Notebook battery review

Intel Turbo Boost is a technology designed to save energy, created by Intel to its latest processors and i5 i7 series, in both mobile and desktop,even 395789-001 battery. Clearly it is above all in laptops such a solution becomes interesting, contributing considerably to the perennial search for more lasting autonomy.

The principle underlying the functio

ning of Intel Turbo Boost is very simple. Intel i5 \ i7 consist of four cores, which become virtually i7 Hyper Threading 8, whose work simultaneously generates an output that is unnecessary for many types of applications (which are the most common, how to navigate, use a word processor, etc.).

So it is unnecessary for the four core i5 \ i7 work always: to maximize energy savings, it is better that the core will activate and inactivate as the real demands of computing power at the time.

Intel Turbo Boost takes care of that. When using applications less exorbitant level of hardware resources, Intel Turbo Boost deactivates three of the four core i5 \ i7, while raising the core clock frequencies of the one who remains in occupation, which is more than sufficient to manage everything in such situations as Acer Travelmate 2400 battery.

Possible configurations are: Normal, with all four cores operating at clock rates declared processor 4C Turbo, with four cores in action and slightly overclocked, and <4C Turbo, where a lower number of cores is active, but even overclocked.

Intel Turbo Boost is therefore a technology that can intelligently manage an overclock dynamically adjusted automatically in relation to the actual workload of the CPU.

In the particular case of laptops(laptop battery), the importance of Intel Turbo Boost is realized in the ability to create powerful notebook(notebook battery), suited to gaming and professional applications, without sacrificing too much autonomy.

How to measure the power consumption of notebook battery

The Original article posted in http://www.laptops-battery.co.uk/blog/

Why laptop battery capacity reduce as time? Why battery calibration can improv battery capacity? How to charge the battery correctly? All above probelm are related to battery power consumption. Open circuit voltage measurement … … Coulomb measurement, impedance measurement, what are these terms mean? Here we will simply introduce all of them!

Whether it is the out nickel-metal hydride batteries, lithium-ion Dell laptop battery, or not commonly used lithium polymer batteries, and even coming silver zinc batteries, are equivalent to the a storage warehouse of electronic power. The differences between them is that the way out of the Treasury, the volume of stocks it. In laptop batteries, there is a power manage center - power consumption chip, it is the management of power measuring, charging and discharging managing.

In the measurement of battery technology, there are four kinds common method (open-circuit voltage measurement, Coulomb calculation, impedance measurement, integrated look-up table method), but not all IBM laptop battery used only one method, usually using a combination of methods to one of the main method of supporting the rest of the way computing power. The first one is the open circuit voltage measurement, this method is that measuring the battery voltage under static values to calculate the remaining battery capacity, but as a result of stationary lithium-ion battery voltage and remaining capacity relation is non-linear, so this method measured valueis not accurate, the vast majority of mobile phone batteries are calculated using this method;

The second one is Coulomb calculation, the method is by measuring the laptop battery charge and discharge current, the current value and time value After the calculation of product integration has been carried out by filling the battery into the power and the release of electricity, Coulomb’s method is a accurate method of calculating power;

The third one is the impedance measurement, measuring its resistance to get the remaining battery capacity value; the fourth is a comprehensive look-up table method, by setting up a related form, the voltage, current, temperature and other parameters, you can query the remaining battery capacity.

Therefore, in addition to the internal structure of the battery batteries, there are control chips, the chip which contains 1-2 kinds of batteries power measurement method of calculation, and a charge-discharge protection circuit. HP laptop battery manage program had been setted in the system, and through access to the chip-driven interface, and then set on the battery management.

So, why the Toshiba laptop battery will become weak, but the battery calibration can improve the battery capacity? Notebook battery 6-cell and 4-cell, means that there are a number of battery cells inside the battery. The batteries cells conenect together, the battery capacity reduce reason is that: all the batteries quality and discharge rate can not be in the same level. After discharge, one battery cell capacity in substantial reduction, in order to maintain voltage stability, the battery management chip will be according protection of core power as the “bucket principle”, so after the electricity charge will decrease.

Battery calibration is to balance the multiple batteries cells, the Apple laptop battery cells own internal resistance can not be completely consistent, the large internal resistance battery will shoulder the larger current, and its own consumption more than the other batteries. So regular battery calibration is necessary - it can balance the burden of multiple batteries work and prolong the whole battery life.

The article is from : laptop battery blog

Notebook battery Power saving techniques

In fact, how to make good use of Laptop battery, how to extend the laptop battery using time and life is problem for all notebook users, a problem. There are many laptop battery using tips in our daily life that we shoule know in normal use and application.

(A) quick to enter the dormant state

Do not use the notebook computer for saving latitude D820 battery power, we can set the power management program, let the system enter hibernation after a period of time, but it must wait a few minutes, is there a way to make the notebook computer system enter the sleep state immediately ?

There is a dormant easiest way in Notebook computer system : directly turn off the screen, you can make laptop to sleep immediately and effectively conserve battery power. When you need to use the laptop, only opening screen, the system will automatically return to the state before the operation.

(B) power-saving screen mode

Laptop TFT screen is the largest component of power consumption, in order to reduce power consumption, notebook computer manufacturers have devised ingenious schemes, in all the general advise are following tips: reduce the screen brightness, turn off the screen.

In some notebook power management as 40Y6795 40Y6797 40Y6799 settings to customize the brightness of the screen, the majority of notebook computers by a specific shortcut screen brightness adjustment, generally 6 to 8 level brightness adjustment.

(C) Carry out energy-saving settings

As desktop using the AC, most people may not take attention to energy-saving features, but to laptop user who must use Discount laptop battery for mobile use, the use of energy-saving features should be important. How to design computer hardware more energy-efficient, this is not a user problem. All us can do is set up the effective use of energy-saving options on the computer.

There are two energy-saving settings need to adjust the user: First, in the computer’s BIOS setup program on the energy-saving mode in the settings; the most important thing is there are many in the operating system and operation of energy-saving settings. Computer system in the practical implementation of it, Windows system should take precedence over energy-saving settings in the CMOS settings.

1. BIOS settings of the energy-saving

In the CMOS settings,for example PCGA-BP2V PCGA-BP4V have a large “Power Savings”, which can choose to “Maximum Battery Life” and “Maximum Performance” and many other options. “Maximum Battery Life” is the default setting of the energy-saving mode. Notebook computer model has several energy-saving state, such as the Idle Mode Idle Mode, Standby Mode standby (wait) mode, Suspend Mode flying (sleep) mode. Notebook computer these settings, are able to regulate power consumption, mainly in the computer to enter the energy-saving state, the timely closure of the system without the use of equipment.

Such as when waiting to close the display and hard disk; dormant, apart from the display and hard drive shut down, but also can save the contents of memory to the hard disk, the basic maintenance of the entire computer system shut down state, once activated, or restart your computer, desktop will be accurately restored to pre-hibernation state. Energy Saving in the CMOS settings, set up mainly to enter the Idle Mode from Standby Mode in Standby Timeout time set by the Suspend Mode to enter the Standby Mode of the time Suspend Timeout. Notebook Phoenix BIOS of most use. Different energy-saving BIOS settings may be somewhat different, we should carefully read the screen prompts.

2. Windows in the energy-saving settings

For general users, in the Windows system management for energy conservation may be a better understanding of the operation simpler. Windows help file, in the “management hardware and software” under the entry, two notebook computers with the contents of the relevant energy-saving: “the management of energy consumption” and “the use of portable machine” in the “management of the power portable machine.” Energy-saving settings in Windows, should read it.

In the Windows “Control Panel”, click “Power Management”, you can open the “Power Management Properties” dialog box. In the “Power Management Properties” dialog box, should be “power scheme” is set to “portable / laptop” (Using 92P1101 92P1102 08K8193 08K8192 92P1087 92P1011 battery) and reasonable arrangement “system waiting for”, “close the Monitor,” “turn off hard disk” option, etc. . Different computer can control the options there will be some differences, the new factory and the latest computer software will be more workable options and detailed computer settings should be based on their functions and help files for Windows.

In addition, if your notebook computer with built-infrared port, close it when not in use, you can extend notebook battery life.

Notebook battery Maintenance New opinion

What are the laptop battery maintenance mode? What is the use of laptop battery maintenance of the taboo? Notebook battery maintenance of books in the end should be pulled out, pulled out if the power of how to do? Notebook battery maintenance of good access to the longest time? See below, it will know.

Notebook battery life is longer, often dissatisfied with sufficient, or even show damage, if the laptop battery maintenance of peace have not done enough good, then more accelerated the aging batteries! It is necessary to observe in the use of some maintenance tips. Whether you are using a notebook lithium battery as A1008 or nickel-metal hydride batteries.

As far as possible to the battery charge after the exhaustion of the basic (power less than 5%), which is to avoid the battery the best way memory effect. In fact, the lithium-ion battery has some memory effect, Ni-MH battery is more than just much smaller. However important to note that charge when the time is too long to avoid the general control within 12 hours. Notebook battery as A1061 maintenance free with the use with the filling!

Notebook battery life is not determined by the length of time, but by the number of charge and discharge decisions. This is the importance of maintenance of notebook battery - Li-ion notebook battery (M8403) life by the number of charge-discharge decision! If you are using a laptop when the battery has been installed on the notebook instead of taking down, even if the machine shut down and removed AC power, the battery would not like to imagine that as you have maintained a state of full power.

Used because the notebook battery is a Into a control circuit, even when the computer is shut down power consumption. After I connected to AC power, when battery power is not full, so it will start charging. In this way, when the power turned on or off, your laptop battery will repeatedly charge and discharge and shorten VGP-BPS5A battery life, this is the laptop battery maintenance bogey.

To this end, in the use of external AC power supply when the battery pulled out the best. Moreover, the laptop battery if exposed to heat their state will have an impact on life expectancy. Laptop battery for long-term maintenance of non-use, please red discharge at least a month to ensure that the activity of the battery. At the same time, when the battery in the custody of a problem we must pay attention to 8N544 PA3399U-1BRS battery.

That is, the vast majority of laptop battery currently used in lithium-ion batteries do not use if the long period of time, then, often prone to the phenomenon of excessive discharge, may no longer be able to charge a notebook battery. This is the laptop battery maintenance of a free! In order to prevent excessive battery discharge, in a state of semi-rechargeable battery stored in a cool place, and then once every six months, and then half of its electricity to the state of charge. Notebook battery maintenance free Latitude D800 battery storage for too long, as well as the battery over-discharge damage to the battery!

In addition, the impact of notebook battery life of factors including the use of the environment temperature (30 ℃ suggested that the use of the following), storage inspiron 8600 battery and battery temperature suffered shock size. In the use of laptop batteries after a certain period of time will be aging (no matter how maintenance can not be avoided!), As demonstrated by the internal resistance become larger, in charge when the voltage rise faster, so it is easy to charge control circuit has been found to have full capacity is of course also declined.

Laptop battery will be calibrated to deal with aging is an effective way to the laptop battery, which is many years laptop battery maintenance of a more commonly used! However, only a small number of notebook batteries have a dedicated calibration software. If your notebook does not discharge the exclusive use of the software, then the battery can be carried out in accordance with the maintenance of the following steps:

Disable the screen saver;

• In the Windows Power Management power scheme will be set to “always open”;
• General tab in the warning “insufficient power warning” is set to 10%, the operation is set to “no operation”;
• will be “a serious power shortage alert,” set to 3%, operating as a “wait”;
• the screen brightness to the maximum;
• confirm all the windows closed, and the preservation of all data prior to the work;
• confirm inspiron 630m battery after more than 80%, unplug the power and all external equipment.

Discharge after the end of the notebook will automatically shut down after the power plug so that the notebook charge, this process can be repeated 2 to 3 times the battery to enable continuous low current discharge, which discharge the state in our day-to-day use it is impossible achieved, the effect of discharge and those dedicated basically the same software.

Notebook battery fully charge and discharge error

Notebook computer equipped with the original battery, after a period of time after use, there will inevitably be the case of standby time. Some users said: “depth with repeated charge-discharge method, be able to resume the performance of the battery, thereby extending the battery life.

To a correct understanding of this issue, start a notebook about the type of laptop battery used. As we all know, in 1995, before the production of notebook computers are basically used to power nickel-cadmium batteries. In the use of such batteries, if not the correct way of charging and discharging, the battery will have a “memory effect”, thereby reducing the battery’s actual capacity, the elimination of this “memory effect” is the best way to repeatedly charge and discharge depth manner. With the emergence of nickel-hydrogen batteries, battery capacity has improved significantly, but the “memory effect” did not completely eliminate the shortcomings.

In recent years, lithium-ion batteries in notebook computers has been rapidly increasing, largely as a result of lithium-ion batteries have been the elimination of the “memory effect” problem, it is used repeatedly to restore the depth of latitude D800 battery charge-discharge performance of the method is not applied. But why lithium-ion battery capacity or the will to reduce the problem? Have a fundamental reason for this situation is used in notebook computers and the original lithium-ion battery in the built-in battery management systems.

Battery Management: At present, in notebook computers, almost all adopted the “battery management” and “charge-discharge control” of two chip-level management systems. The “battery management chip” placed in the notebook computer itself, the chip registers in the memory of the computer used in the capacity of lithium-ion inspiron 8600 battery, operating temperature, ID serial number, charge-discharge state, the cumulative number of charge-discharge and other important information. In the use of these data, the need to constantly refresh the actual situation. The battery built-in “chip control charge and discharge” the most important role is to monitor and control the battery charge and discharge the entire process and be documented.

Charge: Lithium-ion rechargeable battery the whole process is divided into “fast charge constant-current” and “reduced charge constant current” two stages. The so-called “constant current fast charge” means charge has just begun, the charge current and charge voltage to follow a fixed battery terminal voltage gradually increased until they reach their nominal voltage of the charging method. When the inspiron 630m battery terminal voltage has reached the standard value, the controller will automatically turn into “reduced charge constant current” phase, when the charging voltage will no longer continue to rise, while the charge current to follow the battery capacity is rising gradually diminishing, and eventually reach zero, so they all completed a GK479 GD761 battery charging process.

At the same time, the charge generated by the process of charging voltage, current and time data curves will be recorded in the VGP-BPS5 battery’s “charge-discharge control chip” of the memory. “Battery management chip” is through access to th

ese data, calculated by the sample data such as battery capacity, which is, in Battery Information in numerical Wh read.

Fixed: After repeated charging and discharging the HP DV2000 battery after use, its built-in chip in the charge-discharge data will of course be changed. If at this time “battery management chip” has no chance to re-read the newer, more complete data, it calculated the battery capacity will not be accurate of course, to the user the feeling seems to be reducing the capacity of the Satellite A100 battery, and the fact that the actual capacity of the battery has not really reduced. Some bring their own brand of rechargeable laptop management software working principle, the process is in charge refresh “charge-discharge control chip” memory of the data, thus ensuring the “battery management chips,” the correctness of calculations.

A close look if you have the use of laptop manuals, will be found that “a month in the use of computer time, should make a full laptop battery charge and discharge operation” note. Its main purpose is to use the depth of charge and discharge the way to amend the charge and discharge control chip register data in the curve so that the battery charge control and battery nominal capacity and the actual situation, as a result the correct value of the battery capacity.

The truth about notebook battery

It’s one of the most important and least understood parts of your notebook—and it provokes so many unanswered questions. Why do laptop batteries gradually lose their ability to hold a charge? Why does it takes longer for a charging notebook to go from 80 to 100 percent charge than it does to go from zero to 80 percent? What’s the difference between a three-cell and a six-cell battery? Rather than shrug our shoulders for another day, we demanded answers from two experts, Matt Kohut, worldwide competitive analyst at Lenovo; and John Wozniak, Ph.D. distinguished technologist at HP.

LAPTOP: At what point during Presario 2100 battery life cycle does a typical notebook battery last longest?

Kohut: The industry average is about 30 percent degradation per year. You’ll probably start to notice after about six months.

John Wozniak: Batteries tend to fade pretty quickly over the first 10 or 20 cycles, and then capacity levels off.

How long does a typical notebook battery last?

Kohut: Roughly, 350 charge cycles. A cycle is cumulative use that reaches 70 percent degradation, or seven times when 90 percent of the battery capacity was used.

What causes a battery to lose capacity over time?

Wozniak: Think of a Presario 2500 battery as having pores, where the electrons flow back and forth between the cathode and the anode. When those pores get clogged, you can’t move the electrons as efficiently anymore. Then the lithium gets bound up on one side or the other, and it no longer contributes to the movement of electrons. It gets backed up.

Do you need to build up a battery memory, or condition it, to get the best performance?

Kohut: This was true in the lithium-metal hydride days, however, with a standard lithium-ion battery, you just need to make sure you charge it fully. Most batteries ship from the manufacturers with an 80 percent charge.

Conditioning, meaning draining the battery to zero and then charging HP ZE4400 battery fully while Windows monitors it, resets the curve. It doesn’t prolong the battery’s life, but it improves accuracy [of the battery monitor]. Over time, the accuracy drifts in the Windows program that measures battery life. That is why it can say that you suddenly went from 80 to 20 percent in five minutes.

How much can you trust the charge status that Windows gives you?

Kohut: If the battery reports full, Windows says it is full. Windows periodically checks the battery, but it is more of a thumbs-up/thumbs-down than a real assessment. Windows is crude; trust it if it’s full, trust it if it’s empty. But know that it doesn’t have the communication to know that the Pavilion DV2000 battery degrades over time. We recommend the Lenovo Power Manager, because it has a lot more smarts. It knows the status of each individual cell, whether it’s balanced, imbalanced, charging, not charging, etc.

John Wozniak: If the BIOS is written correctly, Windows is really accurate; within 1 to 2 percent. The problem is how often it updates.

When charging a notebook, why does the last 5 to 10 Percent take longer than the first 85 to 90 percent?

Kohut: If the EVO N400C battery is low, we will charge it at a faster rate. But when the battery fills up, we back off, because it’s the last bit of charging that causes the issues to form. Other vendors that do rapid charge still back off around the last 10 percent. Dell, for example, does fast charge, pedal to the metal, from zero to 80 percent. Then backs off and coasts into the finish line. Lenovo starts fast, but backs off more and more through the entire charge. This allows for a more even rate of charge. It takes longer overall, but it helps the battery’s longevity.

Some notebooks won’t start charging unless the battery is below a certain level, SAY, 95 percent. Why is that?

Kohut: Charging it to 100 percent every time adds cycles that cause the inspiron 1525 battery to wear out faster. In the typical office situation, you’re plugged in 100 percent all day. Then you take it home, and plug it in again, after losing maybe only 2 percent. If you charge to 100 percent again, you start adding cycles that wear out the battery because you’re initiating a full charge cycle. The thought behind our process is that unless the battery gets below a certain percentage, don’t put it through the stress of charging.

How important is the number of cells in determining battery capacity?

Kohut: The three-, six, nine-celled battery is shorthand for explaining how much laptop battery life a machine has, but watt-hours hours determine capacity. The average consumer has no clue that a nine-cell battery has around 84-watt-hours of power, they just know it’s a nine-cell. One of Lenovo’s competitor’s has two six-cell batteries—a 53-watt-hour and a 47-watt-hour. The second doesn’t deliver the same capacity. To really understand how much power a battery will hold, you need to look at the watt-hours.

Some vendors are advertising two- or three-cell batteries that claim a longer life than six-cell models. Is that possible?

Kohut: There is a fine line. Ibook G3 Battery VGP-BPS2C capacity has gone up in the past few years by making the cells more energy-dense. There used to be 2 amp hour (Ah) cells, but now cells go up to 2.9 amps. If you can control the higher concentration of energy in the smaller space, it’s not a problem. But sometimes this results in violent reactions such as overheating and over-charging. [If a vendor claims its battery lasts a long time with fewer cells,] you want to ask how many watt-hours the pack holds, and about the kind of cells (2.6, 2.9 Ah, etc.).

Should consumers trust third-party batteries?

Kohut: We’ll warranty our own batteries, but if you put a third-party battery in, you void the warranty. That’s because there are good Powerbook G4 battery manufacturers and there are bad ones. Some of the good ones are Panasonic, Sanyo, and Sony. A less reputable company will buy whatever is cheapest, and just drop it in there. The reason a lot of the battery incidents occur in this industry is because of quality control.

We always say that you are taking [the life of your notebook] into your own hands when you buy a third-party battery pack. Yes, you are saving some money up-front but you don’t have the backing of the company behind it.

The article is from : www.laptopmag.com