transitionMovement

1, digital battery: broadly speaking, digital dell vostro 1500 Battery is suitable for all batteries used in digital appliances; the narrow definition, digital batteries can be recharged often refers to the use of digital products and suitable for high-current battery discharge characteristics of high-energy environment. Popular varieties currently on the market include Ni-MH Ni-MH rechargeable batteries (Ni-Cd Ni-Cd has been eliminated) and Li-ion Lithium-ion rechargeable battery two.

    2, cycle life: that is the number of charge and discharge, the higher the more economic use (almost all the nickel-metal hydride battery market nominal "charge cycle 1000 times," or even 12,000 times, it is the ideal value, usually difficult to achieve), usually it into a negative relationship with capacity.

10 strokes to change the concept of digital batteries Cheats Guide

    3, Battery capacity: Capacity refers to the battery under certain conditions, the total power consumption can be released (unit: mAh mAh), for example 2300mAh NiMH rechargeable batteries, 230mA for the constant discharge of digital appliances, you can use 10 hours, the total discharge capacity of 2300mAh.

    4, charging time: Digital Battery charging time by the battery capacity and charge current decision. Charging time = battery capacity / charge current "factor, which factor by the ratio of charge current with a total capacity of decision, the smaller the ratio the greater the coefficient, the coefficient is usually between 1.1-1.6.

    5, voltage: voltage of the circuit current form, (the stronger the higher the voltage, power), power supply voltage of the device is provided. 3.6V and 7.2V lithium batteries lithium batteries are two more commonly used, notebook lithium battery voltage of 12V or so usually; conventional nickel-metal hydride Dell inspiron 1520 Battery voltage 1.2V, 0.8V when the voltage is essentially the power consumed to have enough power to reach 1.5V when full or even higher.

    6, current: charge in the electric field, potential high flows from the lower potential, namely, current, or current intensity. Current unit is the security (A, ampere), which is one of seven basic international unit; a security equal to 1 coulomb per second, the flow of electricity.

10 strokes to change the concept of digital batteries Cheats Guide

    7, Resistance: Resistance is the current flowing through the battery internal resistance when the subject. Resistance is an important measure of battery performance specifications. Normally, the internal resistance of a small battery-current discharge capability, large internal resistance and weak battery discharge.

    8, self-discharge: self-discharge, also known as charge retention ability, refer to battery storage of electricity under certain conditions, the retention capacity (which can be understood as the ability to lock power), digital batteries are relatively minor self-discharge rate, of course, the more low as possible.

    9, security: electric core technology, the purity of the ER materials, whether Accord aging testing, circuit design of humanity, shell material and whether factors such sophisticated packaging, are directly determine the digital dell inspiron 1720 Battery (especially lithium batteries) security. Unsafe battery easily leaking, overheating, burning, or even an explosion.

    10, charge and discharge characteristics: to describe the battery charge and discharge activity when the electrochemical reaction is the core of the digital battery indicator. Can be understood as performance, that is, how much charge into the electricity, and how much energy the same time be stimulated. Is used to describe the persistent strong-current discharge characteristics.

    11, charging: over-charge for short. Lead to over-charging voltage is too high and affect battery life, severe burn will result in overheating and even explosion. (Usually more likely to result overcharge poor charger).

    12, over-discharge, excessive discharge of the short. Over-discharge can easily damage batteries, shorten battery life. Excessive discharge of the battery voltage is too low, it should not use the fast charge-current charge, it should be a small current charging voltage to a certain degree of reuse to enhance filling fast.

    13, fast charging: fast charge, or a quick charger for short. Quick charger on the requirements of higher intelligence technology, protection function, the faster and more intelligent rechargeable battery charger, the user more like it, of course, the more expensive price.

    14, standard charge, the standard current charging, or a standard charger for short, also known as "slow charge."

    15, trickle charge: As the name suggests, the meaning of small current charge. Mainly for Ni-MH battery charging, when the voltage rise to a certain extent, (capacity close to the exchanges), Smart quick charger will go to trickle charge, just like water with slow to fast over a small bucket full of water injection to the same.

    16, charge-discharge efficiency: Ni-MH dell vostro 1700 Battery in the initial stage of constant current charging, the battery voltage tame cooked up, and in the battery close to full Shiyou slightly decreased. Ni-MH battery internal resistance is low, thus has a high charging efficiency. Fully charged battery, the voltage drop in the initial stage of constant-current discharge is slow, but nearly exhausted the battery when the battery voltage began to drop dramatically. In the discharge process, the nickel-metal hydride battery internal resistance is almost certain to maintain the value of nearby very few changes, but close to completion of discharge, the battery internal resistance was sharply increased, and the time is very short, indicating nickel-metal hydride batteries with high discharge efficiency.

Experts suggest buying a laptop, generally speaking, should the price, performance, quality and service taken into account four aspects:

Price: Laptop computer prices by several factors below, ① configuration: from the screen, CPU, hard drive,Dell d820 battery memory and other parts of the specification decisions. Therefore, consumers decide to buy laptop, you should be comparing the same product configuration; ② Brand: good brand of your brand than the general 50% or even 100%; ③ nature: in the current market is recognized as the global the most advanced notebook computer, the price than similar models opened a wide gap between when the market appears more advanced new models, old model price will drop.

Performance: Considering the performance of laptop should pay attention to speed, capacity, upgrade potential and comfortable and so easy to use. Speed of the decision by the CPU and motherboard, Pentium's CPU into the mainstream. From the capacity, the notebook computer memory and hard drive prices much higher than the desktop, and upgrading at a later time not readily available, purchase the best plan according to use an extension in place.

Quality: notebook computers often have to carry and use, and higher quality requirements, the time of purchase if funds allow, as far as possible purchase brand-name computers.

Services: choose who must take the specific terms of the implementation of the maintenance services to the paper, to avoid some of the businesses before selling machines explained the terms of some vague hype, then the fault free to shirk their responsibilities.
At the same time, experts recommend that consumers use laptop computers in the process, several key components to do their corresponding

Protection:

LCD display: Laptop screen resolution in the past the vast majority of 640 × 480, a model now on the Dell d830 battery market most of the new 800 × 600, high-grade models are used 1024 × 768 resolution display. For cleaning screens in use, only with a clean soft cloth, can not use any chemicals to clean the LCD screen. In packaging, transport and carry laptop computers, to give priority to the protection of the LCD screen to take adequate protection measures to prevent the LCD screen broken.

Keyboard: Notebook keyboard keystrokes in use can not be too hard to pay attention, because the notebook desktop computer keyboard is much less durable, some computer games require quick hit individual keys repeatedly, do not operate in this laptop. Laptop screen when not in use must bring together down the keyboard to avoid contamination, the absolute prohibition of holding the hands of food handlers laptop. Most laptops can support an external ordinary keyboard, in the office and home, an external keyboard with the ordinary takes only 100 yuan, not only comfortable to use, but also on the effective protection of laptop keyboards.

Rechargeable Battery: Rechargeable batteries used in notebook computers into nickel-cadmium, nickel hydrogen, lithium-ion 3. Rechargeable laptop batteries, rechargeable batteries like mobile phones, there is a certain "memory effect", in the three kinds of cells, the "memory effect" is the most nickel-cadmium batteries, "Memory effect" is the weakest of the lithium-ion battery. According to the characteristics of rechargeable batteries, rechargeable batteries to protect the two major principles: First, there is no necessary in the circumstances do not enable the battery, plug the AC power directly to the work; Second, if the battery is enabled, you should run out of power after the charge, do not When the battery has not run out of the AC power plug on it.

Hard: General consumer notebook hard drives that have earthquake measures, but in fact the seismic measures the hard disk is not only read and write data to automatically lock the head to a safe track, if the hard disk read and write operations encountered in the shock, most likely lead to permanent physical damage, so the user must be careful not to turn on the hp nc6400 Battery power of moving a laptop, not in a moving car or other vehicle, use the laptop.

Battery charging usually have the following three kinds: ① constant voltage charging mode. Constant charge voltage, charge current decreases with the increase in Acer aspire 5050 Battery voltage, charge current is zero when the charge end. ② constant current charging. The process of charging current is kept constant, in practice, often phased constant current charging method, due to the late charge, such as the charge current remains the current value of charge at the beginning, then
[Charging Power Supply]
Charging power supply
Will provoke a lot of bubbles and mist, the battery temperature rises, causing the battery plate damage, reduced capacity. To this end, the late charge to be reduced when the charge current, initial phase of the charging current, charging current is small after the stage. ③ constant voltage constant current charging mode. Constant voltage charging and constant current charging with two characteristics. Charge by constant current charging at the beginning, when the voltage produced when air bubbles, then constant voltage charge. Charging power supply is often used single-phase (or phase) half-controlled rectifier or controlled rectifier circuit connected AC voltage regulator plus rectifier circuit. In the DC circuit using smoothing reactor inhibited DC current pulse, to prevent the current intermittent. Have a corresponding charge in different ways according to the detection circuit and automatic or manual adjustment circuit. Charging for fixed floating charge battery power, constant voltage constant current charging mode is typically used, and requires the following characteristics: high accuracy constant voltage control; DC output voltage from the battery discharge at the conclusion of the low voltage to the average charge voltage range easy to adjust; output dell xps m1330 Battery voltage - current characteristics should be too restrictive flow droop.
In addition to these conventional charging method, there are two charging methods: ① fixed gas rate charging method. The initial charging process, with a high current charge, when the battery of a constant outlet rate value, the gas detector of the control signals, to lower the battery charge current, so that outgassing rate stable at a lower value. ② temperature charging method. The process of charging, the battery temperature will rise, when the temperature reached some value, the thermostat or thermostats, Tong Guo detection, and timely Fachu control signal, thus reducing charge current Shixudianchi the temperature remained at a set Zhi.
Pulse charge, fast charge discharge depolarization method is the early study of 50 successful rapid charging technology. Charging time charging from the conventional method of dozens of hours to several minutes. This method of battery charge and discharge current waveform as shown. Apart from fast charging power supply charge circuit, there are discharge circuit. Use of DC discharge circuit can still switch to battery discharge energy can be saved directly on the RL; active inverter can also be used to make batteries for AC power feed, also play a discharge effect. Fast charging power supply in the charge and discharge outside the main circuit, but also a corresponding dell wr050 Battery trigger circuit testing and process control.

Regular use of laptop's friends may have a most profound realization is the feeling that a laptop to use a certain stage, the Hp nc6200 Battery screen will appear dark situation. Like this from happening, maintenance terminology, referred to as "dark screen" is primarily aimed at high-pressure plate can not supply electricity to the lamp on the LCD screen.
The maintenance industry, we have the LCD screen brightness is not enough referred to as "dark screen" means that the ignition coil failed to supply electricity to the lamp on the LCD screen.
Regular use of laptop computers for people who know there is a small LCD screen on the LCD screen lamp for bright, so dark when the screen caused by many people mistakenly believe that is the lamp burned for-1 on OK, and if the LCD screen lamp pipe is so easy to burn, then I think the manufacturer may more complaint letters, where the failure of the screen to make a dark detailed explanations.
First, the dark screen of failure caused by four points:
1, fluorescent tubes disconnected (normal use of the computer will not be destroyed or broken by the high-voltage lamp, lamp off is mainly due to: computer fell to the ground floor lamp strikes the grave)
2, ignition coil no power supply to the lamp (the motherboard with 3-4 group of voltage for the ignition coil, ignition coil through the chip for the transformer to the lamp post, chip to chip, aging or over-current burn without electricity output)
3, motherboard no power Hp nc6400 Battery supply to the ignition coil (the motherboard there are 3-4 for the group to the ignition coil voltage, motherboards, there are two groups-chip output voltage to high voltage board, chip to chip, aging or over-current burn without electricity output)
4, cable disconnect (between the motherboard and the ignition coil has a cable connected for a long time moving LCD screen cable disconnected, resulting in no main electricity supply to the ignition coil on)
These four points are the major problems caused by the dark screen where the points, the first three are more emerged, the fourth point of the opportunities that arise is relatively small, because the connection line is to use a special kind of shield is covered with it and a small number appear to connect line disconnected phenomena. Professional maintenance staff for the detection of each process are essential.
Contact: Mr. Yang
Note: This also includes: data recovery, office equipment repair, projector repair, IT outsourcing services, and training.
How to correctly understand and use the Hp nx7000 Battery
1. Notebook computer batteries for use considerations.
"A" want laptop battery longevity, there must be a good start, a new notebook at the first boot with the battery usually about 3% of the electricity, the first time do not use an external power supply, I put the battery inside the power exhausted, until the shutdown, and then re-use an external power supply charge. The exhaustion of the battery power even after charging, charging time must be within 14 hours, repeated three times to do in order to fully activate the battery, in this way can lay a good foundation for future use.
"2" notebooks battery life is measured in terms of the number of charging and discharging. In the absence of necessary, do not enable the battery, if a long time do not use the battery, charging to 50% longer battery placed in a cool place to save. If you enable the battery, you should run out of power after the charging, not in the battery have not used up when they plug in the AC power. When the battery fully charged, it should disconnect the AC input, since overcharging batteries overheating will shorten the battery life.
"3" Generally speaking, today's notebook computers with intelligent Hp pb994a Battery protection, the battery will not be damaged due to normal operation, but it still may be a result of life to the damage or other special reasons. For the nickel-metal hydride or nickel-cadmium batteries, has a memory effect, if used improperly, the battery discharge time is becoming shorter and shorter or even impossible to recharge.
"4" Lithium-ion battery charging time constant of the way first in order to fast-charge voltage reaches a certain value and then to slow charging constant voltage mode. Notebook computers are often not strictly a constant-current charge of monitoring devices. The system load when a large charge current on small, whereas the large, the current from the AC power adapter power margin decision. Clearly, the system will charge the battery and other components, such as CPU, hard drive, LCD and other competing energy sources.
"5" is to try to discharge a small current discharge operation is slow down and let the CPU, hard disk stops turn, transferred the darkest the screen (or close the switch off), then do not run any programs until the laptop automatically shut down. The emphasis on small-current discharge is to prevent premature detection of Hp presario x1300 Battery shortage.
     Generally speaking, deliberate and unnecessary use of batteries in accordance with the method above, the normal office use on it.

Some time ago have been rumors that Windows 7 will damage the notebook battery, around friends do have a similar

phenomenon, but in the end is the Windows 7 ruined the battery or the Dell inspiron 1200 Battery itself is really bad, this issue has

been the focus of controversy, I that the system the possibility of ruining the battery or not, if the system is

really capable of such things, chances early as 2000, XP era arose, so why wait until now.

Later in the Microsoft engineers saw an online Blog, which explains in detail the problem happens I also subject

to Microsoft's offer was on the Translation of the article, then released to your information, the so-called

benevolent see benevolence and the wise see wisdom the letter be good letter whether, in short is a user account.

My English is limited, if everyone saw the translation is wrong, they do not affect the intent, or to laugh it

off, or else quietly told me is all.

Article, the author is Steven Sinofsky, the liege lord is said to head for the largest Windows products, old

powerful the ... ...

[Text to the]

In the past week, we saw in the blogosphere about Windows 7 and the number of active battery topic, especially on

"Please consider replacing the battery," the new Windows 7 news. Since this is a topic on the Windows 7 project,

we will use this blog to provide people with updated information. As we have mentioned many times, we will always

be committed to upgrade Windows 7's quality, and take seriously any we have received reports that will identify

the potential problems, and these problems may result in systems failure. In previous posts we talked about when

we receive the Bug report, especially when we begin to see some reports seem to indicate that the same problem, we

will take steps. Over the past week or so, we have been working hard to see through these steps and more, we would

like to learn more about this problem in Windows 7 Is there any place we need to resolve. At this point, we have

no reason to believe that in this case there are any problems on Windows 7's.

Users in the blog and forum posting claims Windows 7 warning them that "please consider replacing the Dell inspiron 2200 Battery,"

and before the upgrade to Windows 7, and no such problems, this situation has caused in the past week, the

attention of some newspaper articles . The article describes the support forum posts that Windows 7 is not only

warning the user that a battery defect - that is what we work for the design of Windows 7 - but also hinted that

Windows 7 for the state to make the wrong The report even worse, causing damage to these cells. To make everyone

in this circle well aware - Windows 7 to issue the correct battery warning, because it really bad, Windows 7 has

neither made an error report on battery status, nor by any ways leading to cell damage. In each case, we have been

able to confirm those reports are in fact necessary to recommend a battery replacement.

Use all the tools at our disposal, including the contact problem in the forum on the customer, customer service,

communication, and our computer manufacturers, of course, the telemetry in Windows 7, we have been monitoring

reports, and on this to discuss a new feature, trying to show that Windows 7 may lead to behavioral problems

distinguished between the report. In the latter case we are trying to understand its scope and access to hardware

in order to reproduce the error behavior. So far, all of these steps that we have done in the battery health

problems customers described the contents of the report, and in all cases, we investigated to Windows 7 is very

accurate to detect a defective battery. Before I start talking about the status of this special issue, we should

first look at the details behind this new feature.

Battery life on the computer (you run time on battery power), the most obvious one is the sony vgp bps2a Battery itself, the

components. The capacity of the computer itself, the degradation of the battery is charging and the provision of

electricity used (like all rechargeable batteries do). The reason is complex, the chemical changes in the battery

includes irreversible changes, and the increase in internal resistance, in addition to depending on battery design

and manufacturing. Computer users in terms of battery life, this degradation will reduce battery life. Eventually,

the battery must be replaced, so the computer can only be restored to an acceptable battery life. Quick check

mainstream notebook computers, will see the battery typically will have a 12-month guarantee, this length on the

battery life is also obtained by the statistics that we can accept the significant degradation of battery duration

(which means you To begin to pay attention the need for more frequent charging a). Like us have to use the same

laptop (or mobile phone, music player, or any other necessary equipment, rechargeable batteries) in 2023, and take

frequent repetitive charging, no doubt you can "feel" to the battery life attenuation, in the absence of any

information provided to us under the premise that we can reference the battery life of the decay due to any

factor.

Windows 7 use a new laptop battery function, the function of circuits and firmware to Windows full report can be

healthy degree battery. This is to use watt-hour (W-hr) consumption volume in absolute terms. Windows 7 On this

basis, made a simple calculation, the original design capacity of the battery, based on accurate calculate the

current percentage of capacity fading. In Windows 7, we set a threshold for the decay rate of 60% (This means that

the battery available capacity is only 40% of design capacity), and Windows 7 will help you interpret the report.

At this point, for example, charging a battery which could be available after 5 hours of electricity, but now, on

average, only about 2 hours. Windows 7 in the battery in this battery meter icon in notification, and it sends a

notification message "Please consider replacing the battery." This notice is the new Windows 7 features, in

Windows Vista and Windows XP does not exist.

Battery meter displays a notice that the battery may be bad

PC battery by the system firmware (or BIOS) reveals the degree of sony vgp bps2b Battery capacity and health information. In the

Firmware Interface (ACPI) on the detailed specifications, but the most basic level, the hardware platform and

firmware provides some read-only areas that describe the battery and its state. The firmware provides a battery,

including manufacturer, serial number, design capacity, and the last full charge capacity. The last two parts of

the information - the design capacity and the last full charge capacity - is used to determine how many Windows 7

has natural decay of the battery. This information is read-only, and no way to make Windows 7 or any other

operating system to write, set the battery status or configuration information. In fact, all of the battery

discharge behavior is completely control the hardware in the hands of the battery. Windows can only address it

from the system firmware to read the battery information. Some reports erroneously claimed, Windows modify this

information, it is absolutely impossible.

As mentioned earlier, every report we receive relevant, we only see the new features in Windows 7 to use this

report battery status, and we see that the battery described in the report did not reach the specified threshold .

Here we will discuss the specific data to support this view. Some users in the previous system, all the normal

after the upgrade the computer system to see such a warning on the course will be surprised, this is very

reasonable. This is due to the nature of the attenuation caused by the battery, but for users that Cui Jian is not

obvious, it is difficult it until Windows 7 to provide such information have changed. We recognize this feature of

Windows 7 in a "cause" of the performance of the change, but actually doing all the things Windows 7 only reports

the things that have happened.

The following data points to help us understand that the report of the information. Keep in mind that all we see

are optional added remote, anonymous and follow the privacy policy.

    * We have seen reports on this notice no new hardware or recently purchased a computer to reproduce. Although

we have seen some reports that the new computer has received the notice but in all cases, we have confirmed that

the Sony vgp-bpl2c Battery is already in the state of decay.
    * Our OEM partners have to use their remote (call center, support forums, etc.) and have let us know they do

not see any circumstances beyond their expectations. It is noteworthy that the computer manufacturer for the

customer to solve the battery problem, get a clear view, that is, both in general terms or in specific models,

schedule and batteries in the end what is to be expected.
    * We passed through all major online support and self-help forum, and has been working at the appropriate time

to follow up any errors displayed on the notice to report. Through this work, we have identified a new battery or

the computer does not reproduce the problem described in the report and only learned of the battery capacity is

indeed attenuated.
    * In our customers telemetry from RTM, only a small percentage of users receive a "Please consider replacing

the battery," the notice, as expected, we see these systems use more than 1.5 years. Compared with the pre-release

version, we see relatively less informed, just as reducing the average age of the system as.
    * Microsoft has received 12 customer service event, in addition to various other forums from 8 additional

cases. So far (a total of 20 events), these events except the battery does not have a show for any reason other

than degradation.
    * Microsoft has been using the TechNet Community Moderators to help further contact customer notice on this

report, we have designated additional customer service personnel to prepare for this event. In any case, we have

received about 30 contacts, which did not find any notification on the new arguments or state.
    * In Windows 7 pre-release version of the test, the notification is displayed, we see almost exactly the same

with the customer experience. In fact, look at pre-release testing of hardware sales, we receive this notification

system that maintains a constant increase in the number of very minor. From this fact see a large number of

customers purchased a new computer or Windows 7 in recently purchased a computer Compaq tc4400 Battery using Windows Vista provide the

upgrade.
    * During the inspection, this shows that the machinery of this notice telemetry report, we do not see any

additional reliable data show that any other system abnormalities.
    * Although the ACPI battery status information provided by the operating system is read-only access, we

conducted a thorough code review and verification to determine that there is no ability to modify the battery

status information code.

These data will confirm our view, we only see the emergence over time of the normal battery degradation. In this

new Windows 7 features provided in the transparency of the technologies used to produce a notice, which in the

past for the customers is not visible, but realized very quickly after the upgrade. This is what we see in these

emergency root causes of the post, but the reality of the situation can not change the battery. We have not

confirmed that to buy new machines and the battery situation.

As we have said about the quality of any reports of Windows 7, we will continue to diligently treat, when reports

of potential problems, we will use all the tools at our disposal to find out from the bottom of it, in the need

for code changes, we will be improved and released to the Compaq nc4200 Battery customer. We sure as we can, we will focus in this

report, and to fundamentally solve the problem, but we will continue to monitor relevant circumstances. In

particular, we will continue to work with our OEM partners, communication links, they will at any time to monitor

their customers and computer.

One soft spot: Motherboard

Ask around the repair had laptops brothers, may account for how the number of board issues, including the author's first books are also linked to the motherboard because the. General dell vostro 1700 Battery board problems, it is demonstrated that the machine can not boot. Motherboard problem, in many cases is caused by short circuit. Detrimental to the general board, only for motherboards. The motherboard prices accounted for about a quarter machine, but the problem is a very a headache. We need to guard against is not to liquid leakage into the motherboard, this is the most common mistakes people. Do not refresh when the BIOS. In addition, the board was too high breakdown voltage is not uncommon. If the peak or power failure just after the restoration of electricity, thunder, the author proposed to use battery-powered, do not get electricity.

Weakest point of the two: the hard disk

Although the notebook hard disk drives than the Taiwan earthquake, but he is still very afraid of breaking to. We are interested to take a hard look at books, goes on the label or prompt us to throw it scared. Why? Although the books hard as confidential much smaller than Taiwan, but the principle is the same, but also because of complex electronic components constitute. Although the manufacturers of the books of the earthquake resistance is optimized, but because of its own composition, or is this fear of shock. Remind you, means of transport in the rough, do not use books. Books on the table, careful not to fall to the ground. This know, books hard drive cheap but the information inside is priceless, but endless trouble ah lost.

Weakest point of the three: LCD

LCD is relatively weak, is also a fragile goods. LCD is mainly made of glass and crystal, lamps component, from head to toe is a fragile forest sister. Although LCD organic cover protection, but in the current trend of slim Hp hstnn-ib33 laptop Battery books, this protection is very limited. Do not place heavy objects on the LCD, otherwise it would fracture the glass layer. Li Dai go out books on the bag, careful not to run into a hard object books. Accidentally dropped on the floor, LCD is also often bear the brunt. The large LCD is also one of the books, about a quarter of the whole machine, but one is rarely damaged, but repaired, only one in its place.

Weakest point of the four: serial, parallel port

These interfaces because they do not support hot pluggable, and some careless brother does not shut down operations under the circumstances, it is easy to serial, parallel burning. What is more, resulting in short circuit board scrap. Although another series, parallel port for a not too expensive, but too much trouble for them. Some brothers may say that we almost do not have serial, parallel port, the bad, then let him go bad. But the books for engineering debug, then, these two interfaces is indispensable, when you need to no use but a very painful thing.

Weakest point of the five: Touchpad

Summer, and our hands dirty more easily. Touch pad with a finger operation, the above coating will soon disappear, severe shortening the life of the long run can range from books keyboard wear and tear, while in retirement. When opening the laptops, we can first wash hands?

Weakest point of the Six: drive

The weakest point of the disc with some special love of the MM has a great relationship. To know the original standard optical drive in the thousand or more generally, to see if the disc is always the case, I dare to guarantee entry on the head, about a year, your drive will hang. You really look at the disc, it is better to buy a DVD player, how is stronger than laptops ah. Laptops of optical Hp dv9500 Battery drive that I have Gansha it? I T40 The Herbalife addition to installing the software, burn the backup, the quit other things.

1. No need to ensure that every time the full re-release END electric charge;
2. A period of time to do a protection circuit placed under the control of deep-charge battery power to amend the statistics, but it will not increase the actual capacity of the Compaq nc6000 Battery ;
3. A long time without the battery, should be placed in the shade in order to weaken its internal self-passivation reaction speed;
4. Protection circuit is also able to monitor the battery self-discharge, long-term without the battery should be charging to a certain degree of power in order to prevent self-discharge of batteries in storage in the discharge of excessive lead to excessive damage to the battery.
In fact, there is not much to take into account the battery use of attention, in other words, is the need has not much effect. The number of times a cell can use the differences are mainly coming from the battery itself, the manufacture of individual differences, rather than use. Choose a good reputation of the notebook PC brand, is the use of long-life battery in the future one of the guarantees.
Note: This document from the main part of the Internet, only for reference; Dell, the resulting document does not bear any consequences related responsibilities.
Battery for daily use maintenance and repair work

Laptop computer battery is consumables, batteries, once the Kaifeng to use, will begin the aging process. With the aging rate of the chemical characteristics of the battery varies. Aging rate with the use of usual methods. If the frequency of battery charge and discharge, it will accelerate the aging batteries. Battery in use for over a period of time, power will gradually shorten the time until it can not be used. Therefore, shortening of battery life is a normal situation. Although usually you mostly use an external power supply, as if not using batteries, but in fact, the battery's aging process as time goes on, has been engaged in, use less battery can only slow down the process, they can not make it stop.
Affect the battery life of factors including: battery charge / discharge times, use of environmental temperature, battery storage temperature and the size of the battery suffered shock. It can be derived cells used in several "principles":
1, in the AC ADAPTER (external power adapter) mode, the battery used if it has not gone through charge / discharge process, the Acer aspire 5050 Battery life will be longer than normal use.
2, at 40 degrees Celsius temperatures, the battery consumption rate would be much faster than normal temperatures.
3, in a similar Singapore, South China in areas such as high temperature, vehicle use, the battery temperature can easily reach 65 degrees Celsius. This will lead to the rapid depletion of the battery.
4, throw, hit the battery such acts will also accelerate battery depletion.
5, DELL fast charging does not affect battery life.

The use of some large power consumption can also affect battery life:
6, use the CD-ROM drive, such as DVD, CDROM and CDRW drives.
7, the use of wireless communication devices, PC cards or USB devices
8, using high-brightness display settings, 3D screen saver or other large-power programs, such as 3D gaming.
9, running large memory requirements, the power-hungry programs.
10, at the highest performance mode, run the computer power management program that is set to "always open" or "Max Battery mode."
11, frequent access to the hard disk.
12, memory and main memory usage and quantity.
13, activity procedures, including the background running programs.
14, LCD brightness (LCD more light, the greater the power).

Why does the battery charge up to 100% charge, after continued
This is an error. To determine whether the battery is charging batteries to complete a standard value, the battery charge reaches the value, the charge will appear to complete, and sometimes some of the standard error of values, such as the high point, it will cause this phenomenon. In fact, this is just a display problem, battery life is not in any way.

Why does the battery show 100% of electricity charging light still blinking
In the Windows2000 operating system will happen. When the battery is fully charged, even if the computer then there is an external power supply, the battery will also be discharged. Windows2000 detection mechanism is a period of time to test the battery capacity, it became apparent that the battery has dropped slightly, they will start the charging process, so that battery charging light will blink. Therefore, the computer for this phenomenon is normal.

Why WIN2K under the battery is fully charged dell xps m1330 Battery is displayed as 99% after the
After fully charged, the standard BIOS will be at 95-100%. The best theory is 100%. Battery power and charging circuitry from the chemical composition of the decision. BIOS and WINDOWS nothing to do with the display of bias. BIOS will regularly read the feedback voltage of the battery, and then calculate the value for the electricity. WINDOWS Zaiqu read BIOS values. If the BIOS there might be problems doing very fine. Some BIOS engineers in the design process in general will be smarter, when it felt that the charge current has been reduced to "0" when, BIOS will be considered as meeting the 100%, rather than formula. Formula will depend on the deviation, different batteries, the voltage feedback to come back regardless of the theory in mathematics, or physics in theory, it is definitely 100% not the same. BIOS for example, when the definition of feedback voltage to 13.111V is 100%, but no feedback voltage of a battery will be fully equal to 13.111V. Some BIOS will check the charge status of the past, if it is felt that each time only charge to 97% (for example), which fixes the standard values, the next BIOS will display 100%.

In the DELL computer, the battery has the following three states:
? Charging (in charge), on behalf of the battery in the slot, connect with AC adapter.
? Discharging (Discharge), on behalf of the battery in the slot, not connected to AC adapter.
Idle (idle), when there are two batteries, of which one is Idle state, the other one for the Charging state.
Note: Charging the battery is not necessarily in the charge state, when the battery is fully charged, the representative to connect with AC. If the battery is rechargeable battery feedback back to the current decision.

---- Battery charge to 94% of the battery charge current is 0.728.
x x x x 00 00 0.728 94 010A 01 0A
x x x x 00 00 0.724 94 010A 01 0A

---- Battery charge to 100% of the battery charge current is 0.
x x x x 00 00 0.000 100 471A 47 1A
x x x x 00 00 0.000 100 471A 47 1A
The new battery power display is sometimes incorrect, such as the dell wr050 Battery is fully charged, still shows 96%. Several full charge and discharge cycles, it will gradually reach 99% -100%. Battery from the battery chemistry decision, and display the value of the link is not too accurate.

We all know that laptop cells to charge and discharge, the dell vostro 1000 Battery capacity will gradually decrease, so in a notebook to use for a long time, or buy second hand notebook is also often encounter the problem of insufficient battery capacity, of course, you can buy a new laptop battery, But to use up scrap of notebook batteries is not Gengshuang, of course maintenance in a notebook which is a common problem, we adopted the following laptop battery for the core of this whole process to find out how to change laptop batteries.

Taobao just bought Dell X300 (price does not specifically say), designed as a light machine normal everyday use, like its slightly rounded appearance, 1.3kg weight and pm2 with the 1.4Gcpu, unfortunately the battery is only 10 minutes less, and self-discharge is very powerful, full Otherwise, after 3 days, the battery only a light of.

As a result, intends to change its core. It is not their first time for the core, and the key is to be prepared to work to understand the core requirements for the battery voltage, internal batteries, and will constitute a lock (very important)

Exterior view from the battery, my battery is 11.1V, 1900mah, flat, based on past experience to judge must be 3 103 448 batteries in series to form 3 * 3.7V = 11.1V voltage and capacity of single 1900mah Sanyo batteries.

Battery external marking, 11.1V 1900mah

Also judging by batterymon, W / L has a value

According to experience, if hastily remove the old batteries, then no doubt the battery will lock.

So the method is used for bridging batteries. The so-called bridge method is to change batteries when external dell 6400 Battery power supply through the internal circuit board to ensure the battery is always charged state (not brown), so in other words, when the core is equal to cheating the motherboard battery and let it power mistaken core had not been removed, resulting in not the purpose of the lock cylinder.

Then follow these steps to change core notebook battery:

The first step: the preparation and the same batteries for a number of battery section, under the battery, using three 18650 batteries in series

Step two: the original laptop batteries in preparation for the new batteries and batteries need to bridge to the same pre-charge voltage value, for the convenience, simply is full, the three new 103 448 and 18650, and the battery is full to the around 4.10V

Bridge method
Step three: the three series of 18 650 from the cathode to the anode of each pole are connected a line to the original cell batteries, no problem welding sequences. (Pre-charge of the reasons why here, if two different voltage batteries will cause the phenomenon of charge each other, if the voltage is too much disparity, once the bridge and got to the battery batteries batteries, causing a steep voltage down, the battery protection circuit may cause a short circuit in the lock cylinder to judge the battery problem!!)

Good welding according to the original position

Step four: demolition of the old 103,448 batteries (with caution, if you need welding on the welding of the move is needed to scissors scissors)

Cut nickel plate, welded together after the double-sided tin, absolutely solid

Step five: the new batteries in accordance with the style and location of the original soldered to the board, because it is bridging dell inspiron 6400 Battery operation, so there is no problem welding sequences.

Another solder, solder to take on
Step Six: demolition of the bridge with the 18650 batteries, make new batteries insulation, cove
Final result, and sure enough there is a neutral gear

(Exchange core is completed)

This battery you should have the same level with a new battery.

Charging curve

On the post-core laptop battery for charging and discharging:

I generally use the following method to activate the charge and discharge (calibrate) the new-for-cell battery.

Step one: shut down, plug the power charge, in general, whether you put batteries in full before it will show charge status, and thus can determine the success for the core

Step two: plug in the power, charge about 1 hour, boot, under the windows through batterymon determine whether normal cells recognize

Step Three: Unplug the power discharge, put about 1 hour (or half an hour, remember not all is done and leave 30% -50% of capacity)

Step four: Afterwards on the charger, this time all full, and to 100%, the battery light is off, then charge 1-2 hours (do not charge a night to remember, first you do not know the new replacement batteries there are any problems, the second in the circuit does not adapt to the new batteries is likely to occur before the unexpected problems)

(From first to fourth step, one must not go away, if the boot, then check the power at any time, if the shutdown, then check the battery at any time by touching the temperature and found that hot, immediately disconnect power supply, safety first!!)

Fifth step: discharge the battery completely, close the windows of the 10% and 3% of the warning, into automatic shutdown date, before the remaining 20% of electricity can be online, watch movies, run 3dmark and other big consuming battery operation, the 20% of the time, on the use of standby it, close all programs, let it complete release.

Step Six: Automatic shutdown immediately after the charge (Step avoid night, because you do not know when to shut down, because the shutdown when the battery is in deep discharge state, if not promptly charged, the battery life significantly negative, lithium battery theoretical minimum discharge voltage is 2.5V, but less than 2.5v, if one was immediately charged, the battery will not damage, damage to the fact that when the battery voltage is below 2.5V charging time when there is no result.)

Step Seven: Repeat step five, the sixth step of the process 2-3 times (in fact, has been able to end the sixth step, after all, fifth, sixth step is to make the depth of dell 1501 Battery discharge, the process actually used at a later The process carried out, no need to finish by one-time, this process is actually called the calibration process, remember: just let the windows more Jingque calibration of Xian Shi Sheng Yu battery power and use of Shiji time and would not improve the battery! so-called calibration Neng improve the battery life is purely crap! each calibration time, power will be less and less (battery power instead of the actual display of the power you see).

If you see displayed after the calibration of electricity increases, in fact, because the process of battery, the computer program to judge the speed of cell loss is greater than the actual loss rate batteries, such as computer display 1200mwh when, in fact, batteries are 1400mwh of power (which you are invisible), after calibration, it became 1400mwh, this is not a power increase, but more accurate, because your batteries have good 1400mwh (do not know that we are understand)

(Calibrate the battery end)

A few surprises:

First: I bought the moli the 1900mah batteries, very cheap, only about 60% less than the price of the Sanyo batteries, but after several times I found the actual use of adequate capacity, as wear and tear only in the process of using the future in the know

Second: The dell x300 batteries supports automatic calibration function, that is not subject to a full charge and discharge, power will increase, according to 10% of the upgrade (the same as, and ibm), I changed before the core is 12800mwh, after a full discharged into 14100mwh, and theoretically I could be calibrated to 21000mwh batteries around

Third: After about, found that the x300's battery 11.1V 1900mah, 14.8V 1900mah and 14.8V 4400mah varieties, is actually a strange dual voltage support, free after the 1900mah 14.8V must Gao Ge's to study about.

At present dell gd761 Battery calibration has been done twice, back to 16000mwh about electricity, I have to stop the depth of discharge, and after doing it a last resort, and now will not be meaningless calibrated.

DC-stable power supply can be classified according to customary chemical power, linear stability and a stable power supply and switching power supply, they also took with a variety of different types: Chemical Supply
We normally used for dry batteries, lead-acid batteries, nickel cadmium, nickel hydrogen, lithium-ion batteries are of this kind, each with advantages and disadvantages. With scientific and technological development, but also produced intelligent battery; in rechargeable Acer 1600 Adapter materials, the United States found the development of a manganese iodide, using it to create cheap, small, discharge for a long time remained after repeated recharging good performance of environment-friendly rechargeable battery.
Linear stability of power supply
Linear stability of power supply have a common characteristic is its power management devices to adjust the work of the linear region, by adjusting the voltage drop between the pipe to stabilize the output. Adjust the static loss due to pipe large, need to install a large radiator to heat it. And because work in the frequency transformer (50Hz), so greater weight.
Such power advantage is that high stability, ripple, high reliability, easy-made multi-channel output continuously adjustable finished product. The disadvantage is that bulky, more cumbersome, efficiency is relatively low. Such a stable power supply there are many, from the output properties can be divided into power supply and steady flow of power and sets regulation, steady flow in a steady flow of the regulator (bistable) power. From the output of view can be divided into fixed output power supplies, band switch-adjusted and potentiometers continuously adjustable in several. Instruction pointer from the output can be classified into the instructions on the type and digital display-type type and so on. Switching DC Power Supply
A different and linear regulated Acer 1680 Adapter supply is a class of stable power supply Switching DC Power Supply, and its circuits are mainly single-ended flyback, single-ended forward type, half bridge, push-pull and full bridge. It is the fundamental difference and linear power transformer is that it does not work in the frequency instead work in Shiqian few Hz to several megabytes Hz. Functional control is not working in saturation and cut-off areas that the switch state; switching power supply hence the name.
Switching Power Supply has the advantage of small size and light weight, stable and reliable; disadvantage relative to the linear power supply ripple is large (typically ≤ 1% VO (PP), good can be achieved more than a dozen mV (PP) or smaller ). It could be from a few watts of power - are products of several kilowatts. Price of 3 yuan - more than ten million yuan / W, the following general categories used to introduce some switching power supply:
①, AC / DC power supply
Such power, also known as a power supply - AC is AC, DC is a DC, it is to obtain energy from the power grid, after a high-voltage rectifier filter to get a DC high voltage for the DC / DC converter at the output to obtain one or a few stable DC voltage power from a few watts - a few kilowatts are products for various occasions. Model specifications of such products are numerous, according to user needs may be, in a communication power supply (AC220 input, DC48V or 24V output) also fall into this category.
②, DC / DC power supply
In a communication system also known as the secondary power supply, which is a power supply or DC battery pack to provide a DC input voltage, through the DC / DC conversion after the output DC voltage by one or several. ③, communication power supply
[6] communication power of their essence DC / DC converter power supply, but it is generally DC-48V or-24V power supply, and use back-up batteries for DC-powered backup, will transform into a DC supply voltage of the circuit operating voltage, in general it points the central power supply, power supply three kinds of hierarchical power and veneer, the latter is the highest reliability.
④, the radio power supply
Radio power input AC220V/110V, output DC13.8V, power from the power supply units, depending on hundreds of security are a few security products. To prevent the impact of AC grid power station, while the need for battery as a backup, so In addition to the output of such a 13.8V samsung DC Acer 5920 Adapter supply voltage, but also has the function of automatic conversion to charge the battery.
⑤, Module Power Supply
With the rapid development of science and technology, the power supply reliability, capacity / volume ratio increasingly high demand for power supply modules are increasingly displaying their superiority, it is the work of high frequency, small size, high reliability, easy to install and portfolio expansion, Therefore, more and more widely used. At present, although the current domestic production of the corresponding module, but failed to catch up with the international standard production techniques, failure rates are higher.
DC / DC module power supplies present, although more costly, but the application of the long product cycle, the overall cost point of view, in particular, due to system failure caused by high maintenance costs and goodwill impairment of view, the choice of using the power module is cost-effective cost-effective in this is also worth mentioning that Roche converter circuit, and its outstanding advantage is that the circuit structure is simple, efficient, and the output voltage and current ripple value is close to zero.
⑥, special power supply
High voltage low current power supply, high current power supply, 400Hz input Acer aspire 1400 Adapter AC / DC power supplies, etc., can be attributed to this category, can be selected according to specific needs. Switching Power Supply price is generally 2-8 yuan / W special low power and high power supply prices slightly higher, up to 11-13 yuan / watt.