Monday 14 june 2010 1 14 /06 /Jun /2010 10:47

Any person with the laptop I am afraid that have experienced the embarrassment of the power to find that, in fact, develop some good habits can be very effective books to extend battery life.

* Defragment the hard disk from time to time: hard work, the more smoothly, it also consumes less power. Regular clean-up disk fragmentation can easily do this. Of course, if you are using MacOSX, or Linux, then you can ignore this department, because they are on disk management and use of more scientific than Windows, very little debris.

* Dims your display: the vast majority were in support of laptop display brightness adjustment, and some models even adjust CPU frequency and cooling support systems. You can adjust them to the lowest level of tolerance, which is of great benefit to energy saving. (In WinXP, you can by default AC and battery of different configurations, so that books in the plug-in automatically switched through the Vista Mobility Center, it can set up multiple sets of books using the program to fully define the power use)

* Reduce background running programs: iTunes, desktop search, etc., these will increase the CPU load, reducing battery life. When you use the Acer batbl50l6 Battery,Acer aspire 5100 series Battery,Acer travelmate 4200 series Battery when turned off as much as possible all unnecessary programs.

* Unplug external devices: USB devices (including mouse), and WiFi will reduce battery life. When you do not have them when they unplug or turn off.

* Add more memory: More memory allows the use of physical memory to run programs, rather than using virtual memory. Virtual memory is stored in the hard disk, and both slow and expensive electricity. Of course, important to note that, plus the memory also will increase the power consumption, so you must first try to estimate roughly how much your memory, in principle, as much as possible not to use or less use of virtual memory.

* Use the hard disk, rather than use the DVD / CD: hard drives are a lot of power, but the CD / DVD drive is more costly electricity. However, when not in use, they spend almost no power. Therefore, when using the battery, or less, insofar as possible with the use of CD-ROM drive it, put the data on the disc made of mirror and use the virtual drive software to use, that is convenient and energy saving.

By yokio - Posted in: acer laptop battery
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Friday 5 february 2010 5 05 /02 /Feb /2010 07:23
Repair laptop batteries not just replace the battery and to the maintenance after the battery may not work, may be very bad performance. The problem is because the EEPROM chip inside the procedure. Program is stored inside the battery before you replace the information, which includes the Sony vgp-bps2c battery scrap of information. Smart Battery Workshop, can change the contents of memory inside, causing the battery to work like new.

Repairs to be very simple and does not require special knowledge and skills. Just need to EEPROM connected to the adapter, and then in software according to "Reset" button. All the necessary will be done automatically, and then you need to assemble a good battery, and then installed on notebook computers.

Smart Battery provides read-only data channels are in accordance with via the computer parallel port / smart battery bus adapter directly to the battery interface (57 data area). All markup codes are converted into our human language. Allow the user to restore Smart Battery EEPROM to its initial value (which will remove the battery inside the use of records of the past) In addition to manufacturers of information, including current system information. And you find a permanent error data (if the battery is locked it is necessary to unlock the ). so you can get one packaged in the new "new" batteries. These do not require any electronic-based. All work will be done automatically. Do not involve programming simply click on "Reset" button. Frequent Sony vgp-bps2a battery where you can read and write EEPROM chip inside the content. Directly from the EEPROM to store data. If you want to analyze the data only need to enter inside the "EEPROM Read / Write" (just the chip to support an effective).

Smart Battery Workshop software operating points:

Double-click the EEPROM file is in the SBW to view the contents of 16 hex.
Fragmented files on the 8bit checksum calculation algorithms.
Automatically add the file description: byte-swapping, bit exchange, byte-swapping function.
Add TI BQ2083 BQ2084 BQ2085 for a special password, password scanning
Sbw directly through the use of "EEPROM Read / Write" reads the EEPROM files, to understand the relevant data for the battery (full charge capacity and cycle number, date of production, control chips, the production factory name, cell name, battery materials).

Smart Battery Workshop cell analysis functions:

See charge, discharge cycles and battery alarm.
Can be no laptops, no duty to do the battery calibration work (less than 10 cycles).
Measurement alone, and battery internal resistance.
If you use a separate control panel for example, BQ2060, cell analysis can completely replace Cadex or UBA4, the completion of the Sony vgp-bps2b battery capacity detection sub -
Battery automatic loop detection instrument description aging

Smart Battery Workshop chips are currently supported:

BQ2040/24C01/01N
BQ2040/24C02/02M
BQ2060/24C01/01N
BQ2060/24C02/02M
BQ2063/24C01
BQ2063/24C02
BQ2092/24C01
M37515 / S29L220 (SL220)
PIC16C63A/24C01 (used in COMPAQ Armada M300, E500, M700, Evo and other models) do not support the Smart Battery System
M37516/AK6480A (80AF) (80AM) (80AR)
AS355D/S29L394A (SL394) (sony ThinkPad T20 .. 23)
AS358D/S29L394A (SL394)
AS372D/S29L394A (SL394) (sony ThinkPad R31 and other models)
M37516/S29L220 (SL220)
M37516/93C56 (Dell D600 D800 M500 and other models)
M37515/24C01/01M (sony ThinkPad 390, Acer (Acer) and other models)
M37516/24C01/01M (sony ThinkPad 390 and other models)
M37517/SL194 (Sumsung Samsung batteries, as well as other brands)
PS331/25LC040
PS334/25LC040
PS401 (includes internal FLASH ROM)
PS402 (includes internal FLASH ROM)
BQ2083 (includes internal FLASH ROM)
BQ2084 (includes internal FLASH ROM)
BQ2085 (includes internal FLASH ROM)
BQ8011/24C01/01N
Toshiba 24C046
* M37516 part of the firmware number, the software not support
The chips are almost all of the sony ThinkPad, DELL, Toshiba, HP and other notebook computer batteries.



By yokio
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Tuesday 26 january 2010 2 26 /01 /Jan /2010 07:57
the battery memory effect refers to the battery failure reversible, that is, after the battery failure can be re-back performance. Memory effect refers to the battery to withstand a long time after a particular work cycle, automatically keep this particular trend. This was first defined in the nickel-cadmium batteries, nickel-cadmium batteries of the bag there is no memory effect, sintering batteries have memory effect. Now, nickel metal hydride (commonly known as Ni-MH) batteries from the memory effect of the definition of constraints. Because modern nickel-cadmium Dell inspiron 1520 Battery technology has improved, the above-mentioned memory effect has been substantially reduced, while the other replaces the definition of a phenomenon, that is nickel-based batteries, "lattice" of, typically, two kinds of nickel-cadmium batteries are affected by this effect of the combined effect of the Ni-MH battery only by the "lattice" memory effect, but affected much more than nickel-cadmium batteries for small.
In practice, the elimination of memory effect means there are strict norms and an operation process. Improper operation would be counter-productive.

For nickel-cadmium batteries, regular maintenance is regular deep-discharge: use of every month (or 30 cycles) for a deep discharge (discharge to 1. 0v / per session, foreigners call it exercise), usually use is the best use of light off a battery or other means can be used to ease the formation of memory effect, but this is not exercise, because the equipment (such as mobile phones) will not use 1. 0v / per session before the shutdown, must be specialized equipment or line to complete this task, but fortunately a number of Ni-MH battery charger comes with this feature. For long-term no exercise of the nickel-cadmium  laptop batteries, because of the cumulative memory effect, can not restore the capacity for exercise, when you need a deeper discharge (foreigner said recondition), which is a very small current time on the battery discharge to 0. 4v each section of a process that requires specialized equipment. For the nickel-metal hydride batteries, exercise frequency to once every three months is probably an effective mitigation memory effect. Because the Ni-MH battery cycle life is far less than the nickel-cadmium batteries, with almost no recondition this method.

▲ Recommendation 1: Every time charge of battery discharge is not necessary, but also harmful, because the battery life cut short unnecessary.

▲ Recommendation 2: Use a resistor then the battery positive and negative conduct discharge is not desirable, the current can not control, easy to put off 0v, even lead to series battery battery polarity reversal.
2. Do need to activate the battery

The answer is need to activate the battery, but this is not the user to do. I visited the lithium-ion battery manufacturing plant, lithium-ion batteries at the factory prior to go through the following process:

Lithium-ion battery electrolyte impart SHELL --- ---- seal formation, that is, constant voltage charging, and then discharge, so for a few cycles, so that the full infiltration of the electrolyte electrode fully activated in order to meet the requirements of capacity so far, this is the activation --- sub-capacity process, is to test the capacity of the Dell inspiron 1520 Battery select a different performance (capacity) batteries are classified, dividing the battery level, capacity matching. This lithium-ion battery out of the hands of the user is already activated off of.

We all commonly used nickel-cadmium batteries and nickel-metal hydride battery is activated only after the case into the factory. Some of these processes require the activation of the battery cell in the open state, re-activated after sealing, this process may have only batteries manufacturer to complete.

There is a problem that the battery factory battery factory to the user's hands, this time is sometimes very long, a short while a month, or as long as six months, this time, because the battery electrode materials will be passive, so the initial use of manufacturer's suggested the battery is best for 3 to 5 times full charge-discharge process in order to eliminate electrode materials passivation, to reach maximum capacity.

Promulgated in 2001, three on the nickel-metal hydride. Nickel-cadmium and lithium-ion batteries GB, its initial capacity of the testing are clearly defined, can be five times the battery charge deep deep release, when there are time consistent with the provisions of the test can be stopped.
This is a very good explanation of this phenomenon I am talking about.

★ So called "second to activate" is also possible, the user first use of the "new" batteries try to make several deep charge-discharge cycles.

● However, it was my test (for lithium-ion battery), storage period of 1 to 3 months within the lithium-ion battery, charging it to conduct deep-deep-discharge cycle of treatment, their capacity is almost non-existent. (I am in the thematic discussion forum on the battery to activate the test report)

3. The first three secondary charge 12 hours do

The problem is closely linked to the battery to activate the above problems, is tentatively set up a battery factory to the user's hand electrode passivation phenomenon, in order to activate the battery charge deep deep-discharge cycle 3 times. In fact, this issue into a deep charge is not is to charge a 12-hour problem. Then I get a piece of the article "On the cell phone battery charging time" has answered this question.

★ ★ ★ The answer is no charge 12 hours.

Early mobile phone Ni-MH battery because of the need to supplement and trickle charging process, to achieve the most perfect state of charge saturation may take 5 hours or so, but also one does not require 12 hours. The lithium-ion battery constant current constant voltage charging characteristic is determined that it would not need the deep recharge time 12 hours.

For the lithium-ion batteries Some people may ask, since the constant voltage phase of the current lithium-ion battery decreases, is not infinitely small when the current is small when the charge is the real deep. I have constant pressure phase current decreases to draw the curve of time, it conducted a number of curve fitting, found that the curve can be 1 / x function of ways to approach and zero current, the actual test because of inherent weaknesses in lithium-ion battery self-discharge phenomenon, the zero-current is never arrive. To 600mah battery, for example, set up current of 0. 01c (ie 6ma), it 1c charging time of less than 150 minutes, then set up current of 0. 001c (ie 0. 6ma), its charge time may be 10 hours --- this is because the accuracy of instrument problems, can no longer be accurate, but from 0. 01c to 0. 001c were calculated capacity of only 1. 7mah, a multi-use more than seven hours in exchange for it is only in 1000 Less than three-quarters of the capacity is of no practical significance.

Moreover, there are other charging methods, such as pulse charging way for lithium-ion  laptop battery to achieve 4. 2v limit voltage, it has no cut-off to determine the minimum current stage, generally after 150 minutes it is 100% charge full. Many mobile phones are the way with the pulse charge.

Some people have been charge with the phone displays full, re-use Charger to recharge the rechargeable cell phone to confirm the extent of saturation, the less stringent testing methods.

First Charger displays a green light is not a true test of whether a sufficient basis for saturation.

★ ★ testing lithium-ion battery charging and eat it or not the only ultimate solution is to test, without charge (not discharge) state of the lithium-ion battery voltage.

The so-called constant pressure phase current decreases its real aim is to gradually reduce the resistance on the battery charge current generated by the additional voltage, when the current is as small as 0. 01c, for example 6ma, this current is multiplied with the Dell inspiron 1520 battery internal resistance (typically in the within 200 milli-Europe) is only 1mv, that when the voltage is no current state of the battery voltage.

Second, the phone does not necessarily mean the reference voltage of the reference voltage Charger, cell phone batteries that charge fed to the Charger, the Charger is not considered to have sufficient saturated, but continue to charge.

4. Rechargeable batteries do best

There is a saying that is, rechargeable batteries used properly, will appear in a certain range of a cycle the best state, is the largest capacity. This should be sub-situation, sealed nickel-metal hydride batteries and nickel-cadmium batteries, if used properly (such as regular maintenance to prevent the memory effect of the generation and cumulative), generally from 100 to 200 cycles at the maximum value reached its capacity, such as the factory capacity 1000mah Ni-MH battery with 120 cycles, its capacity could reach 1100mah. Almost all Japanese Ni-MH battery manufacturer's technical specifications book describes the cycle characteristics of nickel-based batteries of the map I can see such a description.

★ nickel-based batteries have the best state, is generally between 100 to 200 cycles to reach its maximum capacity for the liquid lithium-ion batteries, but there is no such a cycle capacity hump phenomenon, from the lithium-ion battery factory to the final until the battery scrap , the performance of its capacity is to use a little time. I have done in the cycle performance of lithium-ion batteries, when there has never seen signs of recovery capacity.

★ lithium-ion battery is not the best condition.

It is worth mentioning that the lithium-ion battery more susceptible to environmental temperature changes in the performance of different properties, in the 25 ~ 40 degrees ambient temperature will show their best performance, while the low temperature or high temperature condition, his performance is significantly impaired the . To get your lithium-ion batteries fully demonstrated its capacity, must be careful attention to the use of the environment, to prevent the high and low temperature phenomena, such as mobile phone on the car before the stage, direct sun at noon is very easy to make it more than 60 degrees, the North The battery standby time of users, the same network circumstances, there is no longer the South of users.

5. Is really the greater the charge current, charge sooner do

\ "On the cell phone battery charging time \" a paper has been talked about this issue, for the constant current charging of nickel-based batteries, so to speak, while the corresponding lithium-ion battery, this is not entirely correct.

★ ★ For the lithium-ion battery charging, to a certain current range (1. 5c ~ 0. 5c), raising the constant current constant current constant voltage charging current value and does not shorten the rechargeable lithium-ion battery saturation time.

6. Direct charge on the subject of the output current is equal to the charge current do

It is necessary to discuss the phone's charging method, and charge management for mobile phones inside, set the same a direct charge (actually should be called the power adapter) output, such as: 5. 3v 600ma

a. Charge management is the switch mode (high-frequency pulse-width adjustment pwm mode), this charging method, cell phones do not take full advantage of direct charge of the output capability, direct charge work in the constant voltage section, the output 5. 3v, this time a real charge current from the cell phone charge management to adjust, but will certainly be less than 600ma, generally 300 ~ 400ma. This time, we see the direct charge of the output current is not cell phone charge current. Example motorola Many direct charge of its output 5. 0v 1a, a real Dell 1520 Batterybattery charging also used a 500ma be sufficient, because the phone's battery capacity is also, however 580mah.

★ At this time the subject of direct charge on the output current is not equal to the actual charge current

b. Pulse mode charge management, this charging method, cell phone take full advantage of the direct charge limiting current, is to use a 600ma battery, this time, direct charge of the output current is the charge current of. Of course, the above are defined as the constant current phase of lithium-ion batteries or Ni-MH battery charging purposes.

If the phone does not charge management to charge the management of a direct charge on the move, such as are so many cdma mobile phone, there's really nothing in this respect, its output was very aware, for example output: 4. 2v 500ma, this is the lithium - ion batteries CCCV 2 data.
By yokio - Posted in: dell laptop battery
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Thursday 10 december 2009 4 10 /12 /Dec /2009 10:26


In a little district west of Washington Square the streets have run crazy and broken themselves into small strips called “places.” These “places” make strange angles and curves. One Street crosses itself a time or two. An artist once discovered a valuable possibility in this street. ( Sony vgp-bps2a battery)Suppose a collector with a bill for paints, paper and canvas should, in traversing this route, suddenly meet himself coming back, without a cent having been paid on account!

So, to quaint old Greenwich Village the art people soon came prowling, hunting for north windows and eighteenth-century gables and Dutch attics and low rents. Then they imported some pewter mugs and a chafing dish or two from Sixth Avenue, and became a “colony.”

At the top of a squatty, three-story brick Sue and Johnsy had their studio. “Johnsy” was familiar for Joanna. One was from Maine; the other from California. They had met at the table of an Eighth Street “Delmonico's,” and found their tastes in art, chicory salad and bishop sleeves so congenial that the joint studio resulted.

That was in May. In November a cold, unseen stranger, whom the doctors called Pneumonia, stalked about the colony, touching one here and there with his icy fingers. Over on the east side this ravager strode boldly, smiting his victims by scores, but his feet trod slowly through the maze of the narrow and moss-grown “places.”

Mr. Pneumonia was not what you would call a chivalric old gentleman. A mite of a little woman with blood thinned by California zephyrs was hardly fair game for the red-fisted, short-breathed old duffer. But Johnsy he smote; and she lay, scarcely moving, on her painted iron bedstead, looking through the small Dutch window-panes at the blank side of the next brick house.

One morning the busy doctor invited Sue into the hallway with a shaggy, gray eyebrow.

“She has one chance in - let us say, ten,” he said, as he shook down the mercury in his clinical thermometer. “ And that chance is for her to want to live.( vgp-bps2a ) This way people have of lining-u on the side of the undertaker makes the entire pharmacopoeia look silly. Your little lady has made up her mind that she's not going to get well. Has she anything on her mind?”

“She - she wanted to paint the Bay of Naples some day.” said Sue.

“Paint? - bosh! Has she anything on her mind worth thinking twice - a man for instance?”

“A man?” said Sue, with a jew's-harp twang in her voice. “Is a man worth - but, no, doctor; there is nothing of the kind.”

“Well, it is the weakness, then,” said the doctor. “I will do all that science, so far as it may filter through my efforts, can accomplish. But whenever my patient begins to count the carriages in her funeral procession I subtract 50 per cent from the curative power of medicines. If you will get her to ask one question about the new winter styles in cloak sleeves I will promise you a one-in-five chance for her, instead of one in ten.”

After the doctor had gone Sue went into the workroom and cried a Japanese napkin to a pulp. Then she swaggered into Johnsy's room with her drawing board, whistling ragtime.

Johnsy lay, scarcely making a ripple under the bedclothes, with her face toward the window. Sue stopped whistling, thinking she was asleep.

She arranged her board and began a pen-and-ink drawing to illustrate a magazine story. Young artists must pave their way to Art by drawing pictures for magazine stories that young authors write to pave their way to Literature.

As Sue was sketching a pair of elegant horseshow riding trousers and a monocle of the figure of the hero, an Idaho cowboy, she heard a low sound, several times repeated. vgp-bps2a battery She went quickly to the bedside.

Johnsy's eyes were open wide. She was looking out the window and counting - counting backward.

“Twelve,” she said, and little later “eleven”; and then “ten,” and “nine”; and then “eight” and “seven”, almost together.

Sue look solicitously out of the window. What was there to count? There was only a bare, dreary yard to be seen, and the blank side of the brick house twenty feet away. An old, old ivy vine, gnarled and decayed at the roots, climbed half way up the brick wall. The cold breath of autumn had stricken its leaves from the vine until its skeleton branches clung, almost bare, to the crumbling bricks.

“What is it, dear?” asked Sue.

“Six,” said Johnsy, in almost a whisper. “They're falling faster now. Three days ago there were almost a hundred. It made my head ache to count them. But now it's easy. There goes another one. There are only five left now.”

“Five what, dear? Tell your Sudie.”

“Leaves. On the ivy vine. When the last one falls I must go, too. I've known that for three days. Didn't the doctor tell you?”

“Oh, I never heard of such nonsense,” complained Sue, with magnificent scorn. “What have old ivy leaves to do with your getting well? And you used to love that vine so, you naughty girl. Don't be a goosey. Why, the doctor told me this morning that your chances for getting well real soon were - let's see exactly what he said - he said the chances were ten to one! Why, that's almost as good a chance as we have in New York when we ride on the street cars or walk past a new building. Try to take some broth now, and let Sudie go back to her drawing, (laptop battery)so she can sell the editor man with it, and buy port wine for her sick child, and pork chops for her greedy self.”

“You needn't get any more wine,” said Johnsy, keeping her eyes fixed out the window. “There goes another. No, I don't want any broth. That leaves just four. I want to see the last one fall before it gets dark. Then I'll go, too.”

“Johnsy, dear,” said Sue, bending over her, “will you promise me to keep your eyes closed, and not look out the window until I am done working? I must hand those drawings in by to-morrow. I need the light, or I would draw the shade down.”

“Couldn't you draw in the other room?” asked Johnsy, coldly.

“I'd rather be here by you,” said Sue. “Beside, I don't want you to keep looking at those silly ivy leaves.”

“Tell me as soon as you have finished,” said Johnsy, closing her eyes, and lying white and still as fallen statue, “because I want to see the last one fall. I'm tired of waiting. I'm tired of thinking. I want to turn loose my hold on everything, and go sailing down, down, just like one of those poor, tired leaves.”

“Try to sleep,” said Sue. “I must call Behrman up to be my model for the old hermit miner. I'll not be gone a minute. Don't try to move 'til I come back.”

Old Behrman was a painter who lived on the ground floor beneath them. He was past sixty and had a Michael Angelo's Moses beard curling down from the head of a satyr along with the body of an imp. Behrman was a failure in art. Forty years he had wielded the brush without getting near enough to touch the hem of his Mistress's robe. He had been always about to paint a masterpiece, but had never yet begun it. For several years he had painted nothing except now and then a daub in the line of commerce or advertising. He earned a little by serving as a model to those young artists in the colony who could not pay the price of a professional. He drank gin to excess, and still talked of his coming masterpiece. For the rest he was a fierce little old man, who scoffed terribly at softness in any one, and who regarded himself as especial mastiff-in-waiting to protect the two young artists in the studio above.

Sue found Behrman smelling strongly of juniper berries in his dimly lighted den below. In one corner was a blank canvas on an easel that had been waiting there for twenty-five years to receive the first line of the masterpiece. She told him of Johnsy's fancy, and how she feared she would, indeed, light and fragile as a leaf herself, float away, when her slight hold upon the world grew weaker.

Old Behrman, with his red eyes plainly streaming, shouted his contempt and derision for such idiotic imaginings.

“Vass!” he cried. “Is dere people in de world mit der foolishness to die because leafs dey drop off from a confounded vine? I haf not heard of such a thing. No, I will not bose as a model for your fool hermit-dunderhead. Vy do you allow dot silly pusiness to come in der brain of her? Ach, dot poor leetle Miss Yohnsy.”

“She is very ill and weak,” said Sue, “and the fever has left her mind morbid and full of strange fancies. Very well, Mr. Behrman, if you do not care to pose for me, you needn't. But I think you are a horrid old - old flibbertigibbet.”

“You are just like a woman!” yelled Behrman. “Who said I will not bose? Go on. I come mit you. For half an hour I haf peen trying to say dot I am ready to bose. Gott! dis is not any blace in which one so goot as Miss Yohnsy shall lie sick. Some day I vill baint a masterpiece, and ve shall all go away. Gott! yes.”

Johnsy was sleeping when they went upstairs. Sue pulled the shade down to the window-sill, and motioned Behrman into the other room.( Sony laptop battery ) In there they peered out the window fearfully at the ivy vine. Then they looked at each other for a moment without speaking. A persistent, cold rain was falling, mingled with snow. Behrman, in his old blue shirt, took his seat as the hermit miner on an upturned kettle for a rock.

When Sue awoke from an hour's sleep the next morning she found Johnsy with dull, wide-open eyes staring at the drawn green shade.

“Pull it up; I want to see,” she ordered, in a whisper.

Wearily Sue obeyed.

But, lo! after the beating rain and fierce gusts of wind that had endured through the livelong night, there yet stood out against the brick wall one ivy leaf. It was the last one on the vine. Still dark green near its stem, with its serrated edges tinted with the yellow of dissolution and decay, it hung bravely from the branch some twenty feet above the ground.

“It is the last one,” said Johnsy. “I thought it would surely fall during the night. I heard the wind. It will fall to-day, and I shall die at the same time.”

“Dear, dear!” said Sue, leaning her worn face down to the pillow, “think of me, if you won't think of yourself. What would I do?”

But Johnsy did not answer. The lonesomest thing in all the world is a soul when it is making ready to go on its mysterious, far journey. The fancy seemed to possess her more strongly as one by one the ties that bound her to friendship and to earth were loosed.

The day wore away, and even through the twilight they could see the lone ivy leaf clinging to its stem against the wall. And then, with the coming of the night the north wind was again loosed, while the rain still beat against the windows and pattered down from the low Dutch eaves.

When it was light enough Johnsy, the merciless, commanded that the shade be raised.

The ivy leaf was still there.

Johnsy lay for a long time looking at it. And then she called to Sue, who was stirring her chicken broth over the gas stove.

“I've been a bad girl, Sudie,” said Johnsy. “Something has made that last leaf stay there to show me how wicked I was. It is a sin to want to die. You may bring a me a little broth now, and some milk with a little port in it, and - no; bring me a hand-mirror first, and then pack some pillows about me, and I will sit up and watch you cook.”

And hour later she said:

“Sudie, some day I hope to paint the Bay of Naples.”

The doctor came in the afternoon, and Sue had an excuse to go into the hallway as he left.

“Even chances,” said the doctor, taking Sue's thin, shaking hand in his. “With good nursing you'll win.” And now I must see another case I have downstairs. Behrman, his name is - some kind of an artist, I believe. Pneumonia, too. He is an old, weak man, and the attack is acute. There is no hope for him; but he goes to the hospital to-day to be made more comfortable.“

The next day the doctor said to Sue: “She's out of danger. You won. Nutrition and care now - that's all.”

And that afternoon Sue came to the bed where Johnsy lay, contentedly knitting a very blue and very useless woollen shoulder scarf, and put one arm around her, pillows and all.

“I have something to tell you, white mouse,” she said. “Mr. Behrman died of pneumonia to-day in the hospital. He was ill only two days. The janitor found him the morning of the first day in his room downstairs helpless with pain. His shoes and clothing were wet through and icy cold.(laptop batteries) They couldn't imagine where he had been on such a dreadful night. And then they found a lantern, still lighted, and a ladder that had been dragged from its place, and some scattered brushes, and a palette with green and yellow colors mixed on it, and - look out the window, dear, at the last ivy leaf on the wall. Didn't you wonder why it never fluttered or moved when the wind blew? Ah, darling, it's Behrman's masterpiece - he painted it there the night that the last leaf fell.”

By yokio - Posted in: laptop battery
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Monday 7 december 2009 1 07 /12 /Dec /2009 09:45
Mobile phones, laptop computers, camcorders, cameras and other electronic products have become common in modern life and work of the high-tech consumer goods. Once you have them, you are right they are the unsung heroes - Li-ion battery will no longer familiar to. In fact, the lithium battery has continually broadened the scope of application, from the information industry to the energy and transportation, from space to underwater, lithium batteries are entering various fields of human society for the benefit of mankind.
Li-ion battery is divided into two types of primary Dell latitude d630 battery and secondary battery, the current low-power cameras and other electronic products mainly used in a non-rechargeable lithium batteries, while in the camera, digital cameras, mobile phones and notebook computers, large power consumption electronic products used to charge and discharge of secondary lithium batteries, or lithium-ion battery. Compared with the former, the lithium-ion batteries a substantial increase in demand year after year. Compared with the other batteries, lithium-ion battery has the advantage of open-circuit voltage high (marketed mostly 3.6V nickel metal hydride batteries and nickel-cadmium rechargeable batteries open circuit voltage of 1.2V), compared with large capacity (which is nickel-cadmium rechargeable batteries 2.5 times the nickel-metal hydride rechargeable batteries 1.5 times), self-discharge rate is low ( "8% / month, far below the 30% of nickel-cadmium batteries and nickel-metal hydride batteries 40%), long life (usually can be achieved 1000 times above). There is no memory effect is also a lithium-ion batteries popular as the outstanding advantage is that other rechargeable batteries are not available, people in the lithium-ion batteries do not have to take care of before the power has been exhausted.
Lithium-ion battery is Japan's SONY Corporation in 1990, developed and began to realize the commercialization of its appearance be regarded as in the second battery in the history of a leap forward in the next 10 years, its commercialization process has made leaps and bounds. Compared with the other secondary batteries, and its working principle is relatively simple. The reason is known as lithium-ion batteries, because such cells in both positive and negative electrodes or in the battery separator, the lithium ions are based on the form, the lithium-ion Dell latitude d820 battery cathode is a carbon material, such as graphite. Cathode is lithium-containing transition metal oxides, such as LiCoO2, LiMn2O4 so. Electrolyte is a lithium salt-containing organic solution. Lithium-ion batteries work (charging or discharging) process, the lithium-ion in the positive and negative electrodes and electrolyte membrane in the directional movement. Charging, driven by the electric field from the cathode material in lithium-ion prolapse, after electrolyte, inserted into the cathode in the. Discharge, the process just the opposite, namely, lithium-ion back positive, the electrons through the use of electricity, electronic products, and work power.
At present there are several brands on the market for small electronic products, lithium-ion batteries, these batteries usually contain an organic solution, it is possible commercialization of solid-state lithium polymer batteries or lithium batteries actually still contains a certain amount of organic liquid electrolyte, its main components and their working principle and the liquid polymer lithium-ion battery is almost the same, but made a great improvement on the packaging. We use lithium-ion batteries should not be arbitrarily anatomy battery, so as to avoid accidents.
At present, lithium-ion battery research focus area of research is its use in vehicles, made of electric and gasoline and used motor vehicles or hybrid electric vehicles, while there is also a real sense of the development of solid-state lithium batteries, lithium-ion Dell latitude d830 battery completely abandon in the organic liquid, so that the most safe and reliable lithium batteries battery. (end)
By yokio - Posted in: dell laptop battery
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