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Archive for July, 2009

How to prevent battery explosion

Jul 30

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Any part of the laptop battery within the instantaneous discharge of solid material, was pushed away from the battery to more than 25cm distance, called the explosion. Determine whether or not the battery explosion, using the following experimental conditions: a network of experimental hooded batteries, battery living in the middle, away from the net either side of cover for 25cm. Net density of 6-7 root / cm, a diameter of cable used 0.25mm soft aluminum, if the non-solid part of the experiment through the network mask to prove that the battery did not explode.

Battery explosion is generally

  • 1. safety valve design is unreasonable, will not achieve any security role.
  • 2. when the battery charge is too high internal pressure.
  • 3. the laptop battery has problems, such as: N / P ratio unreasonable; you will not hear a battery will explode, they have a fear of the battery. In fact, as long as you use the products (including batteries and chargers) is a qualified product, there would not have this problem.

    • Qualified products have been manufactured prior to the rigorous testing, and with batteries and chargers are red discharge protection device, so even if the battery or charger in which a loss of protection, another can also protect your battery will not have been sufficient, there will be no charge for the phenomenon of the explosion. even if the batteries and chargers are failure of the protection device, if you notice that the battery(dell gd761 , sony vgp-bps2c , vgp bps5a ) is hot, stop charging immediately and sent to professional inspection will prevent the occurrence of this phenomenon.

    Users to discuss on the battery explosion finishing: a statement

  • 1. the closure may be your very good, intense chemical reaction. There is no safe gas out, it may be fried.
  • 2. deburring and micro-short circuit caused by dust.
  • 3. the problem is the charger you?
  • 4. is not equipped with anti-overcurrent (short circuit) ptc used it.
  • 5. the battery should be no control of the production process, and lead to expansion of charging and cause a short circuit chip.
  • 6. may be bad batteries and charger, the charger lead to charge-off place which protect the sample (data) abnormal. Personal guess, bad is the cause of the explosion led to
  • 7. the ambient temperature to be considered, is likely to charge when the lenovo battery temperature, especially the kind of place in India, between the batteries and chargers poor thermal heating battery charger or the battery if the internal There are flaws in the internal short circuit is likely to lead to the gradual evolution of the explosion as the fire, if not the charger, the high temperature may also lead to over charge protection failure (provided that the internal battery overcharge protection circuit failure of protection).
  • 8. may be to protect the plate voltage up to a problem.

    • Another way of saying:

  • 1. in fact, the battery explosion, no analysis of several companies to come out, the majority of factory batteries are nonsense, to find themselves and their customers to comply with reasons to accept others.
  • 2. can not find a better reason, I remember that when you write the report insisted the explosion was an accident.
  • 3. if an explosion in here can clear the issue, I am afraid no one can do the battery. Lithium is now what is the biggest flaw?Good lithium iom battery, dell inspiron 6400 battery , powerbook G4 battery , inspiron e1705 battery , thinkpad t60 battery .
  • 4. the capacity of lithium batteries or not too much to prevent the explosion of offensive weapons into!

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    How to choose Better Sony VGP-BPS2C battery

    Jul 27

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    How to choose Sony VGP-BPS2C battery,How to select the correct battery pack (General Knowledge)?First of all, you must get to know your device: What is device’s input voltage? ( V) What is its power consumption ( Wattage ) ? What is Maximum current drain ( A) ? What is your expected running time by a battery pack ? Decide laptop battery pack voltage you will choose Battery pack voltage must be equal or a little higher than your devices need. If you need a exact voltage, which battery pack can not provide, you may consider to use a DC-DC regulator Decide Battery pack’s Capacity ( mAh or Ah) Battery capacity is depended on how long you need to run your device ( hours ), which can be calculated as the follow: ( Ah) = Device’s Wattage (W) x Time to run ( Hours) / Battery Voltage (V)

    For example, if using a 12V battery pack, and run 10W DC device for 10 hours, you need choose a battery pack with capacity > 8.3Ah, e.g

    Generally speaking, international brands of notebook battery products will be provided a battery-management tool in the CD-ROM, such as the ThinkPad’s Thinkpad Configuration, SONY’s PowerPanel. This is a tool we can use this software to read the intelligent control chip of battery,then,we can learn about the design capacity of the battery, the actual capacity, and the other information. However, these tools only used to the original laptop battery , I recommend using this software – BatteryMon, the parameters of the battery can be visualized to them. BatteryMon can read the information of the PCM board of battery, and due to the core for batteries, keeping the original circuit, it is still an original batteries BatteryMon “eyes”. In this regard, we can choose a battery from the capacity information, in general, the capacity of core for the actual battery is often not consistent with the design capacity. 2.Look at the Sony VGP-BPS2C appearance .

    When We buy notebook battery (such as purchase a Sony VGP-BPS2C from a online store)should to check carefully whether the battery’s shell is a good process, the edge of the battery is fine, the print is clearly or not. There was a clear distinction between genuine and the fake in details. If convenient, use BatteryMon to detect the battery manufacturer and part number. Here we proposed to bring your original battery when buy the replacement laptop battery , and compare with the original carefully.

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    Notebook battery maintenance on

    Jul 23

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    Notebook in the use of a longer period of time, prone to the problem of declining laptop battery capacity, resulting in shortened life of the notebook battery . This is mainly an internal battery caused by aging or failure. In serious condition, the use of battery calibration procedures or repeatedly charging and discharging the battery fails. For this issue, there are many fans that will open the battery case, the failure to find and replace batteries will be able to solve the problem. The actual situation is really so?

    Replacement batteries should be treated with caution

    Due to the current use of lithium-ion notebook batteries , and lithium-ion battery life is basically a constant, the charge life of only 500 ~ 800 times. Therefore, if the regular use of batteries for notebook power supply, 1 ~ 2 years later, due to the internal battery, it is easy to achieve the life of the batteries expire. Although we have detected in the open cell batteries, the show is a one or two damaged batteries. However, due to other batteries that is about it even if you replace the batteries of the failure, the battery back to normal in a short period of time, will soon result of the failure of other laptop batteries of the entire battery can not be used again.

    In that case, all the internal laptop battery can replace all solve the problem? In fact, this is difficult. Because in the original battery, its internal batteries is a precise match, and therefore the capacity of batteries, terminal voltage and internal resistance of a good consistency. And we are in the market to buy batteries, and has not been tested and matched, we can not be an amateur under the conditions of matching for the batteries, so the capacity, internal resistance and other parameters will inevitably vary. In the internal battery, the batteries are charged together after the series (in the majority of notebook batteries, the batteries will be divided into eight groups, four in series and then parallel to form a battery pack), as a result of the rechargeable battery the same current, in which the smallest capacity batteries will of course be full of electricity, while the other is not enough battery power, the battery terminal voltage can not set the voltage, charging circuit will continue to charge laptop battery pack . In this way, the original fully charged rechargeable batteries will be too. To reduce the charge time, laptop charging circuit of the charge current considerable, so too will charge batteries when the great heat, so that the liquid batteries temperature, pressure, internal electrolyte easily dry or overflow , resulting in a further decline in the capacity of batteries, and even expansion of the explosion there. The total storage capacity of the battery by one of the smallest capacity batteries that decision, and this will turn into a vicious cycle, after repeated charge-discharge, the entire battery capacity will significantly decline, resulting in the use of laptop time.

    At the same time, a number of laptop batteries in order to prevent unauthorized users to open the replacement of batteries, have the smart chip protection and anti-line openings. As long as the shell to open the battery or batteries from the battery in the circuit board removed, intelligent protection circuit will stop the output of the battery. Even if we put the batteries back to the battery circuit board or close the battery case, the protection of its smart chip still can not be restored. In this way, the laptop battery will not be able to normal output. We need to reset the smart chip in order to solve this problem, but the amateur conditions, we are unable to reset the smart chip. Therefore, from time to time Open batteries may cause permanent damage to the battery.

    So, how do we solve the laptop battery problem? The best way is to buy a new original battery, but now a new original battery or even a few thousand dollars, to spend so much money is too high, exceeding the carrying capacity of many consumers. However, there are a number of professional notebook repair station, its equipment and technology are good, but there are some repair stations and manufacturers of batteries there is a long-term cooperative relations, the battery can be manufactured to precise matching. This will ensure the maintenance of quality. In these places the price of batteries for about 300 million, although replacement of batteries on their own to higher prices, but will keep the battery’s long-term use. In addition, some maintenance stations for maintenance had also carried out a six-month battery warranty. And we use these six months, as long as there are a hundred times to ensure that the battery charge and discharge around, and laptop battery capacity and stability during this period, then after the battery will enter a stable period, the damage is not easy.

    Have know-how to maintain the battery

    In any case, replace the batteries do not need our small price to pay, so we have to use in day-to-day attention to the maintenance of the battery to extend battery life.

    To protect the battery, first of all to reduce the number of battery, that is to say when in the city, do not use the battery as much as possible. This can reduce the number of battery charge and discharge, longer battery life. While this caused some inconvenience to use, but every time you think about the use of batteries, need money to pay two dollars.

    The internal structure of the battery

    Battery calibration procedures can extend the battery life, has been a subject of heated discussion. Support the view that correction can eliminate the battery memory effect of batteries to extend battery life. The opponents believe that the use of lithium-ion batteries have no memory effect, so the correction process will only increase the number of battery charge and discharge and shorten battery life. In fact, understanding these two are not comprehensive. Although lithium-ion batteries to reduce the memory effect, but the memory effect still exists. Indeed the battery calibration can reduce the memory effect, but this is not the most important, the battery calibration procedure is to establish the main functions of the battery and control circuit so that the control circuit can correctly identify the capacity of the battery, so to avoid battery overcharge or over-discharge phenomenon. At the same time, the system can also be exhausted before the battery shutdown to protect data security. However, the frequent use of battery calibration procedures will increase the number of battery charge and discharge. Therefore, we run once every three months about the battery calibration procedures it.

    We in the use of batteries for notebook power supply or power adapter for charging the battery, do not unplug the notebook’s battery. Because the laptop battery is charging or discharging state, the currents are very large, if we try to plug the battery, then, it is easy to have a spark, not only will cause contact of ablation, may also be caused by the impact of current circuit board or battery laptop charging circuit damage.

    In addition, many people there are still some misunderstanding on the use of batteries. For example, the “new purchase to go through the battery charging and discharging several times to activate,” “notebook batteries do need to put a” matter of fact, with the memory effect of lithium batteries and battery to reduce the improvement of internal protection circuits. These factors impact on the laptop battery capacity has been very small, we run on a regular basis as long as the battery calibration procedure of these operations will be able to eliminate the impact of the battery, so we need not care too much for this purpose to wait on your notebook, after all, the battery is used used.

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    Discharge over the impact on battery performance

    Jul 23

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    End of internal storage laptop battery put the battery voltage reaches a certain value, continue to discharge will result in over-discharge, usually under the discharge current to determine the discharge cut-off voltage. 0.2C-2C General Settings discharge 1.0V / support, 3C, such as 5C or above 10C discharge is set to 0.8V / sticks, laptop battery cells could have been released have disastrous consequences, in particular over-current release, or have been repeatedly put a greater impact on the battery. In general, the lenovo battery will discharge over hypertension is reversible negative electrode active material damage, even if only part of the resumption of charging capacity will be significantly attenuated.

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    Laptop Battery Maintenance Errors

    Jul 21

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    Compatible charger can also use

    Notebook computer power consumption is much larger than cell phones, the most extreme circumstances, the power needs of laptop battery at the same time and meet the requirements of the machine is running full-speed power supply, laptop computers are generally not compatible charger.

    Because the various models of voltage, current, or even interfaces are different, can be common to a variety of notebook “compatible chargers are” likely to be of genuine more expensive than the charger, even if the same interface, if the voltage and current below the nominal value of machinery, machine working at full speed when the laptop battery may not be able to obtain sufficient charge current, which damage the replacement battery is a great one.

    If the voltage and current much lower than the nominal value, or even find that simply can not boot or boot is not able to charge, so choose the power to choose the best time and the same original, it can not be found, please pay attention to a certain voltage and current To qualify machine nominal value, with the plants of different products in general the same interface,sony vgp-bps2c ,dell gd761 , dell kd476 are a best replacement battery, but the voltage and current may be different, we must pay attention to this point!

    Laptop Battery

    The need to fully charged latpop battery (or put photovoltaic) to preserve

    Or whether it is full of light, they are actually incorrect, put long-term preservation of photoelectric batteries will lose their activity,my sony vgp-bps2c is a example. even lead to the control circuit protection self-locking and can not re-use, full of power will bring about long-term preservation of the security problems, the most the preservation of the ideal way is to discharge to about 40% and then save, lithium batteries fear humid and high temperature, it should be placed in a cool dry place to preserve, but the temperature not too low, otherwise the capacity will be greatly reduced, about 20 degrees Celsius is an ideal Storage Temperature.

    Battery dying, but also for its own batteries

    The laptop battery is a lot of people for such a deadly, manufacturers seem to expect someone to do so long ago, many brands of notebook battery design are self-locking function, once the batteries out of control circuit, the circuit enters a state of self-locking, Only the use of certain means in order to unlock, in this control circuit before will not work, that is equivalent to end-of-life batteries, notebook batteries batteries can not change the batteries, if you need to change batteries can not, please remember to find the specialized battery maintenance company to wield the sword, its own waste for just a small, kind of effort after the failure of the most frustrating and depressing worst.

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    Laptops Built For Gaming – Are They Worth the Price?

    Jul 15

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    There are special laptops out there, built for gaming. They feature big screens, high resolutions,powerful laptop battery , fancy video cards, and other nice things.

    Should you pay more for one of these models? That depends on the type of games you want to play.

    Before you buy a laptop, sit down and figure out what you’re going to do with it. If you want to play games, then make a list of the top 5 games you want to play.

    Let’s say you want to play World Of Warcraft. Go to Google, and search: World of Warcraft system requirements – this will take you to a website that tells you the type of computer you need to play the game.

    They recommend a dual-core processor, 1 to 2 GB of RAM, and a video card with 128 MB of Video RAM,6 cells laptop battery . They tell you exactly what you need to buy.

    Make a list of the system requirements for your top 5 games. Then write down those specifications on a piece of paper, and go shopping.

    If you need to buy a special gaming laptop with strong laptop battery and you can afford it, then buy one. If you don’t need one, then don’t buy one.

    Basically, the rule of thumb is: Don’t buy more than you need, but don’t buy less than you need either.

    If you’re buying a laptop to play games, then make sure that the laptop you buy will play the games you want to play.

    But, if you are buying a laptop to surf the Web and send emails, then you don’t need a fancy gaming laptop. Buy a more basic model.

    Article Source: http://EzineArticles.com/?expert=John_Harper

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    New Battery Technology Charges in Seconds

    Jul 12

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    For the successful takeover of alternative energy over conventional sources of energy we need a good laptop battery technology too for power storage. The devices we want to keep on using need to be recharged. And we all know that recharge takes hours whether it’s our mobiles or laptops. If the researchers from MIT has implemented the know-how of these lithium-ion batteries, successfully then our waiting hours for recharge will be over.

    This breakthrough can be achieved in two years. MIT scientists are hopeful that this laptop battery can recharge a device in seconds. Gerbrand Ceder, who is the professor of Materials Science and Engineering at the Massachusetts Institute of Technology (MIT), said, “If you can charge your phone in 30 seconds, that becomes a life changer.” He also explains, “It could change the way we think about technology like this: you would literally be able to charge up while you stand and wait.”

    This development can transform the power storage technology and can help hybrid cars or electric cars and give the necessary push to renewable energy. This expertise can reduce the weight and size of the batteries and our devices can be charged within few seconds.

    The researchers, from the Massachusetts Institute of Technology, have already made a small prototype cell that charges fully in 10 to 20 seconds, compared with six minutes for cells made in the standard way. The researchers are of the view that this technology will be available commercially within two to three years, because they are not using some new material. They have also nicknamed this technology as the “beltway battery”, after the orbital motorway in Washington DC. His lithium-ion laptop battery utilizes a bypass system that allows the lithium-ions to enter and leave the battery speedily. The scientists discovered that by coating particles of lithium iron phosphate in a glassy material called lithium pyrophosphate, ions behave differently. These ions can bypass the channels and move more quickly. As we are acquainted with the fact that rechargeable batteries store up and discharge energy as charged atoms, known as ions, from between two electrodes called the anode and the cathode. Their charge and discharge rate are restricted by the speed with which these ions move.

    If MIT scientists successfully complete this project for commercial use, we can charge electric car batteries in less than one hour. Till now recharging is one of the greatest hurdles for mass production of electric cars. Solar and wind energy generation can also be benefited with this breakthrough. This lithium-ion battery can be utilized for storage of excess energy.

    Sony took the lead in China to provide “green dam”

    Jul 10

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    With “green dam” of new computer software will not focus on a large scale in the market, Tuesday evening, the Ministry of industry and information technology to “A reporter asked,” published in the form of news, said that July 1 is only in the country to promote “green dam” the beginning of time, enterprise if the lack of preparation “, according to the actual situation may delay pre-installed.” Public Works Department for the latest position letter, PC manufacturers calm and cautious response yesterday, a number of PC manufacturers have indicated their concern about the policy will continue to follow-up progress, some manufacturers have begun to recognize “green dam” and “pre-installed”, but the way it seems reservations become “stored.”

    Lenovo Group in the Beijing Morning News reporters Cai Fang and Shi Biaoshi, the company still plans to implement pre-installed in accordance with the original “green dam”, in other words,lenovo laptop battery. “manufactured in the near future the new Lenovo computers will be stored through the hard disk or CD-ROM form of payment to provide users with ‘green dam’ software “, but Lenovo does not determine the pre-installed” green dam “time limit” after it to continue to provide, we will take into account the needs of the market and users to make a decision. ”

    In addition, from Taiwan’s Acer computer company also said that this issue will be seeking further clarification and to comply with any new requirements. Hewlett-Packard on the “green dam” to defer the installation of the original statement insisted that the company has been in information technology with the United States work closely with industry associations in order to obtain further information, at the same time monitoring the process.Acer battery lenovo battery) the only “sleeping” on the computer hard drive, Sony provided the installation instructions, plus a ” Disclaimer, “the effect that the problem has nothing to do with Sony, by the user to decide whether or not to install.

    At present, the implementation of “green dam” is actually the fastest of the Sony Corporation of Japan. It is reported that Sony sold in China have begun to laptop containing “green dam” software, but the program with Lenovo,(

    The computer stores on the “green dam” calm response to the emergence of yesterday is the “green dam” factory pre-installed computers in the new start date, but a rare occurrence in the market of the software pre-installed computers, and even some vendors not clear “green dam” the specific functions that use Norton, Rising antivirus software, etc. can be replaced. (laptop battery)

    “Green dam” software called “Green Dam – young escort”, and it has blocked pornographic content, filtering undesirable websites, see Internet records and other functions, a letter from the Department of Public Works this year, centralized purchasing, and then provided free of charge through the PC manufacturers to users. Internet software as a “green dam” means the promotion of large-scale caused widespread concern in society as a whole.

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