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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

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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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    Sony Laptops Reviews

    Sep 3

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    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

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    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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    4X The Lifespan Of Current Lithium Ion Batteries

    Aug 27

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    New Sony Rechargeable Battery Has 4X The Lifespan Of Current Lithium Ion Batteries

    Sony has announced a new type of lithium ion rechargeable laptop battery that combines high-power and long-life performance than traditional laptop battery, such as sony vgp-bps2c ,vgp-bps2a,vgp-bps5a battery , using olivine-type lithium iron phosphate as the cathode material. The Olivine-type lithium iron phosphate used in this new battery is a perfect cathode material due to its robust crystal structure and stable performance, even at high temperatures. These bateries have a high power density of 1800W/kg, and extended life span of approximately 2,000 charge-discharge cycles. What’s most surprising is that the battery will keep an 80% charge retention after those 2,000 charge-discharge cycles, which is very impressive.

    This new battery is also able to charge rapidly (99% in 30 minutes). It will first be supplied for use in power tools, then gradually make its way to consumer electronic electronic devices. With lithium ion secondary batteries able to deliver both compact size and high capacity, their usage continues to diversify and grow. This new battery delivers an extended life-span of over four-times existing rechargeable lithium ion batteries used in conventional electronic devices. By adding this high-power, long-life lithium ion rechargeable battery to its lineup than vgp-bps2c, Sony has certainly strengthened its battery business going forward.

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    New laptop battery review

    Aug 25

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    Battery is generally cylindrical in shape with two terminals, one positive electrode and one negative electrode that conduct electricity along with a substance called electrolyte, that works on the electrodes, chemically and help convert into electrical energy. lenovo Laptop Battery,There is a copper wire that connects the two electrodes. Materials that are used in batteries are carbon, alkaline, chlorine, lithium ion, lead, nickel, sodium, silicon, copper, etc.

    Batteries are classified into two- Dry cells and wet cells. The wet cell batteries are also termed storage thinkpad t60 battery , sony vgp-bps2c ,vgp-bps2a battery as they can be recharged as many times as possible. Batteries are also divided as rechargeable and non-rechargeable or disposable batteries. The second type is again termed as primary cells, used till the chemical that produce the electrical current supply is fully consumed, at whicah point the battery is not needed anymore. These types of batteries are used very commonly in ThinkPad Z61t,small and portable piece of equipments that drain low current.

    The other type is rechargeable or in other words secondary cells that can be “refueled” even after being completely consumed. For recharging, these batteries need some external help from devices as chargers or re-chargers.

    In the present world due to the development of science and technology almost everything (papers, plastics, b,thinkpad t60 battery,thinkpad x60s battery, aluminum, etc.) can be recycled without wasting it by just throwing it after use. Thus we see that recycling is a procedure by which waste products are recovered for reusing, which is also known as waste management.

    Laptop Battery recycling falls under electronic waste or e-waste. Here any discarded, broken or unwanted electrical or electronic equipments, ThinkPad Z60t,containing toxic materials are recycled for further use. Batteries like, nickel-cadmium, lead, lithium batteries are made to reuse as the chemicals present in them can cause harm to the environment if allowed to stay long in open air after being discarded by the users. Moreover batteries are regarded as the most expensive energy source and their production requires much valuable recourse, so they are recycled so as to restore those valuable materials gd761,kd476 from those old and used batteries through battery recyling.

    Cadmium is a heavy metal and can cause pollution if burned or cremated. To avoid lead pollution lead-aced batteries are processed. This program is considered to be highly successful. Lithium-ion can be very dangerous if exposed to high temperature or sunlight, it can ignite or explode.Therefore battery recycling is a must if we want to protect our environment.

    The Recycling Process:

    First of all, the batteries to be recycled are sorted according to chemistries such as nickel-cadmium,nickel-metal-hydride, lithium, alkaline etc. The combustible material, such as plastics and insulation, is then removed with a gas fired thermal oxidizer, which is the first step in the recycling process. Most recycling plants have scrubbers where the gases from the thermal oxidizer are neutralized to remove pollutants, producing clean, naked , dell inspiron e1505 battery , sony vgp-bps2c ,vgp-bps2a ,cells that contain precious metal content.

    The metal in the inspiron e1505 batteries are then heated to liquefy, after they have been hacked into little pieces. Black slag left by burned out non-metallic substances are scraped off with a slag arm, and the different alloys that settle according to weight are skimmed off. Some plants pour the liquid metals directly into (65 pounds) or ‘hogs’ (2000 pounds) without separating on site, ThinkPad X60 battery,which are then shipped to metal recovery plants to produce nickel, chromium and iron re-melt alloy for the manufacturing of other metal products.

    State and Federal Regulations in the United States:

    The Mercury-Containing and Rechargeable Battery Management Act was passed in 1996 by the U.S. Congress which requires regulated batteries such as Ni-CD batteries and sealed lead-acid batteries to:

  • 1. be easily removable from consumer products to make it easier to recover them for recycling
  • 2. include in the label the battery chemistry, the “three chasing arrows” symbol,dell KD476 and a phrase that instructs users to properly recycle or dispose the battery
  • 3. provide national uniformity in collection, storage, and transport
  • 4. phase out the use of certain mercury-containing batteries

    • By recycling batteries the environment is not being polluted nearly as much, many natural resources are saved due to the rechargeable laitude d830 battery also. There is a large variety of websites on the Internet with more quality information on recycling batteries.

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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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