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Archive for September, 2009

Li-ion battery industry ready

Sep 30

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July 1, begin to carry out-new energy automobile manufacturing companies and product access management rules,” which states that “the use of lead-acid battery hybrid passenger cars, pure electric and pure electric passenger cars, commercial vehicles, and the use of metal hydride Nickel-powered hybrid vehicle is classified as mature products. “Prior to the loudest voices were included in the lithium cell vehicle development stage, not a large-scale promotion of the column.

Conducted in Frankfurt, Germany Frankfurt auto show in order to Daimler – Benz, Volkswagen, Toyota car dealer, represented expressed their optimistic about the development of lithium batteries, and a series of Li-ion laptop battery pack equipped with the hybrid to reduce vehicle carbon emissions. Such as the Toyota van in carbon emissions of a mere 60 g / km (average annual emissions from ordinary cars 5000 kilograms).

Then prospects for lithium batteries in the end?

New energy electric car the most important components is the driving force batteries(gd761,kd476), electric motors and energy conversion control system. The new energy vehicles demanding on the battery, you must have a high specific energy, high specific power, fast charging and deep discharge performance, and requires the lowest possible cost, service life as long as possible. Therefore, the power battery is a technical threshold of the highest, is also the most concentrated part of the profits.

Lithium batteries into the fast-growth period

More auto manufacturers choose lithium batteries as a new energy vehicles motive power, industrial output value contains huge potential.

The traditional lead-acid batteries, nickel-cadmium batteries and nickel-metal hydride battery technology itself is relatively mature, but they are used in automotive batteries as a power, there are still major problems. Li-ion battery(VGP-BPS2C,VGP-BPS2A) has a small size, light weight, high voltage (which is nickel-cadmium batteries, nickel-hydrogen batteries 3 times) than the energy of large (up to 165WH / kg, nickel-hydrogen batteries 3 times), cyclic long-lived, self – discharge rate is low, no memory effect, no pollution, safety, and good, therefore, car manufacturers more choices of energy use lithium batteries as a new car battery power.

China’s lithium-ion battery industry began late in Japan, but developing very fast in recent years, especially in the power lithium-ion battery(inspiron e1705 battery,xps m1330 battery) research and development invested a great deal of financial and material resources. China’s automotive lithium-ion battery R & D project has been the national “863″ key project, much of the material to achieve the localization and the introduction of multi-national has been self-built production lines and supporting materials, factories have more than one, have been the formation of large-scale production, intense market competition.

Lithium battery industry as car tremendous value inherent potential of electric vehicles battery materials upstream suppliers and downstream of the car manufacturers have begun to enter the automotive battery business. Li-ion battery is behind the hot car prices on the plug-in hybrids (also known as plug-in hybrid electric vehicles) and pure electric vehicle market prospects of the recognition and R & D capabilities of their current concerns.

Such as the United States Ford, Toyota, Mitsubishi, Nissan, Hyundai, France, Courreges, Ventury and other companies have started their own lithium battery Motor Vehicle Program. While the domestic car manufacturer BYD, Geely, Chery, Lifan, ZTE and other car firms also have their own hybrid and pure electric vehicle powered by lithium battery power.

Therefore, from the development cycle, the current automotive lithium battery market is out of the start-up stage and started into rapid growth stage.

Insufficient to resolve the charge and over-discharge phenomena

safety performance and vehicle power battery management system is the bottleneck of the development of lithium batteries.

At present, the downstream enterprises in China BYD, Wanxiang Group, Shenzhen BAK Battery, Tianjin Lishen Battery and the United States Myers joint ventures. At present the only control vehicle lithium ion phosphate battery pack(inspiron b120 battery,inspiron b130 battery) large-scale production technology, BYD Company, has officially launched its self-developed battery-powered pure electric vehicles E6 and hybrid F3DM.
, However, hinder the development of lithium-ion battery power bottlenecks are: safety performance and vehicle power battery management system.

Automobile manufacturers based on the safety of people-oriented concept, the safety of the battery presented a very high demand. As the vehicle power battery voltage is 12V or 24V, single power lithium-ion battery voltage is 3.7V, so must be used by multiple cells in series, but difficult to achieve because of the battery charge and discharge completely homogeneous, resulting in the battery charge will appear Discharge imbalance, which occurs under charging and over-discharge phenomenon, the situation will lead to a sharp deterioration in battery performance, eventually leading to the entire group of cells does not work, or even scrapped, greatly affect battery life and reliability.

Therefore, power lithium-ion battery to get a good application, need materials, batteries, management systems, taking into account the mechanical processing and other aspects. Therefore, the upstream and downstream enterprises should work together to the battery as the core of the material, the management system requests formation of an industry group, would be conducive to technological advances and system costs.

Midstream materials manufacturers continue to realize the localization and improvement of technical

Cathode materials for lithium battery(gd761,kd476) is high barriers to entry, capacity minimum; anode materials for the industrialization of China has been achieved; electrolysis fluid and membrane technology is still dependent on imports.

Lithium battery materials can be divided into electrode (positive / negative) materials, separator and electrolyte. Li-ion battery cathode material is the core of the current lithium cobalt oxide, lithium manganese, lithium and nickel-cobalt-manganese-based lithium ion phosphate. Ze Yi graphite anode material, solid carbon particle-based; in the middle of positive and negative electrodes while the battery electrolyte and separator.

As high barriers to entry, lithium battery cathode material is the smallest capacity, which is the whole industry chain, the most promising aspect. Cathode materials currently in production companies are: China Baoan, CITIC Anhe Shanshangufen, BYD.

Compared with the cathode materials, anode materials, graphite, solid carbon particle, accounting for the proportion of low-cost lithium batteries(inspiron e1505 battery,inspiron 6000 battery), and the domestic has been achieved industrialization. Currently engaged in lithium battery cathode material production enterprises are the top three Chinese national security, Shanshangufen long shahai capacity. It is worth noting that the current negative electrode materials, while able to basically meet the domestic market demand, but with the increasing popularity of new energy vehicles in future this demand will be a massive shortfall.

Domestic battery manufacturers supporting electrolyte has been basically achieved domestically. The electrolyte lithium hexafluorophosphate main raw materials, accounting for about 50% of the cost of the electrolyte, its production cost is 10 yuan / ton, priced at 40 yuan / ton, gross margin as high as 75%, but the market was largely Kanto Electric the chemical industry, SUTERAKEMI-FA, Morita chemistry, several Japanese companies a monopoly.

Diaphragm materials, the Department of Li-ion technology, the highest barriers to a high value-added material, gross profit margin is usually 70% or more, accounting for the cost of lithium batteries 20 ~ 30%. It is reported that a car need to 1000-2000 m2 membrane. At present, a serious shortage of market supply diaphragm, most dependent on imports, the market dominated by Japanese Asahi Chemical Industry, Tonen Chemical, and the United States Celgard dominate. Domestic companies able to produce membrane only star-source technology, Jinhui High-Tech two technologies are relatively mature.

Upstream resources and technical barriers to seek a breakthrough in

lithium ion phosphate power battery(thinkpad t60 battery) cathode materials, the most promising investment opportunities, but the reserves are limited; simultaneous separation of lithium carbonate in Technology is only a small number of the hands of foreign companies.

Lithium ion phosphate power battery cathode materials, the most promising investment opportunities, the key raw materials, lithium iron phosphate is lithium carbonate, lithium carbonate derived from the mineral resources, in the nature reserves are limited, has a strong regional and scarcity, are scarce resources. Thus, in the new energy automotive industry chain, the strategic importance of lithium carbonate resources become particularly prominent.

At present, the global lithium carbonate industry, the status quo, resource threshold high, capacity is highly concentrated. As of the end of 2007, a major international manufacturers have Chile’s SQM, the United States, FMC and Germany Chemta l l total annual capacity of 78,000 tons, accounting for 80% of global market share. Due to large-scale production enterprise must have reserves of lithium resources are more abundant in salt lake resources, mining rights, making the resources of the industry with higher barriers to entry; the other hand, the vast majority of the world’s resources are high-magnesium salt low lithium type, from the and high-magnesium low lithium brine purification separation of lithium carbonate in the process technology is very difficult, but these techniques only a small number of foreign companies rests in the hands, so the industry is highly technical barriers.

The current domestic production of lithium carbonate enterprises mainly in Tibet, mining, CITIC Guoan, Western Mining Group, Qinghai Salt Lake Group, the four companies, while the Tibetan mining and CITIC Guoan has accounted for the vast majority of , the two companies in 2008 total production of lithium carbonate is not more than 4000 tons.

It is estimated that each new type of electric vehicle needs about 0.08 tons of lithium carbonate, lithium batteries(xps m1330 battery,latitude d830 battery) once the driving force large-scale application of new energy vehicles, only new energy vehicles by 2012 the demand for lithium carbonate will reach 5 million tons. While the domestic prices of industrial-grade lithium carbonate at 4.5 yuan / ton, battery grade lithium carbonate prices by 7 yuan / ton, high purity lithium carbonate price is as high as 10 yuan / ton, the domestic involved in new projects because it is used salt lake brine lithium carbonate extraction, the production cost 10000 ~ 1.5 yuan / tons. Therefore, the market generally felt that the profitability of lithium carbonate products is very high

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Dell inspiron E1505 Laptop Battery Tips

Sep 20

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1. Defragmet your hard drive regularly – The less your hard drive spins – less demand you are going to put on the hard drive and your battery. Make your hard drive as efficient as possible by defragging it regularly.

2. Dim your screen – Most laptops come with the ability to dim your laptop screen. Some even come with ways to modify CPU and cooling performance. Cut them down to the lowest level you can tolerate to squeeze out some extra inspiron E1505 battery juice.

3. Cut down on programs running in the background – Itunes, Desktop Search, etc. All these add to the CPU load and cut down dell inspiron E1505 battery life. Shut down everything that isn’t crucial when you’re on battery.

4. Cut down external devices – USB devices (including your mouse) & WiFi drain down your gd761 ,kd476 battery. Remove or shut them down when not in use. It goes without saying that charging other devices with your laptop when on battery is a surefire way of quickly wiping out the charge on your laptop battery.

5. Add more RAM – This will allow you to process more with the memory your dell laptop has, rather than relying on virtual memory. Virtual memory results in hard drive use, and is much less power efficient. Note that adding more RAM will consume more energy, so this is most applicable if you do need to run memory intensive programs which actually require heavy usage of virtual memory.

6. Run off a hard drive rather than CD/DVD – As power consuming as hard drives are, CD and DVD drives are worse. Even having one in the drive can be power consuming.

7. Keep the battery contacts clean – Clean your xps m1330 battery’s metal contacts every couple of months with a cloth moistened with rubbing alcohol. This keeps the transfer of power from your dell battery more efficient.

8. Take care of your battery – Exercise the insprion e1505 Battery. Do not leave a charged xps m1330 battery dormant for long periods of time. Once charged, you should at least use the battery at least once every two to three weeks. Also, do not let a dell li-ion battery completely discharge. (Discharing is only for older batteries with memory effects)

9. Hibernate not standby – Although placing a laptop in standby mode saves some power and you can instantly resume where you left off, it doesn’t save anywhere as much power as the hibernate function does. Hibernating a PC will actually save your PC’s state as it is, and completely shut itself down.

10. Keep operating temperature down – Your dell laptop operates more efficiently when it’s cooler. Clean out your air vents with a cloth or keyboard cleaner.

11. Set up and optimize your power options – Go to ‘Power Options’ in your windows control panel and set it up so that power usage is optimized (Select the ‘max battery’ for maximum effect).

12.Don’t multitask – Do one thing at a time when you’re on battery. Rather than working on a spreadsheet, letting your email client run in the background and listening to your latest set of MP3’s, set your mind to one thing only. If you don’t you’ll only drain out your Dell laptop battery before anything gets completed!

13. Go easy on the PC demands – The more you demand from your Dell notebook computer, passive activities like email and word processing consume much less power than gaming or playing a DVD. If you’re got a single battery charge – pick your priorities wisely.

14. Get yourself a more efficient laptop – Laptops are getting more and more efficient in nature to the point where some manufacturers are talking about all day long batteries. Picking up a newer more efficient laptop to replace an aging one is usually a quick fix.

15. Turn off the autosave function – MS-Word or Excel’s autosave functions are great but because they keep saving regular intervals, they work your hard driver harder than it may have to. If you plan to do this, you may want to turn it back on as the battery runs low. While it saves battery life in the beginning, you will want to make sure your work is saved when your gd761,kd476 dies.

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European Union decide to develop laptop batteries

Sep 16

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On August 8, 2009, published in the European resolution 2009/603/EC Commission to develop batteries and registration requirements of the battery manufacturer.

Previously, the provisions on laptop battery manufacturers Resolution No. 2006/66/EC of these products must be registered, but in order to avoid an undue burden on manufacturers, the Commission considers it necessary to develop apply to the entire European Union rules of procedure. Disclosure requirement should be clear that should not have to follow the manufacturer May require duplication of registration procedures other.So that we can get cheap and high quality xps m1330 battery ,xps m1210 battery,inspiron 1300 battery.

Under the law of battery, “producer” means a State member for the first time in a form of vocational or batteries (including installation of equipment or a car battery or battery) introduced the members to any person within the market. Therefore, the “producer” includes the territory of each member importers battery.

Resolution No. 2009/603/EC of the European Commission lists the following major provisions: The recording should be in paper or electronic form authorized by the Member States or registered institution handle, and may be another part of the process of registration; only producers in their first form of professional battery or Dell xps M1330 battery in the market to provide member registration once; annex to the resolution required for inclusion in the disclosure of information, including name and address of manufacturer, the battery manufacturer and market the type of xps m1330 battery (mobile, industrial or automotive use), instructions on how to take responsibility for production data.

Costs and fees are calculated in proportion; When manufacturers are no longer members of domestic producers, should the list.

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Dell Inspiron E1505 all-around Review

Sep 14

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There are many dell inspiron e1505 laptop review,now let me give your a all-around revie for e1505.

DeLL inspiron E1505 spec:

  • Limited Software Package
  • Media Center OS Without Requisite Hardware
  • Intel Core Duo T2300 (1.66GHz) Dual Core Mobile Processor
  • 512MB PC2-4200 DDR2 Memory
  • 40GB 5400rpm Hard Drive
  • lithium-ion battery (dell gd761,kd476)
  • 24x CD-RW/DVD Combo Drive
  • 15.4″ WXGA (1280×800) Wide Screen LCD
  • Intel GMA 950 Integrated Graphics with 128MB Shared Memory
  • v.92 56Kbps Modem, 10/100 Ethernet and 802.11b/g Wireless
  • Four USB 2.0, One FireWire, Express Card/54 and 5-in-1 Media Card Reader
  • 14″ x 10.5″ x 1.5″ @ 6.2 lbs.
  • Windows XP Media Center Edition 2005 and Word Perfect 12 Word Processor
  • Guide Review – Dell Inspiron E1505

    • Intel offers two new mobile processors based upon the Core architecture, the Solo and Duo. Most budget notebooks would likely use the Solo single core processor in order to save costs. Dell is one of the few companies offering a Core Duo T2300 processor with its Inspiron E1505 in a budget configuration. This processor significantly boosts performance while still allowing long inspiron e1505 battery life. It is matched up with 512MB of PC2-4200 DDR2 memory.

    In order to include the processor, Dell needed to reduce other costs and much of that came from the systems storage. The system only features a 40GB hard drive that is fairly small for today’s notebooks. Thankfully it is a faster 5400rpm model,6600mAh ,9 cells dell inspiron e1505 battery pack.. The system also forgoes a DVD burner for a 24x CD-RW/DVD combo drive allowing users to create music or data CDs or watch DVD movies.

    The Inspiron E1505 uses the standard size 15.4” wide screen LCD panel found in many notebooks. It is powered by the Intel GMA 950 integrated graphics that shares 128MB of the system memory. This is a step up from older Intel graphics solutions but it still lacks the power for many 3D gaming applications.

    Software is a big issue for the Inspiron E1505 system. Dell only offers the Word Perfect 12 word processor program and no other productivity software. Those needed this will add to the cost of the system. It also uses the Media Center OS but lacks any hardware such as the remote or TV tuner with the system to take advantage of the features.

    The Bottom Line

    The Dell Inspiron E1505 is probably one of the fastest budget notebooks available thanks to the new Intel Core Duo processor, but the system does sacrifice other features in order to be priced under a thousand dollars.

    Pros

  • Strong Intel Core Duo Processor
  • Good dell inspiron e1505 Battery Life

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    sony cybershot h3 digital camera introduction

    Sep 9

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    If you’re reading this, then you probably already know that there are a lot of different kinds of cameras in the world. This year, we saw the birth of a new variation with the advent of superzooms that don’t have electronic viewfinders, such as the Sony Cyber-shot DSC-H3 original battery code np-bg1 I’ll be writing about here. The upside is that the cameras can be smaller than their EVF-laden counterparts, and if you despise peering into a tiny hole at an LCD while framing your shots, then you’ll welcome this evolution. However, if you’ve discovered as I have that an EVF can come in handy when shooting certain subjects (I like using one when shooting baseball batters), then you might want to check out one of Sony’s other superzooms, such as the DSC-H7 or DSC-H9 , these two digital camera battery code sony np-bg1.

    While the H3’s small body design (for a superzoom) is definitely handy when trying to fit it in a bag or jacket pocket, it leaves few options for the button layout. Sony basically had to put the zoom rocker smack in the middle of where your thumb should naturally rest, which might seem good at first, but I ended up accidentally nudging it often when shooting, throwing off my zoom setting and messing up the framing of my shot. If Sony would’ve moved the shutter button a little to the left and the mode dial forward, the zoom rocker could’ve been moved farther right and given room for your thumb. However, as the body design goes, that’s the biggest flaw. The grip, though small, is effective–curl your middle finger over the top of the grip, and the rest of your fingers fall nicely into place, though it does leave your pinky dangling, which always irks me. It seems as though camera makers have begun to despise the pinky finger. Most entry-level dSLRs and almost all superzooms have grips that can’t fit a pinky.

    Dominating the front of the camera is a Carl Zeiss-branded Vario-Tessar 10x optical 38-380mm equivalent f/3.5-4.4 zoom lens, which feeds light to an 8.1-megapixel CCD sensor. Around back you’ll find a 2.5-inch, 115,000-pixel LCD. Caffeine addicts should be pleased to know that the H3 includes Sony’s Super Steady Shot optical image stabilization to help compensate for hand shake. In case the built-in lens isn’t wide or long enough for you, Sony offers both a 0.7x-wide angle converter (VCL-DH0758 bp-511) and a 1.7x telephoto converter (VCL-DH1758). The necessary adapter ships with the camera and can also accept 58mm screw-on filters. The camera also comes with a lens hood that attaches to the front of the adapter. Unfortunately, it’s so large that it obscures a large portion of the flash, which makes the use of fill flash almost useless if you use the hood. However, the adapter itself can likely provide enough shade from the sun when the lens is zoomed to its widest, which means that the hood is only really necessary when shooting telephoto shots, in which the camera’s built-in flash probably won’t be able to provide fill flash anyway.

    As is the rage these days, Sony separates the H3’s menu system into two sections. If you press the Menu button, it brings you to the shooting menu, which is home to settings you change often while shooting, such as image size, face detection, exposure and flash compensation, ISO, white balance, and more. If you press the Home button, you go to the setup menus, which let you control less-oft-changed settings, such as whether you have a lens adapter attached, or whether you want the AF assist light on or off. The menus use a new design that looks very similar to the menus on Sony’s PlayStation Portable. They look nice and are pretty intuitive, though it’s strange that there’s an option for the shooting menu in the home menu, but if you select it, it tells you to press the Menu button instead of just porting you over to that menu.

    Like a lot of superzooms, the H3 includes manual exposure controls, though there are only two apertures to choose from and these vary depending on the focal length you’re using at any given time. You won’t find aperture- or shutter-priority, but there are the usual array of scene modes, some of which are in the menu and some of which reside on the mode dial, as well as program and full auto shooting modes.

    Sony says that the H3 can output images and video to an HDTV if you buy the optional VMC-HD1 component video cable for about $40. However, since it’s not included with the camera and Sony didn’t send us one with the review sample, I can’t verify this, though I don’t really doubt them. This is a nice option, but I’d rather have seen an HDMI output on the camera instead of being forced to buy Sony’s cable. Either way, viewing images on HD has always been a better experience for me than using the regular standard-definition outputs found on most compact cameras.

    Except for a slow flash recycle time, the DSC-H3 performed well in our lab tests. The camera took 1.8 seconds to start up and capture its first JPEG, no doubt slowed a bit by the fact that the lens has to extend before you can shoot. It took 1.3 seconds between JPEGs with the flash disabled, jumping to 2.6 seconds between shots with the flash turned on. Shutter lag measured an impressive 0.4 second in our high-contrast test and 1 second in our low-contrast test, which mimic bright and dim shooting conditions, respectively. In burst mode, we were able to get an average of two frames per second, regardless of image size.

    Image quality from the H3 can be quite nice if you stick with ISOs 100 and 200, though that niceness is marred a bit by the lens’ noticeable distortion, as well as some purple fringing on high-contrast edges toward the edges of images. I saw more noise than I would’ve liked at ISO 400. While images are still very usable and much of the noise is minimized during printing, there is a noticeable falloff in shadow detail and fine detail at ISO 400. Stepping up to ISO 800, noise increases only slightly, but there’s more of a falloff in shadow and fine detail. At ISO 1,600 noise becomes heavy and most shadow and fine detail is lost. The top sensitivity setting of ISO 3,200 yields extremely noisy images with completely blocked up shadows and fine details. For example, text which was crisp and clear at ISO 200 and below, becomes completely illegible at ISO 3,200. I suggest staying below ISO 1,600 when shooting with the H3 and sticking with ISO 100 or ISO 200 whenever possible.

    If you want a long zoom lens in a camera that’s smaller, if not lighter, than most superzooms, Sony’s DSC-H3 is a decent choice. Since this is a new category, it’s hard to draw comparisons, but when Canon’s Powershot SX100 hits the market in October, we should be able to get a better idea of how this Sony compares with the competition.

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    How to prolong lithium-based batteries

    Sep 9

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    Battery research is focusing heavily on lithium chemistries, so much so that one could presume that all portable devices will be powered with lithium-ion batteries in the future. In many ways, lithium-ion is superior to nickel and lead-based chemistries and the applications for lithium-ion laptop batteries are growing as a result.

    Lithium-ion has not yet fully matured and is being improved continuously. New metal and chemical combinations are being tried every six months to increase energy density and prolong service life. The improvements in longevity after each change will not be known for a few years.

    A lithium-ion battery provides 300-500 discharge/charge cycles. The battery(latitude d830 battery) prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.

    Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as “digital memory”. Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery’s state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate. (Read more in ‘Choosing the right battery for portable computing’, Part Two.)

    Aging of lithium-ion is an issue that is often ignored. A lithium-ion battery(sony vgp-bps2c) in use typically lasts between 2-3 years. The capacity loss manifests itself in increased internal resistance caused by oxidation. Eventually, the cell resistance reaches a point where the pack can no longer deliver the stored energy although the vgp-bps2c battery may still have ample charge. For this reason, an aged battery can be kept longer in applications that draw low current as opposed to a function that demands heavy loads. Increasing internal resistance with cycle life and age is typical for cobalt-based lithium-ion, a system that is used for cell phones, cameras and laptops because of high energy density. The lower energy dense manganese-based lithium-ion, also known as spinel, maintains the internal resistance through its life but loses capacity due to chemical decompositions. Spinel is primarily used for power tools.

    The speed by which lithium-ion ages is governed by temperature and state-of-charge. Figure 1 illustrates the capacity loss as a function of these two parameters.

    Figure 1: Permanent capacity loss of lithium-ion as a function of temperature and charge level.
    High charge levels and elevated temperatures hasten permanent capacity loss. Improvements in chemistry have increased the storage performance of lithium-ion batteries(dell latitude d830 battery).

    The mentioning of limited service life on lithium-ion has caused concern in the battery industry and I will need to add some clarifications. Let me explain:

    If someone asks how long we humans live, we would soon find out that the longevity varies according to life style and living conditions that exist in different countries. Similar conditions exist with the batteries(xps m1330 battery,xps m1730 battery), lithium-ion in particular. Since BatteryUniversity bases its information on the feedback from users as opposed to scientific information derived from a research lab, longevity results may differ from manufacturer’ specifications. Let’s briefly look at the various living conditions of the lithium-ion battery.

    The worst condition is keeping a fully charged battery at elevated temperatures, which is the case with running laptop batteries. If used on main power, the battery inside a laptop will only last for 12-18 months. I must hasten to explain that the pack does not die suddenly but begins with reduced run-times.

    The voltage level to which the cells are charged also plays an important role to longevity. For safety reasons, most lithium-ion cannot exceed 4.20 volts per cell. While a higher voltage boosts capacity, the disadvantage is lower cycle life. Figure 2 shows the cycle life as a function of charge voltage.

    Figure 2: Effects on cycle life at different float charge levels (Choi et al., 2002)
    Higher charge voltages boost capacity but lower cycle life.

    There are no remedies to restore lithium-ion once worn out. A momentary improvement in performance is noticeable when heating up the battery,dell latitude d830 battery. This lowers the internal resistance momentarily but the condition reverts back to its former state when the temperature drops. Cold temperature will increase the internal resistance.

    If possible, store the battery in a cool place at about a 40% state-of-charge. Some reserve charge is needed to keep the battery and its protection circuit operational during prolonged storage. Avoid keeping the battery at full charge and high temperature. This is the case when placing a cell phone or spare battery in a hot car. Running a laptop computer on the mains has a similar temperature problem. While the battery is kept fully charged, the inside temperature during operation rises to 45°C (113°F).

    Removing the battery from the laptop when running on fixed power protects the dell d830 battery from heat. With the concern of the battery overheating and causing fire, a spokesperson for the U.S. Consumer Product Safety Commission advises to eject the battery of affected laptops and to run the machines on a power cord. It should be noted that on a power outage, unsaved works will be lost.
    The question is often asked, should the laptop be disconnected from the main when not in use? Under normal circumstances, it should not matter with lithium-ion. Once the battery is fully charged, no further charge is applied. However, there is always the concern is malfunction of the AC adapter, the laptop or the battery.

    A large number of lithium-ion batteries for cell phones are being discarded under the warranty return policy. Some failed batteries are sent to service centers or the manufacturer, where they are refurbished. Studies show that 80%-90% of the returned batteries can be repaired and returned to service.

    Some lithium-ion batteries fail due to excessive low discharge. If discharged below 2.5 volts per cell, the internal safety circuit opens and the battery appears dead. A charge with the original charger is no longer possible. Some battery analyzers (Cadex) feature a boost function that reactivates the protection circuit of a failed battery and enables a recharge. However, if the cell voltage has fallen below 1.5V/cell and has remained in that state for a few months, a recharge should be avoided because of safety concerns. To prevent failure, never store the latitude d830 battery fully discharged. Apply some charge before storage, and then charge fully before use.

    All personal computers (and some other electronic devices) contain a battery for memory back up. This battery is commonly a small non-rechargeable lithium cell, which provides a small current when the device is turned off. The PC uses the battery to retain certain information when the power is off. These are the BIOS settings, current date and time, as well as resource assignment for Plug and Play systems. Storage does shorten the service life of the backup battery to a few years. Some say 1-2 years. By keeping the computer connected to the main, albeit turned off, a battery on the PC motherboards should be good for 5-7 years. A PC should give the advanced warning when battery gets low. A dead back-up battery will wipe out the volatile memory and erase certain settings. After battery is replaced, the PC should again be operational.

    Longevity of high-power lithium-ion

    Generally speaking, batteries live longer if treated in a gentle manner. High charge voltages, excessive charge rate and extreme load conditions will have a negative effect and shorten the battery life. This also applies to high current rate lithium-ion batteries.

    Not only is it better to charge lithium-ion battery at a slower charge rate, high discharge rates also contribute the extra wear and tear. Figure 3 shows the cycle life as a function of charge and discharge rates. Observe the good laboratory performance if the battery is charged and discharged at 1C. (A 0.5C charge and discharge would further improve this rating.)

    Figure 3: Longevity of lithium-ion as a function of charge and discharge rates.

    A moderate charge and discharge puts less stress on the battery, resulting in a longer cycle life.

    Battery experts agree that the life of lithium-ion depends on other factors than charge and discharge rates. Even though incremental improvements can be achieved with careful use of the battery,dell inspiron b120 battery. our environment and the services required are not always conducive to achieve optimal battery life. The longevity of a battery is often a direct result of the environmental stresses applied.

    Simple Guidelines

    Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based inspiron b130 batteries.) Short battery life in a laptop is mainly cause by heat rather than charge / discharge patterns.

    Batteries with fuel gauge (laptops) should be calibrated by applying a deliberate full discharge once every 30 charges. Running the pack down in the equipment does this. If ignored, the fuel gauge will become increasingly less accurate and in some cases cut off the device prematurely.

    Keep the lithium-ion battery cool. Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.

    Consider removing the battery from a laptop when running on fixed power. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery casing.)

    Avoid purchasing spare lithium-ion batteries for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.

    If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the battery. For best results, store the battery at 40% state-of-charge.

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    What is the battery explode?

    Sep 9

    Posted by admin in Uncategorized | Comments off

    What is the battery explode? What is the reason? How to prevent the battery explode?

    The battery inside the moment any part of the solid material discharged from the laptop batteries were pushed up to more than 25cm distance, called the explosion. Determine whether or not the battery explosion, using the following experimental conditions: The one network covering the experimental battery, the battery(sony vgp-bps2c,vgp-bps2a) lives in the middle, away from the net on either side of the hood 25cm. Net density of 6-7 roots / cm, network cable with a diameter of 0.25mm soft aluminum, if the experiment without solid part through the network mask to prove that the battery did not explode. the battery cause of the blast is generally:

  • 1, safety valve designed to unreasonable not achieve security role.
  • 2, charging the battery internal pressure is too high.
  • 3, the battery has problems, such as: N / P ratio unreasonable; we should not hear a battery will explode on the battery lead to fear. In fact, as long as you use of products (including batteries and chargers) are qualified products, such problems would not exist.

    • Before the qualified products have undergone rigorous factory testing, and the batteries and chargers have a charge and discharge protection device inside, even if the battery or charger including a loss of protection performance, another one also can also protect your battery will not overcharge, there will be no charge explosion occurred phenomenon. Even if the battery(vgp-bps2c ,vgp-bps5a) and charger protection devices are ineffective, if you notice the battery is very hot, stop charging and sent to the Professional Inspection will avoid this phenomenon.

    User discussion about the battery cause of the blast order: a saying:

  • 1, may be your good seal, chemical reacted strongly. There is no safe gas out, it may fried.
  • 2, burr and dust caused by micro-short-circuit , is not the issue charger.
  • 4, is not equipped with anti-overcurrent (short circuit) using ptc.
  • 5, should be the battery did not control the production process is good, leading to charging and the film swelling caused by short circuit.
  • 6, batteries and chargers could be poor contact, resulting in excessive charge-discharge protection charger inside sampling (data) abnormal. Personal guess being exposed is the leading cause of the explosion!
  • 7, the ambient temperature to be considered when you are likely to charge the battery temperature, particularly in places like India, the battery and heat dissipation between the negative lead to the battery charger or charger to heat, the sony battery if the internal defect is likely to lead to internal short-circuit evolved into a fire explosion, if the charger is not good, high temperature may also lead to overcharge protection failure (provided that the internal battery overcharge protection circuit protection is also null and void), is not strange if an explosion?
  • 8, may be protected as board voltage problem. . . . . .

    • Another way of saying:

  • 1, in fact the battery cause of the explosion, no analysis of several companies to get out, most of the batteries(gd761,kd476) plant is nonsense, to find themselves and their clients in line with acceptable reasons, already.
  • 2, could not find a better reason, remember to write the report must Mody insisted the explosion was an accident upstairs the right is the correct path!!!!
  • 3, if there is an explosion in the discussion here, can clear, I am afraid no one can do the battery has. Lithium is now the biggest flaw that? Bang – difficulty,!
  • 4, the capacity of vgp-bps2c battery is still not too much to prevent the explosion turned into offensive weapons.

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    How to Change Your Laptop Battery

    Sep 4

    Posted by admin in battery info | Comments off

    In 1800, Alessandro Volta created the first battery. He created a battery known as a voltaic pile, by making a stack of alternating layers of zinc, blotting paper that was soaked in salt water, and silver. Amazingly, by attaching a wire to the top and the bottom of the pile, a voltage and a current could be measured from the pile. In fact, the Daniel cell is also known as the crowfoot cell, the gravity cell and the wet cell.

    In many devices that use batteries, such as portable radios and digital cameras, the batteries are normally grouped together serially to form higher voltages. Moreover, the voltages add up, when grouped in a serial arrangement; the currents add up, when grouped in a parallel arrangement. In the near future, laptop batteries will become smaller, much more powerful and a lot longer lasting to keep up with the technology of the electronics industry and its portable devices. Without a doubt, the creation of the battery is one the most remarkable inventions of the 20th century.

    Step 2 On the other hand, with the increase in portable devices, such as laptops, smart phones, iPods and cordless telephones, the need for rechargeable batteries are in great demand in society today. The world’s first rechargeable laptop battery cell was created from the lead acid cell by Gaston Plante, a physicist, in the year 1859. Moreover, the rechargeable rate has continued to improve over the years as follows: Category 1 Slow: 14 to 16 hours, Category 2 Quick: 3 to 6 hours and Category 3 Fast: less than 1 hour.(Dell GD761 ,KD476)

    Step 3 Conclusively, laptops run on electricity. It has a small inspiron E1505 battery to maintain the real-time clock and another component sometimes. Remarkably, since a laptop is portable, it can run on batteries alone. In addition,­ LiIon batteries are the current standard for laptops. These are light and they have long life spans; they can be charged at random and will not overheat if overcharged. So, LiIon batteries can last from about 950 up to 1200 charges. Many laptop computers with Li-Ion batteries claim to have a 5-hour GD761 battery life; this measurement can vary greatly and is dependent on how the laptop computer is used by the user. Many laptop computers have power management software to help extend the battery life or to conserve battery power when the battery becomes low. Even more so, when the battery life of the laptop has diminished, then its time to replace the battery. Turn the laptop computer’s power off completely; use a screw-driver to open the dell inspiron E1505 battery casing; remove the old battery and replace it with the new battery for the specified laptop computer model; put the battery casing back on; replace the screws and power the laptop back up. All done!

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    Sony Laptops Reviews

    Sep 3

    Posted by admin in battery info | Comments off

    Sony laptops almost appeared from nowhere and now seem to be the essential choice in mobile computing. If you think that I am exaggerating, just keep reading this article and see for yourself how these notebooks will rock your world.

    Without further ado, let’s explore the wonderful world of Sony Vaio laptops. To render the experience more pleasant, please use the summary box below for easy reading.

    Sony Vaio laptops — GRS series reviews & comparisons

    These medium screened Sony Vaio laptop computers, 15.0″ XGA (1024×768), are another recommendation for those who want their notebooks to be powerful enough to handle their tasks yet be portable. The Sony laptops GRS range is powered by the Pentium 4 1.8GHz-M processor or Celeron 1.7GHz.Classic sony battery–sony vgp-bps2c ,vgp-bps2a. They also allow you to burn and play CDs and watch your favorite DVDs. You’ll also find features such as 512MB or 256MB of RAM, 30 to 40 GB of hard drive space, CD-RW/DVD-ROM combo and weighs 6.9lbs (3.13 Kg).
    The Sony Vaio notebook GRS series is comprised of 4 models: Pentium 4-M with WLAN (Wireless LAN), Pentium 4-M without WLAN, PCG-GRS150 and finally the GRS150 (CTO).

    Sony Vaio laptops — GRZ reviews & comparisons

    This Sony laptop serial is the compromise between a desktop replacement and a standard laptop. Sorry for the lack of a better descriptive word, but like the Run DMC song goes “It’s like that and that’s the way it is… Huh!”. Seriously now… the reason behind the above comment are the specs behind the PCG-GRZ530, the only GRZ Serial model.

    Intel Pentium 4 processor 2.4GHz which is pretty powerful • a slightly above average 15.0″ XGA (1024×768) TFT display • a generous amount of RAM though (512 MB) • 30 GB hard drive • an internal but removable CD-RW/DVD combo drive • 6.9 lbs. (3.13 Kg) with just 1 battery, 7.5 lbs. (3.40 Kg) with battery (vgp-bps2c, vgp-bps2a , vgpb-ps5a )+ optical drive which is quite above standard laptops but way below “serious” desktop replacement. I would recommend these Sony laptops for those who prefer “normal” laptops and a little more or those that want to settle a smaller desktop alternative.

    Sony Vaio laptops — R505 SuperSlim Pro review

    If you are like me, you have to agree that most notebook computers’ dock stations are huge, cumbersome and impractical which defeats the whole purpose of mobility. That’s until you get yourself the R505 SuperSlim Pro Sony laptops. With or without the docking station it will never cease to be stylish.

    What makes this Sony laptop great besides the docking station (that house the CDRW/DVD combo drive and floppy drive by the way)? You’ll find the usual top-notch features that Sony is known for such as 12.1″ XGA LCD screen • Pentium III 1.20 GHz-M processor • 256MB SDRAM or 512MB SDRAM • 30 GB, 40 GB, or 60 GB hard drive • 1.16″-1.33″ X 11.0″ X 9.4″ • Size: 4.37 lbs. (2 Kg) with battery(sony vgp-bps2c) or 6.75 lbs. (3.06 Kg) with the docking station.

    Conclusion

    Please note that the above article was only a simple shopper’s guide of Sony Vaios. The features mentioned are only what makes them different from other Sony laptops . To view the full specifications and even do a little bit of laptop comparisons, please check these recommended sites.

    I will vouch for a Sony laptop anytime as person who’s owned Sony manufactured products(vgp-bps2a ,vgp-bps2c) for decades and who has heard and read many Sony notebooks users’ no less than pleasant experiences. If you’re ready to shop simply check out the section below that contains a mini-directory of recommended Sony laptops resellers.

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    New virus-built battery could power cars

    Sep 1

    Posted by admin in battery info | Comments off

    New virus-built battery could power cars, electronic devices

    For the first time, MIT researchers have shown they can genetically engineer viruses to build both the positively and negatively charged ends of a lithium-ion battery.

    The new virus-produced batteries have the same energy capacity and power performance as state-of-the-art rechargeable laptop batteries being considered to power plug-in hybrid cars, and they could also be used to power a range of personal electronic devices, said Angela Belcher, the MIT materials scientist who led the research team.

    The new batteries, described in the April 2 online edition of Science, could be manufactured with a cheap and environmentally benign process: The synthesis takes place at and below room temperature and requires no harmful organic solvents, and the materials that go into the battery are non-toxic.

    In a traditional lithium-ion battery,such as sony vgp-bps2c ,vgp-bps2a , vgp-bps5a battery, lithium ions flow between a negatively charged anode, usually graphite, and the positively charged cathode, usually cobalt oxide or lithium iron phosphate. Three years ago, an MIT team led by Belcher reported that it had engineered viruses that could build an anode by coating themselves with cobalt oxide and gold and self-assembling to form a nanowire.

    In the latest work, the team focused on building a highly powerful cathode to pair up with the anode, said Belcher, the Germeshausen Professor of Materials Science and Engineering and Biological Engineering. Cathodes are more difficult to build than anodes because they must be highly conducting to be a fast electrode, however, most candidate materials for cathodes are highly insulating (non-conductive).

    To achieve that, the researchers, including MIT Professor Gerbrand Ceder of materials science and Associate Professor Michael Strano of chemical engineering, genetically engineered viruses that first coat themselves with iron phosphate, then grab hold of carbon nanotubes to create a network of highly conductive material.

    Because the viruses recognize and bind specifically to certain materials (carbon nanotubes in this case), each iron phosphate nanowire can be electrically “wired” to conducting carbon nanotube networks. Electrons can travel along the carbon nanotube networks, percolating throughout the electrodes to the iron phosphate and transferring energy in a very short time.

    The viruses are a common bacteriophage, which infect bacteria but are harmless to humans.

    The team found that incorporating carbon nanotubes increases the cathode’s conductivity without adding too much weight to the battery. In lab tests, batteries with the new cathode material could be charged and discharged at least 100 times without losing any capacitance,that is more than traditional lithium-ion battery(gd761,kd476) That is fewer charge cycles than currently available lithium-ion batteries, but “we expect them to be able to go much longer,” Belcher said.

    The prototype is packaged as a typical coin cell battery, but the technology allows for the assembly of very lightweight, flexible and conformable batteries that can take the shape of their container.

    Last week, MIT President Susan Hockfield took the prototype battery to a press briefing at the White House where she and U.S. President Barack Obama spoke about the need for federal funding to advance new clean-energy technologies.

    Now that the researchers have demonstrated they can wire virus batteries at the nanoscale, they intend to pursue even better batteries using materials with higher voltage and capacitance, give vgp-bps2c ,vgp-bps2a a perfect life.such as manganese phosphate and nickel phosphate, said Belcher. Once that next generation is ready, the technology could go into commercial production, she said.

    Lead authors of the Science paper are Yun Jung Lee and Hyunjung Yi, graduate students in materials science and engineering. Other authors are Woo-Jae Kim, postdoctoral fellow in chemical engineering; Kisuk Kang, recent MIT PhD recipient in materials science and engineering; and Dong Soo Yun, research engineer in materials science and engineering.

    The research was funded by the Army Research Office Institute of the Institute of Collaborative Technologies, and the National Science Foundation through the Materials Research Science and Engineering Centers program.

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