Then check with third party sellers before purchasing your battery 

July 24 [Wed], 2013, 11:39
My laptop has been used for 2 years.The battery can last less than one hours. So I need to replace it. I want to buy a dell notebook battery and How to choose a Safe & Quality Dell Laptop Battery? One of my friend sharebright P500 his online shopping experience with you.

First of all, choose the right battery for your laptop model or part number, like Dell Latitude D630, etc. Looking for a Dell laptop battery is not an overwhelming task any more, even if you have an older laptop model. If you are unsure of what battery replacement you need, you can get support from registering to join the Dell support forums to ask questions.

When choosing a battery, the main quality that you need to consider is the amount of energy that can be stored in a battery. This is measured in Watt- Hours (Wh). For longer runtime per charge, choose a battery with a greater Wh rating. Higher Watt hours (Whr) on the same system under the same operating conditions will generally deliver longer battery run time.

For example, if you compare the same system, running the same applications, the 53Whr battery would provide approximately 65% more run time than the 32Whr battery. What's more, used under the same conditions, a lower capacity battery will wear out faster than a higher capacity battery because it has to be charged more often.
Then check with third party sellers before purchasing your battery. Computer stores sell various new and refurbished computer parts at deep discounts, such as Papatek.com, ebay, etc. In addition, Papatek is a creditable online store for Dell laptop batteries replacement. It has an agreeable return policy and 12 months warranties.

Once you have purchased the right battery for your Dell latop, then you will store the battery for better preserving the life of your battery. There are a few tips: first, do not store batteries for long periods plugged into or attached to any power source.

This includes AC adapters and laptop security carts plugged into an outlet. Second, Laptop batteries, including those stored in laptop systems, should maintain an Operational Storage Temperature of 0° to 35°C (32° to 95°F). Meanwhile, batteries may be stored in the laptop or outside of the laptop. Pay bright P505 attention to charge batteries before storing. The recommended charging time should not exceed 1 hour. Typically, this should charge the battery to between 80% and 100%.


(Some discharge will take place over time. Stored batteries are expected to discharge 10-15% over a four month period, for your information.) Contrary to last decades' batteries, modern lithium ion batteries do not need to be fully discharged to maintain health. All batteries wear with use and time. When you find the runtime is no longer satisfactory, it may be time to purchase a new Dell battery.

The laptop battery provides a fixed voltage to your computer 

July 24 [Wed], 2013, 11:34
Comparing various laptop batteries, you may wonder how to choose a good laptop with a good battery. And how to find the battery with the longest life available for your computer. That's need a practical way to contrast them side by side. However, there is an important measurement of WHr(watt-hours) that determines the amount of laptop battery charging. The more WHr, the longer the battery willbright Satellite P305 last between recharges. If your battery can produce one watt of power for 12 hours, then its rating is 12 WHr. Amp-Hours is another batteries' charging measurement. The difference between WHr and Amp-Hours is that the watt as a measurement of power and the Amp as a measure of current.

The laptop battery provides a fixed voltage to your computer, measuring charge in watt-hours or amp-hours are equally valid methods. For instance, if your battery lasts for 20 watt-hours and always provides 10 volts, then it is valid to state your battery's energy storage capacity as 2 amp-hours. Different batteries use different chemicals to store charges. Whether you're talking about the rechargeable or non-rechargeable variety, all batteries work on the same basic principle: They are essentially a canister of chemicals that produce electricity.

For battery life, how long a laptop with a fully charged battery is able to run typical productivity apps, such as Microsoft Office, McAfee VirusScan, Adobe Photoshop and so on. The longest-lasting notebook according to some reports is the Lenovo (IBM) ThinkPad X60s. When configured with the high-capacity battery, its 8 hours, 16 minutes of life can get you through an entire workday. A Fujitsu Q2010 configured with an extended battery can last 7 hours, 38 minutes. The Dell Inspiron E1405 ran for 7 hours, 21 minutes; the Panasonic ToughBook 74 lasted 7 hours, 18 minutes; and the Lenovo ThinkPad R60 went for 6 hours, 25 minutes on a charge. The inexpensive HP Compaq nc2400 also performed well, clocking out after a lengthy 6 hours, 6 minutes.

After you choosing a good laptop battery, you will take care to make your battery life longer. Your laptop battery should never be stored in an area that drops below 50?oF (10?oC) or rises above 95?oF (35?oC); this means that your laptop should not be left in the car or in a storage area that is not climate controlled. Also, for extended storage of six months or more, the laptop battery should be discharged to 50% capacity and removed from the computer; a battery stored for an extended period of time at full capacity may lose the ability to charge fully, while a battery stored in a fully bright P305D discharged state may never be able to charge again at all.

Modern laptop batteries tend to last three to five hours, depending on the power needs of the computer and the programs the user runs. Few things are as frustrating as when your laptop battery suddenly won't charge fully or stops holding its charge for as long; when this happens, you'll probably want to buy a replacement battery. PAPATEK.COM is your ideal choice.

The auto industry chose lead acid as the starter battery 

June 04 [Tue], 2013, 16:02
Considering the importance which the battery holds in modern life, improvements have been slow in coming when compared to the advancements made in microelectronics. Let us not point the finger at laid-back scientists A32-K52 brand newand engineers but realize the complexity encountered. As long as the battery relies on the electrochemical process, limitations will continue. These are low energy storage, slow charging, short service life and high cost per watt.

Each battery system offers distinct advantages but none provides a fully satisfactory solution. For many years, nickel-based batteries delivered reasonably good service, but this chemistry is being superseded with lithium-ion offering higher specific energy (capacity), lower self-discharge and no maintenance. Lead acid with its many warts and blemishes still holds a solid position and will continue to keep its lead as starter and deep-cycle battery. No other system can meet the price and robustness on bulk power.

Never has there been so much activity in battery research and the electric vehicle (EV) is the catalyst for this frenzy. Expectations are high and the media is quick to announce a new battery that promises long runtime, good durability and is environmental friendly. Indeed, some systems show good potential, but most are years away from becoming commercially viable. Many disappear without a trace of the passing.

Typical failings of new battery concepts are weak load capabilities and short cycle life. Even a lemon can be made into a battery. Just poke a copper coin and galvanized nail into the innards. The power is low, and 500 lemons can light a flashlight bulb. Using seawater as an electrolyte has also been tried. The sea would produce an endless supply of electricity, but the retrieved energy is only good to light a flashlight. Corrosion of the plates limits the useful service life and renders the seawater battery impracticable.
With the interest in battery developments at an all-time high, it is only fitting that we review old and up-and-coming systems. The chemistries listed below are placed in roughly the sequence of development. Many older batteries are being revised to offer longer lives, extended runtimes and better pricing.
Nickel-iron

After inventing nickel-cadmium in 1899, Sweden’s Waldemar Jungner tried to use iron instead of cadmium to save money, but poor charge efficiency and gassing prompted him to abandon the project without securing a patent. In 1901, Thomas Edison continued the development as an alternative to lead acid for the electric vehicles, claiming superior performance. He lost out when gasoline-powered cars took over and was deeply disappointed when the auto industry chose lead acid as the starter battery.

The nickel-iron battery (NiFe) uses an oxide-hydroxide cathode and an iron anode with potassium hydroxide electrolyte to produce a nominal cell voltage of 1.2V. NiFe is resilient to overcharge and over-discharge and can A32-K72 brand new last for more than 20 years in standby applications. Resistance to vibrations and high temperatures made NiFe the preferred battery for mining in Europe, and during World War II powered the German V-1 flying bomb and the V-2 rockets.

Other applications are railroad signaling, forklifts, and stationary applications. NiFe has a low specific energy of about 50Wh/kg, has poor low-temperature performance and exhibits high self-discharge of 20 to 40 percent a month. These disadvantages together with high manufacturing cost prompted the industry to stay faithful to lead acid.

The modern battery fuel gauge will no longer remain a fallacy 

June 04 [Tue], 2013, 15:58
Measuring state-of-charge by voltage is simple but it can be inaccurate and here is why. Batteries within a given chemistry have dissimilar architectures and deliver unique voltage profiles. Temperature also plays a role; heat raises the voltage, a cold ambient lowers it. This phenomenon applies to all chemistries in varying degrees. Furthermore, when disturbing the battery with a charge or discharge, the open A32-F52 brand newcircuit voltage no longer represents the true SoC reading and the battery will require a few hours of rest to regain equilibrium; battery manufacturers recommend 24 hours. While lead acid batteries have a gradual voltage drop on discharge, nickel- and lithium-based batteries tend to be flat and SoC estimation by voltage is difficult. Consumer products using the voltage-based fuel gauges limit the readout to show full charge, mid-range and low charge.

A more advanced method to measure SoC is coulomb counting. The theory that goes back 250 years when Charles-Augustin de Coulomb first established the “Coulomb Rule.” It works on the principle of measuring in and out flowing currents. Figure 2 illustrates the principle graphically.

Coulomb counting experiences errors as well. For example, if a battery was charged for one hour at one ampere, the same amount of energy should be available on discharge. This is not the case. Inefficiencies in charge acceptance, especially towards the end of charge, as well as losses during discharge and storage reduce the total energy delivered and skew the readings. The available energy is always less than what had been fed into the battery. For example, the energy cycle (charging and then discharging) of the Li-ion batteries in the Tesla Roadster is about 86% efficient.

As with any numeric integration technique, coulomb counting accumulates error over time, which the modern fuel gauge tries to correct using voltage curves. Since these voltage curves harbor inaccuracies themselves, especially as the battery ages, the accuracy will continue to degrade over time.

The Adaptive System on Diffusion (ASOD) by Cadex features a unique “Learn” function that adjusts to battery aging and achieves a capacity estimation of +/-2% across 1,000 battery cycles, the typical life span of a battery. The SoC estimation is within +/-5%, independent of age and polarization. ASOD does not require outside parameters; it is self-learning. When replacing the battery, the learned matrix will gradually adapt to the new battery through use and achieve the previous high accuracy again.
Researchers are exploring new methods to measure battery SoC, and such an innovative technology is quantum magnetism (Q-Mag?). Q-Mag by Cadex does not rely on voltage or current flow but it looks at magnetism. The negative plate on a discharging lead acid battery changes from lead to lead sulfate, which has a different magnetic susceptibility than lead. A sensor based on a quantum mechanical process reads the magnetic field through a process called tunneling. Figure 3 compares the magnetic field response of a fully charged battery to one that is 20% charged. A low battery has a three-fold increase in magnetic susceptibility compared to one that is fully charged.

It is conceivable that a new technology has been found that can measure battery SoC with an accuracy that was not imaginable before. Knowing the precise intrinsic SoC enables improved chargers but more importantly, the technology provides battery diagnostics, including capacity estimation and end-of-life prediction. The immediate benefit, however, lies in building a better and more accurate fuel gauge.

Li-ion, including lithium iron phosphate, has a very flat discharge curve. Figure 4 shows a linear drop of the relative magnetic field units on discharge and a corresponding raise on charge when monitored with Q-Mag. There is no rubber-band effect associated with the voltage method in which discharge lowers the voltage and charge raises it. Q-Mag takes readings while the battery is being charged or is under load. The SoC accuracy with Li-ion is +/-5%, lead acid is +/-7%; calibration occurs by applying a full charge. The excitation current is less than 1mA, and the system is immune to most interference. Q-Mag works with cells encased in foil, aluminum, stainless steel, but not ferrous metals. The tests are conducted in the laboratories of Cadex Electronics Inc.

SoC measurements consist of several readings, and the most common ones are voltage, current and coulomb counting. While the accuracy of these systems is good enough for consumer products where a false indication only causes mild annoyance, medical and military devices, as well as the electric vehicle A32-F82 brand newdemand more. A stranded motorist with a mistaken empty battery would attract more media attention than a dropped call of a dead cell phone or a computer screen going dark too soon.

Although noticeable improvements have been made in SoC accuracies, further advances are needed and innovative new technologies are promising. They will not only provide better SoC accuracies but offer state-of-health and end-of-life prediction. Scientists predict that these developments will be available at competitive prices. With these forward-looking technologies in mind, the modern battery fuel gauge will no longer remain a fallacy but become factual.

Save used batteries in containers 

April 16 [Tue], 2013, 10:46
With over 15 billion batteries sold in North America every year, we do not wish to be reminded of the ugly sight of that many Brand new Presario V6000 battery falling into landfills, to be buried with other trash. It makes more sense to

Use fewer batteries by recharging when possible, particularly in the case of ordinary alkaline batteries.
Save used batteries in containers, to be taken to nearby recycling depots.
Collect used batteries to take to hazardous material collection locations.
Pay attention to the proper disposal of the types that cause the most environmental damage: Nickel-cadmium batteries and lead-acid batteries.

Make use of plants specifically designed for the purpose to recycle metals and other materials used in batteries.

Lead-acid batteries used in automobiles and motorcycles are easy to identify by their size and weight and unique heavy metal terminal lugs. Lead-acid batteries are also found in burglar alarms, computer power supplies as sources of uninterrupted power during blackouts, and emergency lighting units. The Brand new L08O6D13are almost always properly labeled so you can determine what type of battery they are.

Nickel-cadmium batteries, on the other hand, are not always labeled as such. They are most often found in portable telephones in the home, in razors, in electric drills and power tools. When in doubt, treat the battery as hazardous and take it to a center capable of proper disposal.

For information on the growing markets for batteries  

April 16 [Tue], 2013, 10:45
Sales of primary and secondary batteries are expected to rise through 2010 to $73.6 billion. Gains in China will exceed any other national market because of healthy economic growth and industrialization efforts. China will Brand new Presario F500 surpass the U.S. to become the largest battery market in the world.

Sales increases for these and other countries are published in a study "World Batteries" The report, or sections of it, may be purchased from
The Freedonia Group, Cleveland OH .

The study also focuses on specialty rechargeable batteries such as lithium ion and lithium polymer batteries, with their growth rates outlined in the various countries.

The market demand for batteries in the U.S. will approach $15 billion in 2011

The US demand is forecast to increase 4.3 percent annually through 2011 to $14.9 billion. Cellular telephones and other devices that require increased performance with reduced battery size are pushing the mix toward more expensive battteries. These and other trends are presented in "US Batteries", a new study from the Freedonia Group, Inc., a Cleveland-based industry market research firm.

Battery materials

Another report covers the increasing demand for materials used in the production of batteries and fuel cells. The market for materialsBrand new Presario F500 will rise by an extimated 4.4 percent per year to $3.8 billion in 2011.

The title of the report is "Battery & Fuel Cell Materials" , also available from the Freedonia Group.

Batteries in China

Finally, for information on the growing markets for batteries in China, and the increase in battery manufacture in China, we recommend the report "Batteries in China".

A NiCad charger should never be used on alkaline batteries 

March 06 [Wed], 2013, 10:44
Alkaline batteries have long shelf lives and they do not suffer the 'memory effects' of Nickel-cadmium batteries. The term 'Memory effects' refers to the batteries becoming weaker with continued use, particularly when the Notebook batteries Pavilion Mini 311 have seen light use and do not respond well to further charging. The problem stems from low battery currents which flow from only a small part of the active anode area of the battery.

If higher current had been drawn or if the battery had been completely discharged, the whole active area of the anode would have been involved. The unused area essentially 'films over' and acts as a barrier to current flow. Further charging does not restore the active area.

Alkaline batteries do not self-discharge. This is a chemical change causing the electrodes to degenerate in Nickel-metal hydride and Nickel-cadmium batteries. It is reversible by charging and discharging several times. Batteries that are not recharged before use will not supply the full amount of stored energy. None of the above happens with common Alkaline batteries. The rate of self discharge in Nickel-cadmium is about 2% per week, in Nickel-metal hydride it is about 3% per week. At temperatures higher than room temperature, these rates increase.


What about alkaline batteries designed to be recharged?
Paradoxically, these higher-priced specialty batteries, known as RAM batteries, or Rechargeable Alkaline Manganese, are not rated highly in technical reports. Some trade magazines list them as rechargeable for only 25 to 30 times at the most. They are not satisfactory when used in high-drain applications such as digital cameras, as the voltage supplied by the battery drops low in response to high current demands. One battery sales representative referred to RAM batteries as being 'soft' batteries. (His company did not make RAM batteries at the time, and still does not.)


How difficult is it to recharge an ordinary alkaline battery?
Very difficult if you don't own the right type of equipment designed to do the job. We have been telling you of a safety-tested, dependable charger that has been around for years, and will remind you again at the end of this chapter. Using the wrong type of charger on alkaline batteries can be downright dangerous. Just read the warning labels printed on ordinary batteries. A NiCad charger should never be used on alkaline batteries. Such a charger would supply currents in excess of safe values, would not turn off automatically when battery voltage exceeds safe limits, and would continue unchecked until the battery was damaged.


How many times can an ordinary alkaline battery be recharged?
Would you believe hundreds of times? The trick is to stop using the battery well before it has given up all of its available stored energy. Note that this is directly opposite to the instructions that were packed with your battery-operated drill or screwdriver with its NiCad batteries. When the drill stops turning, charge the battery, but not before. Good rule for NiCads, but not for alkaline batteries.

Assuming you now have a charger to safely charge alkalines, don't wait for the battery to stop working. In order to achieve ten times extension of the normal life of an everyday alkaline battery, you will have to recharge it frequently, many more times than ten. It makes sense to use a second set of batteries for a high drain device. Take out one set of batteries when the device is not being used, and put Notebook batteries HSTNN-CB73in the second set that has been recharged. Charge the first set and carry it with you as a backup if necessary.

You will be surprised how easily children will be attracted to charging their own batteries in their toys and possessions. Managing their own batteries is fun, and they know it helps the environment by not having to throw batteries away when they can recycle them.

AGM batteries are sensitive to overcharging 

January 03 [Thu], 2013, 15:59
AGM is an improved lead acid battery with higher performance than the regular flooded type. Instead of submerging the plates into liquid electrolyte, the electrolyte is absorbed in a mat of fine glass fibers. This makes the lithium AS10B31spill-proof, allowing shipment without hazardous material restrictions. The plates can be made flat like the standard flooded lead acid and placed in a rectangular case, or wound into a conventional cylindrical cell.

AGM has very low internal resistance, is capable of delivering high currents and offers long service even if occasionally deep-cycled. AGM has a lower weight and provides better electrical reliability than the flooded lead acid type. It also stands up well to high and low temperatures and has a low self-discharge. Other advantages over regular lead acid are a better specific power rating (high load current) and faster charge times (up to five times faster). The negatives are slightly lower specific energy (capacity) and higher manufacturing costs.
AGM batteries are commonly built to size and are found in high-end vehicles to run power-hungry accessories such as heated seats, steering wheels, mirrors and windshield wipers. Starter batteries also power navigation systems, traction and stability control, as well as premium stereos. NASCAR and other auto racing leagues choose AGM products because they are vibration resistant. Start-stop batteries are almost exclusively AGM because the classic flooded type is not robust enough; repeated micro cycling would induce capacity fade.
AGM batteries are commonly


AGM is the preferred battery for upscale motorcycles. It reduces acid spilling in an accident, lowers weight for the same performance and can be installed odd angles. Because of good performance at cold temperatures, AGM batteries are also used for marine, motor home and robotic applications.

As with all gelled and sealed units, AGM batteries are sensitive to overcharging. These batteries can be charged to 2.40V/cell (and higher) without problem; however, the float charge should be reduced to between 2.25 and 2.30V/cell (summer temperatures may require lower voltages).

Automotive charging systems for flooded lead acid often have a fixed float voltage setting of 14.40V (2.40V/cell), and a direct replacement with a sealed unit could spell trouble by exposing the battery to undue overcharge on a long drive.

AGM and other gelled electrolyte batteries do not like heat and should be installed away from the engine compartment. Manufacturers recommend halting charge if the battery core reaches 49°C (120°F). While regular lead acid batteries need a topping charge every six months to prevent the buildup lithium UM09H36of sulfation, AGM batteries are less prone and can sit in storage for longer before a charge becomes necessary.

The following are important lead acid systems in limited use or under field test.

All this maintenance and the considerable expense of solar batteries  

November 13 [Tue], 2012, 11:56
Coat battery posts with battery sealer (available at auto parts stores) or petroleum jelly.
Promptly recharge partially drained batteries. Some watt-hour meters show the percentage of charge left in the battery (much like most laptop computers). A battery that is only drained to about 90 percent of its12 cells WW116 capacity will last more than 10 times longer than a battery that is regularly completely drained. With an off-grid PV system, keeping the battery consistently above 90 percent of capacity is unrealistic.

Instead, aim to retain at least 50 percent battery capacity at all times. This might mean running dishwashers and other appliances on sunny days when the batteries are full and you are drawing power directly from the solar panels.

Reduce electric usage during long cloudy periods. It may also be cost-effective in the long run to oversize the battery bank to minimize drainage.
Keep batteries at a comfortable temperature - between about 50 and 80 degrees Fahrenheit, and ideally around 75 degrees. Don't let batteries freeze, and keep them off cold concrete floors. If the batteries are kept in the home, they should be in a separate, sealed and well-ventilated space out of reach of children.

Check battery fluid levels monthly, and refill as needed with distilled water. Refill to the level specified by the manufacturer, and promptly clean off any battery acid that spills out of the battery. Battery filler bottles simplify the process and help prevent overfilling. Never wear metal jewelry or use non-insulated metal tools when working with batteries. They could conduct dangerous levels of electricity.

Use the charge controller to equalize the batteries quarterly or as needed. Equalization is a controlled overcharging of the cells, and can be done with the PV array on a sunny day or with a backup generator. The battery bank is overcharged for about four to six hours, until the voltage is equal between batteries.

Of course, all this maintenance and the considerable expense of solar batteries can be avoided with a battery-free system that is tied to the main electric grid. These cheaper systems feed power into the electric grid when possible, and draw power from the grid when necessary, and don't require battery backup. If you want a small battery bank in case of a power outage, consider sealed lead-acid 12 cells Inspiron 1420 battery, which do not require as much maintenance (and can't be filled or equalized). However, be sure to recharge them occasionally, as they slowly lose their charge. Also avoid freezing or extreme heat.

Much of the above information can be attributed to "Power from the Sun" by Dan Chiras, a thorough, accessible resource for all kinds of information about home solar electric systems, and "The New Solar Electric Home," by Joel Davidson and Fran Orner, which is a more difficult read, but it packs more detailed information.

EV battery technology is no different then computer technology 

November 13 [Tue], 2012, 11:55
he debate of whether the government should support emerging technologies has often lacked proper context. Many people are not aware, or simply forget, that government historically has supported emerging technologies to get them from the lab to commercial production. The LONG TERM benefits and high quality FK890payback of these investments far outweigh the initial funding.

EV battery technology is no different then computer technology that initially received support from the government. Computers initially had the same challenges from a price and practicality standpoint before reaching economies of scale and subsequently wider adoption.

As a free market proponent, there are certain strategic initiatives that I understand require the scale and legislative certainty from the government for the private sector to invest in and for the technologies to suceed. If we do not embrace the governments role in that regard (and, yes there will be set backs), we9cells Inspiron 1720 battery can watch battery and other emerging technology development shipped off to other parts of the world where their time horizons on ROI is not short as ours.

Ironically, that development will probably be supported by some International Investment fund with capital from individual and institutional investors from this country.