewhere between a smartphone and laptop.

But if Steve Jobs of Apple is believed, it is much better than a laptop, much better than a smartphone. Much more kinship with the Kindle and popular gadgets like previous laptop computers, has IPAD by Apple with features that existed before the set smartphone and laptop.

If the Kindle the hearts of millions because of its monochrome LCD screen Apple has produced electrophoretic IPAD is certain that the same request, but with more features. With a 9.7-inch color LED-backlit Plane Switching (IPS) LCD screen with XGA resolution (1024 x 768), can not only read the pages of a book, but read through the images of color images videos and do a Kindle can not.

Powered by a 1GHz Apple A4 SoC (System on Chip) processor 16, 32 and 64 GB model options and the operation of the Apple platform IOS 4 IPAD still can not quite lost an entry level laptop, but if you only Online browsing and interested e-mail, social networking and multimedia experience captivating images, sounds and videos, IPAD wins hands down.

Its weight is 1.5 kg lighter than half of the laptops around, has a smaller footprint with a half inches thick and has 10 hours of video from the lithium-polymer that is more than double any laptop can offer on the market.

Multitouch capacitive touchscreen never been with a large screen of 9.7 inches. Just play with him, and you do not want to go back to your iPhone. You get a better three-axis accelerometer, which is essentially the IPAD visible in every direction, while the iPhone has only two axles.

It has run the same ambient light sensor and digital compass magnetometer on Java. In addition, nearly all of the data connectivity technology in the IPAD Apple. You have WiFi 802.11 a / b n g / /, Bluetooth with EDR and A2DP V21, USB 2.0 ports, one 30-pin coupled to a keyboard, a 3.5 mm audio connector and an SD card reader. Comes with a model, the 3G HSDPA, EDGE and 2G with GPS functionality with integrated A-GPS has.

While Apple IPAD is not intended to replace a phone that you can use a headset or use the built-in speaker and microphone to make and receive calls over 3G or WiFi and VoIP calls. Like the iPhone, have IPAD synchronized with iTunes on Mac or Windows and access to the App Store. In addition to hearing 10 hours of video, smartphone or laptop not with his music or 140 hours non-stop collapse of one month of standby time on a single charge.

By visiting the best contracts above can lower prices for Apple IPAD be found and remains a good place to get an iPhone 3G.

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24 08/10

Can Wax and Soap Clean Up Obstacles to Better Lithium Ion Batteries?

A little wax and soap can help build cheaper electrodes for lithium-ion batteries, according to a study in the August 11 edition of Nano Letters. The one-step method that allows developers to explore cheaper alternatives to the battery lithium-ion batteries currently on the market for metal.

“Paraffin a medium in which to grow looks good electrode materials,” said Choi Daiwon materials scientists of the Department of Energy’s Pacific Northwest National Laboratory. “This method helps researchers studied cathode materials for cheaper transition metals such as manganese or iron based.”

Consumers use long-life rechargeable lithium-ion batteries in everything from mobile phones to the latest portable gadgets. Some car manufacturers, they want to use in vehicles. Most lithium-ion batteries available today are designed with an oxide of metal such as cobalt, nickel, manganese or. Choi and his colleagues at PNNL and State University of New York at Binghamton was both cheaper and more stable metal phosphate in place to explore oxide.

The Tale Recharge

These batteries work because lithium is selfish and wants its own electron. Positively charged lithium ions normally hang in metal oxide, the stable, positive electrode in batteries. Metal oxide generously shares its electrons with the lithium ions.

Charging with current pumps electrons into the negative electrode, and when the lithium-ion see the free-floating negative charges through the battery, are they attracted to the metal cage to life. So out go the lithium ions leave the metal and its common time to spend enjoying their own private electrons.

But does not create the last thing – the use of the battery in an electronic device a channel through which electrons can flow slippery. Loss of electrons, the lithium ions back into the metal creep always waiting. Charging will begin on the whole sordid process.

Cheaper, Stabler

While cobalt also leads in lithium batteries, cobalt and nickel are more expensive than manganese or iron. In addition, replace phosphate for oxide provides a stable structure for lithium.

Lithium iron phosphate batteries are commercially available in some power tools and solar, but the synthesis of electrode material is complicated. Choi and his colleagues wanted a simple method to develop lithium-metal-phosphate in a good electrode in turn.

Lithium manganese phosphate – LMP – can theoretically some of the highest amounts of stored energy to the battery, weighs in at 171 milliamp hours per gram of material. High storage capacity allows the batteries to be light. But other researchers are working with LMP have not even managed to eek out 120 milliamp hours per gram as far from the material they have prepared.

Choi founded the 30 percent loss of capacity could be due to the lithium and electrons have their way through the metal oxide battle, a property called resistance. The less distance to travel lithium and electrons from the cathode, he thought, the less resistance, and the more electricity can be saved. A smaller particles would reduce that distance.

But smaller and smaller particles require lower temperatures. Unfortunately, lower temperatures, the metal oxide molecules does not line up well in the crystals. Chance is not suitable for cathode materials, the researchers needed a framework in which the ingredients – lithium, manganese and phosphate – in itself could make ordinary crystals.

Wax On, Wax Off

Paraffin is made of long straight molecules that are not made to react with much, and the long molecules could help things line up Soap – a surfactant to help as oleic acid – could distribute the growing crystals evenly.

Also, Choi and his colleagues the electrode ingredients mixed with melted paraffin and oleic acid and let the crystals grow, as they slowly increased the temperature. Of 400 degrees Celsius (four times the temperature of boiling water), crystals had formed and the wax and soap had been boiled. strengthening materials scientists usually metals by subjecting them high heat, so the team raises the temperature yet to fuse the crystals in a plate.

“This method is much easier than other ways of making lithium manganese phosphate cathodes,” said Choi. “Other groups of a complex, multistage process. We mix all the components heat up and have.”

To measure the size of tiny plates, the team a transmission electron microscope at EMSL, DOE’s Environmental Molecular Sciences Laboratory PNNL used on campus. Up close, tiny, thin rectangles poked around in all directions. The nanoplates about 50 nanometers thick – about a thousand times thinner than a human hair – and measured up to 2000 nanometers on a side. Further analysis showed, was the crystal growth suitable for electrodes.

To test, LMP, shook the team nanoplates free from each other and have a conductive carbon-bearing, which serves as the positive electrode. The team tested how much power could the material after charging and discharging to save fast or slow.

When the researchers nanoplates charged slowly over a day and then they released just as slowly, holding LMP battery mini a little more than 150 milliamp hours per gram of material is higher than other researchers were able to achieve. But if the battery was quick – say fired within an hour, that dropped to about 117, compared with other materials.

His best performance was a knock at the theoretical maximum at 168 milliamp hours per gram, when it was slow and unloaded over two days. Loading and unloading in an hour – a reasonable objective for use in consumer electronics – it allows a measly 54 milliamp hours per gram to save.

Although this version of an LMP battery charges slower than other cathode materials, “said Choi, the actual benefit of this work is that the simple, one-step can explore method, a variety of inexpensive materials that are developing hard has always been to work in lithium-ion batteries.

In the future the team will change as the carbon coating on the LMP nanoplates to assume their charge and discharge rates for possible improvements.

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19 08/10

Don’t overcharge your cell battery or it may explode

Every time there are messages from another phone battery explodes, it creates panic waves across the consumer landscape. Sometimes batteries explode because of a breakdown in the manufacturing process, in a sub-standard batch results. In such times, manufacturers always recall the defective product and replace it for free. Therefore it is always advisable to keep an eye and ear open to these announcements that always instructions on how to determine if your battery is part of the faulty batch or not accompanied.

Many other times, but batteries can explode if they are badly treated. Here are a few tips to ensure you deal with your phone and battery in the right way.

* First, to avoid high prices mobile phone battery. A longer charge time does not mean that cell phone battery last longer. Not at all!

* Do not use incompatible and unauthorized cell phone batteries and chargers. Many cases of exploding gadgets are involved in counterfeit products. In fact, many manufacturers now publishes guide to identify fakes. At any point of time when you have to discuss any questions about the compatibility of a product with your mobile phone to an authorized dealer. Buy And yes, never, or use batteries, improper packaging / suspicious look damaged or pushed.

* Even if your cell phone battery to replace in any way damage it right away, especially since such batteries are prone to exploding.

* Also, never wear your battery in your pocket or store it in your wallet. could be detrimental contact with other metallic objects in these places the battery terminals.

* Do not keep your cell phone or store in or around areas that are hot. These include cooking surfaces, near a clothing store “iron and even the glove compartment in the car.

* Never use a cell phone that feels hot’s. Overheated mobile phones and batteries can cause serious injury. Also make a phone charger immediately if there are indications that the phone or the battery is overheating. Get the phone by an authorized dealer, before it re-examined.

* Alternatively, do not get the battery wet. During the monsoon sure your phone to avoid dry within a sheath around each adverse event is stored.

* Keep your phone clean with a clean, soft cloth. Avoid fluids specially formulated for the purpose.

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18 08/10

some note to buy a second laptop battery(helpful)

Notebook computer battery is the “power source”, especially for those who often walk a friend, in addition select models of very long standby selling point, the timely preparation of a second battery is an urgent task. Meanwhile, the laptop battery is also a consumable, general use in 2012 was reduced significantly after exposure, usually coupled with some users do not pay attention to maintaining a working battery, the Apple a1175 battery performance, as also the rapid decay of examples of early retirement is not uncommon. Ran Unfortunately, the growing demand today, the battery market is not then further standardized. Not only changes the signs of counterfeiting occur from time to time, that is, original manufacturer, even in the same series There is also a man-made obstacles set up. And electoral laptop compared to the selection of the battery is not to mention easy!

A look at the parameters

For non-universal laptop battery, consumers should be masters of our own before buying the machine can accept the type of battery at the same time to avoid being cheated, to “see”

At present, in addition to individual low-end notebooks use nickel-metal hydride batteries, used in most ordinary lithium-Ion batteries, lithium polymer batteries using only part of high-grade ultra-thin notebook. Lithium batteries are generally the battery unit to protect the circuit and capacity for monitoring and communication circuit of several components. From the perspective of the parameters, the battery capacity is an indicator of concern. Overall 3000 ~ 4500mAh now, there are very few with a capacity 6000mAh. The theory of higher values in the same configuration using longer.

The manufacturer of laptop batteries have a more detailed description, we often see the “six-core 4400mAh”, “4-pin 2200mAh” nominal value such as batteries, over time, we believe that directly determines the capacity a 4400mAh or 2200mAh laptop spell.

In fact, we talk about computer power consumption, the total nominal power use, rather than just the present. The battery power should be multiplied by the current, voltage common 2200mAh, 3.6V battery, for example, could have used some small way the composition of four batteries in series, their voltage is 14.4V, 2200mAh capacity. Many 14-inch notebook, you can use 2 and 4 strings of 8-cell hybrid mode, the voltage remains at 14.4V, 4400mAh capacity doubled to reach, to ensure a longer time of use. However, the same is a 2200mAh, 3.6V battery, if we adopt the 2 and 3 strings of 6 cores hybrid approach, the battery capacity is it still 4400mAh, 10.8V voltage down, if we just look at capacity, its use of time should be, 8 and the same battery cells. If you press the power, then this 8-cell lithium battery, power should 63.36Wh, 6 cores for 47.52Wh, 4 cores for 31.68Wh. If according to this value, the advantages of 8-cell lithium battery can be seen.

Appearance, the general assembly of the mold shell battery is not original laptop battery specification, so loaded notebook computer appears to take a hard or loose loaded situation, gathering the battery is not original battery plate production print quality is good, writing and more rough is not clear, in any encounter when buying this kind of “original battery” do not buy. In addition, the renovation of the differences between products and new batteries are still traces its electrode wear weight and therefore does not gloss and new batteries, buy experienced so-called “new batteries” do not buy .

Comments:

Throughout, in addition to the “6-pin 4400mAh” parameter, the battery voltage will also need to know the parameters. From the application point of view, low-voltage large-capacity battery (more parallel, less in the series) to ensure the laptop standby time, while the battery is almost no additional cost!

Second, weigh the quality

Very often, the quality of both power and weight proportional, laptop batteries are no exception. Like the original battery protection circuit does more monitoring in place, the quality is better on batteries, so the weight of the assembly of the battery than jerry-building is much greater when you buy them by Dian Dian hand, compared with the original laptop battery light a lot of words Such batteries need to be careful!

As the recent past, Dell, Apple, Sony, Lenovo and other laptop caught fire after the other, making the image of the original battery much frustration, but overall the quality of original equipment batteries, or more remaining. So I believe that the choice should be based on a second battery or original products. Of course, the market compatible with many types of cells, some of the original brand notebook chip and IC design and manufacture of high quality batteries, not only have all the original battery protection, and stable performance, use of time is fairly long, the actual performance with the original battery is not much difference, but some small workshop production of the quality of the compatibility of the battery is not flattered, and internal circuit The battery design is very simple and the quality of batteries used in more times, and some have even adopted disassemble or brand-name batteries, battery that is compatible with the quality of the natural is not guaranteed; In addition, some laptop batteries over the original battery failure, a number of business through self-change battery system for original equipment batteries to get “new life .

However, this time piece of the battery is not the true meaning of the original battery, but rather is compatible with the battery, its quality depends largely on how the quality of the battery. So, is compatible with the battery if it is worth buying, in addition to prices, the key is to see how its quality. For people from small battery compatible workshop, even if the price is a big advantage, not worth buying.

Examples of laptop battery caught fire at home and abroad, mostly for IBM Thinkpad x40 battery usage caused by overheating. In other words, the battery in the event of abnormal, many times beyond the normal functioning of the state of a dangerous heat distribution and allows us to get the signal source. Under normal circumstances, the batteries are usually only expressed as micro-heat only. So, in our cells for a long time was detected after the test, hand-to-surface, if you feel hot, or hot, indicating that the quality of the hidden dangers that exist inside the battery, do not consider for the purchase.

Comments:

Weigh loss, measured surface temperatures Although it looks simple, but the safety of a battery has a great reveal the paper.

3 Performance Measurement

In the computer market and business face to face when you buy laptop battery, the battery testing is an essential part. First, look at the focus of the test charge cycles, and second, standby time.

Many people think that laptop battery life calculated according to life expectancy, but in fact not the case, the real factors that play a decisive role must be fully charge and discharge times. Therefore, the international brand of notebook product lines are included in its software, which offers a management tool for the battery. This tool by reading the battery pack in intelligent control chip to see such usage time of battery design capacity, actual capacity and charge-discharge times and other information. Through which users can understand some of the labels on the cell surface, did not see the information. Like Lenovo ThinkPad, Sony laptop battery and some other management programs, you can see detailed information battery, if the purchase is a new original equipment batteries, rechargeable batteries should pay attention if the frequency is 0 (as of charge cycles up to 2 ~ 3)

Second is to check the battery capacity. The battery fully charged capacity and ability to design comparison, if we find completely filled with a lot of capacity is lower than design capacity, indicating a significant reduction in battery performance is not recommended for purchases. If the battery of your laptop’s management program does not see the battery fully charged capacity options, such as using software to detect BatteryMon gain.

In addition, the compatibility between the battery and original battery has a large gap between the price of the business to prevent the battery as the original battery is compatible to sell, the battery management program must pay particular attention to “producers” and “Part Number” followed by the contents of the display. Usually the original equipment batteries are shown as Sony, SANYO, etc. the standard battery business name and as part, but is compatible with the contents of the battery display is varied, such as PS, or cmp, as well as IBM-compatible or IBM-X3x so.

Comments:

Should be pointed out that the manufacturers nominal standby time, battery power (WH) / Notebook standby power consumption (W) = Standby time (h) formula has been arrived at. Very difficult to achieve because of physical tests required by the official standby power, so when the battery Mitac BP-8050 using the time difference is not really official when the gap between nominal and the battery can not prove a problem!

Four Questions Services

Laptop batteries are also of goods, services, the same can not be ignored, not to mention the price of the current laptop battery is still not cheap!

From a warranty point of view, the battery of the notebook all the components parts in the shortest warranty period, most of the warranty is only 3 months to six months, and although some will not even warranty the column, The warranty for up to one year less the battery with little. Batteries such treatment has not been improved for separately purchased is, in general, new battery (with compatible battery) are eligible only for 3 months or 6-month warranty period, if it is second-hand battery, there will be approximately 7 days to 1 month warranty period. Therefore, consumers with payment be sure to ask before the battery warranty period and conditions, do not forget to ask for proof of purchase to the merchant (such as the invoice or receipt of a stamped), and let the business indicate battery warranty.

Overall, the market supply of laptop batteries are mainly official website of the brand notebooks and maintenance of points, laptops, and other merchants and online stores. The official website of the brand notebook batteries and maintenance of point of sale positive for the original goods, and users can also enjoy the regular after-sales service, drawback is that the prices are generally more high, computer businesses in town are mostly stocked with all brand laptop battery sales, the advantage of much cheaper price than the official website, inadequate quality of services vary widely, with the “Depot” is secretly “changing the core” phenomenon! Against such events, Sony, Dell, Asus and other manufacturers of maintenance centers, said there are problems with laptop batteries should be replaced as a whole, and should use the original batteries, regular service the center does not provide repair (ie, change the “core” to activate other) business. Recycle batteries are centrally, no “Depot Maintenance” said one. It shows that the cost of service companies have to buy the regular product!

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17 08/10

How to enhance the life of lithium-based batteries

Avoid frequent full discharges: Several partial discharges frequent recharges are better for lithium-ion than one deep. Avoid frequent full discharges because this puts additional strain on the battery. Calibration is important: Batteries with fuel gauge
(Laptops) should be calibrated by applying a deliberate full discharge once every 30 charges. If ignored, the fuel gauge would become increasingly less accurate and some cases cut off the device prematurely.

For long term storage: Keep the lithium-ion battery cool. Avoid hot car. For long term storage, keep the battery charge at 40%. Consider removing the battery from laptop when running on fixed power.

Keep it cool: If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing in the refrigerator.

Check date of manufacture: Avoid purchasing spare battery lithium ion for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.

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16 08/10

Are lithium-ion batteries the next threat to airline safety?

Worried about a possible terrorist strike, American Airlines flight attendants confiscated 58 cellphones, lithium-Ion battery and charging the device from a passenger on a flight June 23 New York Buenos Aires.

April, Tokyo police officers and firefighters rushed to an area at Narita airport baggage after a curling iron powered by a lithium-Ion battery checked bag caused a passenger to fire was being shuttled from an American Airlines jet a connecting flight.

Lithium-Ion batteries – the rechargeable energy source for cellphones, laptop computers and an increasing number of other portable electronic devices – has become a growing concern for the airlines in passenger cabins and cargo holds. Non-rechargeable lithium metal batteries such as cameras and flashlights are a concern, too.

When a lithium battery short-circuits or overheats, it can burn or explode. The fire cause may not be as easy to kill as a normal combustion fire.

FAA data shows that out on March 20, 1991, through of August 3, 2010, batteries and battery-powered devices are involved in 113 incidents in “smoke, fire, extreme heat or explosion” in passenger and cargo planes. The data are for non-lithium and lithium batteries and not a comprehensive list of such circumstances, the agency says.

In January, the Department of Transportation proposed strict rules for companies that ship cargo holds in lithium batteries. “The frequency of events, including the difficulty in extinguishing lithium-battery fire, warrants taking strong action,” Rep. Jerry Costello, D-ill., Chairman of the House Aviation Subcommittee, said the Transportation Department’s proposal.

Lithium-battery experts, security analysts and flight attendants wonder, though, if restrictive policies are also needed passenger aircraft cabins to prevent fire or worse: a possible attempt by a terrorist to bring down a plane of rigging a large number of batteries together to start a fire.

Right now, there is no limit on how many small lithium-Ion battery can take a passenger ride a flight.

Transportation Security Administration spokeswoman Kristin Lee says the agency has studied the matter. She says the TSA, which oversees the security of air, defined lithium-Ion battery for cellphones, laptops and cameras “can not be used as an explosive and not a security threat to personal carry-on volume.”

But some scientists who have studied the batteries raise doubts about the safety of passengers carry on board flights in their electronic devices, even those as small as those used to power cellphones.

Xie Jian, a mechanical engineering professor at Indiana University-Purdue University-Indianapolis, said portable electronic device is “pretty safe” for consumers. But, he says, can they be rigged together for a bomb.

That’s what worried the board attendants at American Airlines (AMR) flight to Buenos Aires in June. The passengers, who spent more than 30 minutes in a toilet and proper suspicion earlier flight, began removing batteries from cellphones and had lots of batteries, charging cellphones and devices on a tray table. Flight attendants reported that her actions and told the captain is to confiscate the device.

Xie, who makes lithium-Ion battery research for the military, says it was “frightening” that a passenger with 50 or so electronic devices, including many lithium-Ion batteries for cellphones and laptops, boarded the an aircraft. “I want to be very uncomfortable on that flight,” he said.

Amy Prieto, a Colorado State University chemistry professor who is also a lithium battery-expert, says some batteries can start fires that would be difficult to put out. But, he says, even 50 batteries rigged together “would not be such a bomb would take down a plane.”

Dan Abraham, a materials scientist at Argonne National Laboratory in Illinois, says even a single mobile phone battery can start a fire. “A smart terrorist could start fire with these things,” he said. “Any energy-storage device packs a lot of energy into a small space and can be used for good or bad.”

Special precautions?

Former FAA security director Billie Vincent says TSA screeners need to use common sense and call a supervisor when they saw a passenger with a lot of batteries and electronic devices.

“Why would someone with so many batteries?” Says Vincent. “If there is a need for special packaging for the batteries to hold charge, why is there no special precautions in the passenger cabin?”

Dinkar Mokadam the Association of Flight Attendants, which represents more than 50,000 flight attendants at 22 airlines, says a rule should be established to limit the number of devices that a passenger carries on board. Such regulations are not implemented “unless something catastrophic happens,” he said.

Despite the incident in June, American Airlines has not taken a public position on the number of batteries passengers can bring on board, says spokesman Tim Smith. However, according to Smith, the flight crew to Buenos Aires “is exactly as they are trained to do.” They observed suspicious behavior and correct it by confiscating phones the passengers and batteries, he says. The device is turned over to the “Argentine authorities,” referring to passengers is not a security concern but intended to sell them in Argentina.

Lithium-Ion battery carried on an aircraft is “almost” a hazardous materials issues for the Federal Aviation Administration, says Adam Comis, press secretary for the House Committee on Homeland Security.

The FAA, which regulates flight safety, classifies lithium batteries as hazardous material because they “present chemical and electrical risk” and a fire risk.

There have been several recalls of lithium-Ion batteries used in laptops and other consumer products that can spontaneously overheat and cause fires, “FAA spokeswoman says Sasha Johnson.

But the FAA and its parent agency, the Department of Transportation, do not limit the number of lithium-Ion batteries for laptops, cellphones and some other portable electronic devices that passengers carry on board. There is a limit for other lithium batteries with higher lithium content.

April 1999 – when a shipment of lithium batteries caught fire then was taken out of the cargo hold of a passenger plane’s in Los Angeles airport – the FAA has received reports of 40 fires involving lithium batteries and devices that powered by them, says Johnson.

The reports include:

• On September 9, 2009, a battery owned by American Airlines for use of passengers dropped during a flight and caught fire.

• On 8 August 2008, a passenger on an American flight from Washington to Dallas noticed his laptop was smoking. The passenger removed the battery pack and gave it to a flight attendant. The flight attendant to put the battery in a pot of coffee in the stern gallery and Sprite and poured water on it.

• On March 4, 2008, a passenger video display device for viewing the entertainment system emitted a “10-inch fleece of sparks and debris” in a United Airlines (UAUA) flight from Chicago to Tokyo. The device captain doused with water. A small area of carpet in the passenger cabin was damaged.

No extra batteries

FAA concerns about the risk of fire-Ion lithium and lithium-iron batteries are so great that passengers are not allowed to put extra in checked bags. They can, however, put them in checked bags if they are attached to an electronic device.

The Department of Transportation in January proposed shipments by manufacturers and distributors of batteries for laptops, cellphones and many other portable devices with stringent guidelines for hazardous materials in cargo holds.

Battery manufacturer should keep the results of design and safety tests, and their batteries must be packaged safer and more secure stored on the aircraft, the law says.

Passengers on the plane, they are stored in more fire-resistant compartments cargo fire-extinguishing system. FedEx (FDX) and other cargo on the plane, they would have to be stored in areas accessible to the pilots in the event of a fire.

A shipment of lithium-Ion battery caught fire as it was loaded onto a jet FedEx hub in Memphis company in August 2004. The National Transportation Safety Board, which investigates air accidents, said the probable cause is unapproved packaging used by shipper, AC propulsion. The package “is not enough” to protect the lithium, the NTSB said.

Lithium-Ion battery inside the cargo container when a fire destroyed cargo hold of a UPS (UPS) jet at the Philadelphia airport in February 2006.

The NTSB said it could not know what started the fire, but the fire most likely started in one of three container cargo contained lithium-Ion battery, laptop computers and other electronic devices.

The trade association for lithium-Ion battery manufacturer says it is deeply concerned about safety, and that the battery “currently minuscule risk starting fires.”

Batteries and electrical equipment makers oppose the Transportation Department proposed rules. They say the rules are expensive and less stressful than those of the International Civil Aviation Organization, which sets standards for 190 countries’ aviation authorities.

The prohibition of storage of cargo aircraft batteries could result in greater quantities shipped to plane passengers, says George Kerchner, executive director of the Portable Rechargeable Battery Association.

The Airline Pilots Association, which represents nearly 53,000 pilots at U.S. and Canadian airlines, says the proposed rules will make flying safer for passengers and flight crews.

The union would “like to see the fastest implementation of new policies,” says Mark Rogers, dangerous goods trade union expert.

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