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The article comes from http://www.mylaptopbattery.co.uk/blog/2009/08/30/how-to-play-laptop-battery-greatest-potential/

 Activation of a new battery
Does not require the laptop battery for 10 hours of rechargeable battery to activate the activity of the normal charge-discharge method for activation.
The proposed method: According to the available information suggests that the activation of cell work should be completed at the factory, and DELL laptop battery factory with a capacity of some natural wear and tear in order to avoid damaging the battery. Activation of the battery should be in no circumstances to protect the circuit can be with its own lithium battery circuit protection circuit, the purpose of this piece of the circuit is to avoid excessive battery charge and discharge, generally filled with the battery after charging when the indicator light off , the battery can not be recharged into the electricity, and then you then plug the power plug to recharge the battery in the face of what use? Available from the battery can be seen on the status of the battery have any charge, another teaches you a simple way to be able to determine whether there during the battery charging, battery charging, when the phenomenon will have a fever, when the battery is full after one hour (power plug does not pull), you go try the battery to see if the battery is still warm not hot? The result is definitely cold, because the battery is not charging and discharging state certainly does not heat. Notebook makers at the factory will propose that a new battery for more than 10 hours. The author of this opinion, should be taken into account that some notebook manufacturers a new user in the new battery charge when not fully grasp the skills, simply so that they can directly charge 10 hours, so this should be the business of expediency dell FK890 battery,dell GK479 battery.
How to correctly charge
Most people said that the unnecessary use automatic shutdown and then charge, and do not arbitrarily charge. Are generally used when the battery needs charging when the computer prompted further charge, of course, prompts the time can be set, the default is to 3%.
I proposed approach with the majority of the people is the same. In fact, regardless of laptop use nickel-metal hydride or lithium batteries, these batteries are have a memory effect, and nickel-metal hydride batteries with memory effect is very obvious, but equally there will be lithium memory effect, but its memory effect smaller than the nickel-metal hydride Bale . There is no memory effect on lithium to say, only exaggerated and irresponsible business conduct in advertising, is totally misleading. Well, since the battery has a memory effect, it should be noted when charging point, as far as possible and then run out of charge, but do not have to deliberately say must use the computer to automatically shut down, so that although there is no harm in using them (because the laptop battery has a charge discharge protection and automatic shutdown in general has not yet reached notebook battery discharge protection standards), but you do not feel so tired? In fact, less than 3% of the charge in this way is very good, memories will certainly be the effect, compared to natural wear and tear, it should be nothing. As for the charge that they want to charge on the point of view, the author is completely disagree, and have already said, whether laptop battery nickel-metal hydride or lithium, which has a memory effect, if in this way then the battery life will be shortened dell 3R305 battery,dell Inspiron 2500 battery.
Unplug the battery when the external power supply is
Most people use an external power source, will the battery removed, only a few use an external power supply when the battery is placed above, but their brands are used in several international brand.
In fact, if the battery is removed, the conflict focused on the use of an external power supply when the battery is charging to the issue. We should know that the number of charging and discharging the battery life is directly related to the general lithium battery set the number of charging and discharging are fixed number of charge cycles only 400-600 times, specially modified products, but 800 times, once for each rechargeable batteries a step forward to retirement. The first argument is simply because they are afraid to use power, the battery will be conducted on the above charge, not only increase the number of charge cycles, but will also cause overcharge. The second view is that the battery is full power on the computer in the use of an external power supply will not recharge.
In fact, both views have their right side, but also the wrong place. Because it is only the views expressed by individuals is not very comprehensive, after I investigated, many notebook manufacturers are taking into account the vulnerability of the battery, and the product added to the battery protection technology, and thus the corresponding different brand laptop batteries charging protection technology is different, like some large companies do very well in this regard, such as: IBM, Hewlett-Packard, Toshiba, Compaq, etc.. One of the most thoughtful consideration is that IBM, IBM’s notebook computers can detect the battery discharge situation, ThinkPad notebook battery only less than 95% of the time will automatically recharge. This can play a very good protective effect on the battery, and now many other manufacturers have followed suit dell Inspiron 3700 battery,dell Inspiron 3800 battery,dell Inspiron 4000 battery.

So, like the battery, you do not have the time to use pull down, because only when the capacity less than 95% of the time it would charge. But even so, if you are prolonged use of computers, or will the battery be removed to compare the good, because the long-running laptop heat generated when the battery will cause some damage. However, some other “little brand” laptop batteries, may not enjoy such treatment, because it has not done inside the battery protection technology. I like to use a certain brand of notebook computers, if the fully charged battery on the above, when using an external power supply was confirmed when the first charge about electricity, because the battery storage, will have wear and tear, can not reach 100%, while not 100% as long as , power supply connected to the charge. Each access to external power supply is equivalent to charging the battery once, although only a small charge will be the time. Therefore propose that we use when the machine according to their own circumstances, look at the laptop manual, choose whether to use an external power supply when the battery removed.

The article comes from http://www.mylaptopbattery.co.uk/blog/2009/08/30/the-misunderstanding-of-laptop-battery-repeatedly-charge-and-discharge-deeply/

 Notebook computers equipped with original equipment batteries, after a period of time after use, there will inevitably be of standby time. Some users said: “The depth with repeated charge and discharge method, you can restore the performance of the DELL laptop battery, thereby extending battery life,” I think this to be relatively one-sided.

To understand this issue correctly, may start with the battery type used in laptop computers start with. As you know, before 1995 the production of notebook computers are basically nickel-cadmium batteries to power. The battery is in use, if the charge-discharge method is not correct, the battery will have a “memory effect”, thereby reducing the battery’s actual capacity to eliminate this “memory effect” is used repeatedly in the best way to charge and discharge depth way. With the emergence of nickel-metal hydride batteries, battery capacity has significantly improved, but the “memory effect” did not completely eliminate the shortcomings.
In recent years, lithium-ion batteries in notebook computers has been rapidly growing popularity, due to lithium-ion batteries have basically eliminated the “memory effect” problem, it is used repeatedly to restore the battery depth of charge and discharge performance of the method no longer applies. However, lithium-ion batteries why I still appear to reduce the capacity of the problem? The root causes of that situation, is used in notebook computers and the original lithium-ion battery built-in battery management system in the making.
Battery Management: At present, in notebook computers, almost all adopted the “battery management” and “charge-discharge control” two kinds of chip-level management system. The “battery management chip” placed in a notebook inside the chip to store the register of the computer used in the capacity of lithium-ion batteries, working temperature, ID, serial number, charge and discharge status, charging and discharging the accumulated frequency of important information. The data information in the use of the process, according to the actual situation of continuously updated. The battery built-in “charge-discharge control chip,” the most important role is to monitor and control the battery charge-discharge process as a whole and be documented dell C1295 battery,dell GD761 battery,dell TD347 battery.
Charge: Lithium-ion battery charging process of the whole, divided into “fast charge constant-current” and “constant-voltage charging current decreasing,” two phases. The so-called “constant-current fast-charge” means a charge has just begun when the charge current is fixed and the charge voltage to follow the battery terminal voltage gradually increased until it reaches the nominal voltage charging. When the battery terminal voltage has reached the standard value, the control chip will be automatically transferred to the “Constant current charge decreasing” phase, this time charging voltage will no longer continue to rise, while the charge current is to follow the battery capacity is rising gradually decreasing and finally reached zero, and so will complete the entire battery charging process.
In the meantime, the process of charging the charge arising from voltage, current, time and other data curves will be recorded in the cell are known as “charge-discharge control chip” in memory. “Battery Management IC” is through the retrieval of these data, and is calculated by sampling data such as battery capacity, which is what we read in the Battery Information where the value of Wh.
Fixed: After repeated charging and discharging the battery after use, its built-in chip in the charging and discharging of data will of course change. If at this time “battery management chip” has no chance to re-read the newer, more complete data, it calculated battery capacity would of course not accurate, and to the user the impression that the battery capacity has decreased, but the reality on the battery capacity and there is no real reduction in the actual. Some brands of notebook computers comes with charging management software works, that is, the process of charging Refresh “charge-discharge control chip” in memory of the data, thus ensuring the “battery management chips,” the correctness of calculations.
If you take a close look over the use of laptop computers instructions, you will find among them the “computer in use one month later, the battery should be to make a full charge and discharge operation” instructions. Its main purpose is to use the depth of charge and discharge a way to modify the charge and discharge control chip registers inside the curve data, so that the battery charge control and the nominal capacity and the actual situation of the battery corresponds to arrive at the correct battery capacity values dell HD438 battery,dell KD186 battery,dell GD761 battery,dell Y9943 battery.

The article comes from http://www.mylaptopbattery.co.uk/blog/2009/08/30/re-understand-notebook-lithium-battery-maintenance/

 For notebook computers, the battery can be said to be a more important component, its performance is directly related to notebook computer environment in the absence of power in the ability to work. The laptop battery can be considered a public component in another letter of consumables, it involves the laptop battery maintenance and reasonable use of the forum is also frequently discussed issue. With regard to laptop batteries at the time set aside to save much more than what should stay and whether the use of AC power when you remove the battery problems are not always what a unified answer. I watch a lot of foreign masters in the experience, it will sum up their general point of view, for your reference. After reading this article, you will find many of their claims and receive the recommendations of our universal existence of a number of differences in the number.

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Li-ion batteries in a life cycle in general can be 300 to 500 times charge-discharge. So many people think that, as long as using less battery, so that you can to a certain extent, played a role in extending battery life. But they did ignore the original battery that the physical nature of the end when the battery off the assembly line, it’s internal life, the clock will then start walking. So even if you do not set aside the battery, lithium battery life was only two to three years you can come to an end of. Battery capacity caused by reasons for the decline was due to oxidation caused by the battery internal resistance increases. When the electrolytic cell resistance reaches a certain point, although this time the battery still be full of electricity, but the battery has been unable to release the stored electricity dell Latitude D600 battery,dell Latitude D610 battery.

Caused by lithium batteries is the speed of this aging temperature and set aside when the charge state of preservation decision. I will give a table to illustrate the different situations of these two factors, the impact on the battery capacity.

Can be seen from the table, high charge state and the high temperature accelerated the decline in battery capacity. Therefore, if possible, as far as possible, after the battery charge to 40% placed in a cool place to save. This allows the preservation of a long period, the battery protection circuit is in its working state. And if the battery is fully charged, will be placed at high temperatures, which will cause great damage to the battery, the table has also been seen, charge 100% in the 60 ° C environmental conservation, 3 months after the battery capacity fell by 40% . Therefore, how to save the battery solved the issue, but also leads to another focus of everyone has been argued, that is when we use a fixed power supply when there is a need to remove the battery? Before the resolution of this question let us first analyze the use of fixed power supply when the battery placed in a computer environment in which … … at this time due to charge notebook computers role in protection circuit, so that the battery remained at 100% of full power state, and this When the battery in which the ambient temperature between 25-30 ° C, at least, if the hot weather, this temperature will be higher, then from the table, you should be very natural to come to a conclusion that it is so to do this would actually damage the battery, causing a decline in its capacity.

But despite the use of laptop computers, high-temperature will bring damage to the battery. But Qudiao battery, use only a fixed supply, there will still some danger that dust and moisture will cause some damage to the battery, while the use of notebook computers in order to avoid a sudden power notebook computers may cause damage, so Manufacturers generally warn users not to remove the battery. Of course, this result will be naturally imagined, your battery as often in such a relatively poor environment, it will not be long over, and then you will need to go to repair center to replace the battery, this way, the benefit of course, is a manufacturer of dell Latitude D620 battery,dell Latitude D800 battery.
Finally we spotlight a lithium battery that is exactly how a reasonable charge and discharge this issue. For the lithium battery is best for partial discharge, rather than fully discharged, and to as much as possible to avoid frequent full discharges. Regular battery too low discharge of the result can only be scrapped so that the battery in advance, because if the battery into every cell of 2.5 volts below the battery’s internal safety circuitry will be switched on, this time the battery will become some bad spent. Therefore, in order to avoid such situations from occurring, do not save the battery power before its release was erased, but rather a number of electric charge in the store before, and again before the first fully charged.
All in all, in order not to make your premature loss of the role of the battery, then the use of normal, you should try to comply with the following principles:
A. avoid full discharge, and often for lithium batteries. The repeated arbitrarily rechargeable lithium battery damage is very small, almost negligible.
B. will need to keep hold of lithium batteries placed in the shade, remember not to put in the refrigerator. Avoid placing hot car, such as a long time to save the battery charge to 40% in place.
C. most of the time if you are using a fixed power supply, please remove the batteries placed in the shade.
D. no need to purchase spare lithium batteries for storage, so this piece is actually a waste of battery.
Battery is brought to use, as long as the attention to rational use and preservation methods, there is no need to care for their excessive, making it possible for its owners contribute more to performance is the most important dell Latitude D830 batterydell Latitude X300 battery.

Tracking back: http://www.batteriesshop.co.uk/batteries/2009/07/15/discharge-battery-methods/

The purpose of a battery is to store energy and release it at the appropriate time in a controlled manner. Being capable of storing a large amount of energy is one thing; the ability to satisfy the load demands is another. The third criterion is being able to deliver all available energy without leaving precious energy behind when the equipment cuts off.

C-rate

The charge and discharge current of a battery is measured in C-rate. Most portable A31-S5 batteries, with the exception of the lead acid, are rated at 1C. A discharge of 1C draws a current equal to the rated capacity. For example, a battery rated at 1000mAh provides 1000mA for one hour if discharged at 1C rate. The same battery discharged at 0.5C provides 500mA for two hours. At 2C, the same battery delivers 2000mA for 30 minutes. 1C is often referred to as a one-hour discharge; a 0.5C would be a two-hour, and a 0.1C a 10 hour discharge.

The capacity of a battery is commonly measured with a battery analyzer. If the analyzer’s capacity readout is displayed in percentage of the nominal rating, 100 percent is shown if 1000mA can be drawn for one hour from a battery that is rated at 1000mAh. If the A31-S6 battery only lasts for 30 minutes before cut-off, 50 percent is indicated. A new battery sometimes provides more than 100 percent capacity. In such a case, the battery is conservatively rated and can endure a longer discharge time than specified by the manufacturer.

When discharging a battery with a battery analyzer that allows setting different discharge C-rates, a higher capacity reading is observed if the battery is discharged at a lower C-rate and vice versa. By discharging the 1000mAh battery at 2C, or 2000mA, the analyzer is scaled to derive the full capacity in 30 minutes. Theoretically, the capacity reading should be the same as a slower discharge, since the identical amount of energy is dispensed, only over a shorter time. Due to energy loss that occurs inside the battery and a drop in voltage that causes the A32-A8  battery to reach the low-end voltage cut-off sooner, the capacity reading is lower and may be 97 percent. Discharging the same battery at 0.5C, or 500mA over two hours would increase the capacity reading to about 103 percent.

The discrepancy in capacity readings with different C-rates largely depends on the internal resistance of the battery. On a new battery with a good load current characteristic or low internal resistance, the difference in the readings is only a few percentage points. On a A32-M9 battery exhibiting high internal resistance, the difference in capacity readings could swing plus/minus 10 percent or more.

One battery that does not perform well at a 1C discharge rate is the SLA. To obtain a practical capacity reading, manufacturers commonly rate these batteries at 0.05C or 20 hour discharge. Even at this slow discharge rate, it is often difficult to attain 100 percent capacity. By discharging the SLA at a more practical 5h discharge (0.2C), the capacity readings are correspondingly lower. To compensate for the different readings at various discharge currents, manufacturers offer a capacity offset.

Applying the capacity offset does not improve A32-S5  battery performance; it merely adjusts the capacity calculation if discharged at a higher or lower C-rate than specified. The battery manufacturer determines the amount of capacity offset recommended for a given battery type.

Li-ion/polymer batteries are electronically protected against high discharge currents. Depending on A32-S6 battery type, the discharge current is limited somewhere between 1C and 2C. This protection makes the Li-ion unsuitable for biomedical equipment, power tools and high-wattage transceivers. These applications are commonly reserved for the NiCd battery.

Pure menfolk is the absolute man, humane, generous attempts of man. But the love of beauty laptop battery since ancient times, heroes, heroes must also have tenderness side, there is something to keep pure menfolk purer and more gentle, then?

Today, Ms. assortment of PC-specific products are more and more men to buy PC products in the choice of space getting smaller and smaller. Despite this, pure menfolk have to fashion, but also to catch up with the trend of the times, so a strong performance, and appearance of the gentle elegance of small pure menfolk became a favorite. With the laptop showed their identity, thus making it cool, handsome enough, enough to pull the wind, how to make more face menfolk, the following dell Latitude CPX battery acer BTP-73E1 battery，acer Aspire 1680 battery recommendation on the look Xiaobian bar!

With Shucu’s in full swing, all PC makers have been gradually heating up the competition condition. Recently Shucu market, a 12-inch laptop - the Great Wall Colorful A92 shine! Its appearance using the current industry’s most advanced in-mold transfer process, prepare remarkable fashion charm, bright and clean the “skin” not dyeing Qian Chen, intake of each moment shine with breathtaking charm, like the star dressed in Chinese clothes swaying in the murder of film pose numerous health. White concentric circle embellishment aside a single vanity, passion revealed in the quiet, warm one-third of seventh are pure, people put it dell Latitude C600 battery down. Unique metal cylindrical shaft design, highlighting the international fashion design aesthetics, to show off eye-catching. Chimeric, including stereo speakers, providing the perfect sound quality user experience. The finishing touch of design ideas not only to wow people, and were red, white and black colors bring more fashion acer Aspire 1690 battery，acer Aspire 1300 batterychoices!

Configuration on the Great Wall Colorful A92 Intel P7350 processor, 2G of memory and 250G hard disk space large, equipped with WIFI wireless network card, and 130W-pixel camera, while supporting expansion of 3G. Comprehensive upgrade 6Cell battery capacity, improve laptop battery life, the unique “90-minute rapid charging technology” can be in 90 minutes, the battery charge to 90%, to people’s mobile life has brought greater efficiency, the user re - would not have a weak battery dell Latitude C610 battery life of the anxious. The unique “USB charging function”, in the shutdown case, with three USB interface can easily charge for mobile phones and other digital products, completely eliminates the go, mobile phones and other digital products without electricity for any inconvenience caused to our mobile Life has not had to worry about.

In addition, the Bright A92 continues the cool dark space A92 gene, using space science and technology in the same gravity acceleration sensor G-sensor. It can accurately sense changes in acceleration in the event of bumps, drops immediately to protect the hard disk. This way, users of the outdoors, while the use of the Internet can be no worries, do not worry spat between the damage caused by the hard disk, data is lost acer Aspire 1410 battery，acer Aspire 5560 battery.

 
The new Great Wall, from the appearance and configuration to the security of all outstanding performance, fully meet the work and entertainment needs. A variety of color dell Latitude C640 battery choices, so pure menfolk cooler, more handsome, more pull-wind, at all times, reflect the unique qualities of men. It is like the Internet present a general and convenient, but they have power. It is like the standard notebooks usually tough, but it is more concise fashion, will be able to have a 4999 yuan. Also, the Great Wall computers June 15 -9 15 period, the nationwide launch, “City Buildings about, surprise a summer” large Shucu events. In this promotion, the Great Wall computers ready for the lucky buyers in a super-large space big Libao Li Bao and fashion.

The Great Wall of small gentle beautiful and will dell 1691P battery bring out the pure menfolk of the bold, hardness and softness of the moment to bring jade-like intimate Application  acer Aspire 5920 battery，acer Aspire 5520 battery

When you have a Samsung laptop, it is important to be a responsible owner. This does not just mean taking good care of your laptop. This also entrails that when your rechargeable battery can no longer be charged, that it be disposed of in the proper way. Throwing away batteries is hazardous to the environment and there are many steps that have been taken to make it easy for you to join so many others to keep the world clean by recycling Samsung laptop batteries. Going green does not seem so much like a popular trend, as it is a new way of life and recycling plays a big role in this.

The average laptop rechargeable battery will last anywhere from two to four years. The amount of time that a Samsung laptop battery lasts will depend on the use and care of both the machine and the batteries. There are some ways that you can extend the life of your battery. It always helps to not run programs that you do not need. Many laptop users do not think about the amount of windows that they have open, but are not using, and how this takes away from the lifespan of the battery. Defragging your laptop on a regular basis also helps as does cleaning the battery with a cotton swab and a dab of rubbing alcohol on the area of connection. However, even if you do extend it life somewhat, there will come a day when it simply cannot be charged any longer. It is at this time that all laptop users are urged to be responsible and recycle and not to toss the battery out in the trash dell 3R305 battery,dell Inspiron 2500 battery.
When a battery is tossed in the trash, it creates hazardous material. When recycled, it is used to create other things, most commonly components from old batteries can be used to create new ones. When a produce is made from recycled materials that already exist, it always saves energy costs in comparison to manufacturing something from scratch.

Recycling Samsung laptop batteries is very easy and will not take up a lot of time. In return, you are playing an important role to keep the Earth clean. While it is tempting to just toss that battery in the trash, almost just as easy is to bring it to a recycling facilities.

To make it easy for the average consumer to recycle, many facilities have been set up as places where you can drop off your battery and they take care of the rest. Most of the time, these drop off centers are located in easy accessible places such as your local post office, book store, food store and other dell Inspiron 3700 battery,dell Inspiron 3800 battery.

This is a nationwide plan called Call2Recycle. This program is helping hundreds of thousands of people lend a hand to keep environment clean by recycling their Samsung laptop batteries in the easiest way possible. Since this program has been incorporated, more than forty million pounds of batteries have been recycled.

There is over fifty thousand drop off locations globally. The objective is to put together drop off center which will be as simple and easy as feasible. If you are not sure if there is such a place close to where you are, a quick search on the web will be able to let you know where you can go, and often you will find that it is along one of your normal routes when running errands. Alternatively, your local city hall or other such local government should be able to present you with a list of places dell Inspiron 4000 battery,dell Inspiron 4100 battery.

Toshiba laptop battery has packed in everything you need for watching HD content and then some. Whether you want to game or even get some complex Photoshop work done, the high horsepower combination of an Intel dual core processor, NVIDIA discrete graphics, and a healthy 3GB of RAM will handle just about anything you throw at it. You even get an ATI TV Wonder digital cable tuner, which combined with the HD-DVD drive and 1080p capable display will leave you in HD heaven. The laptop performed well while watching HD content and gaming, but the PA3191U-1BAS battery life wasn’t long enough to complete an HD-DVD movie.

At a price tickling the $1500 mark, the Tecra R10 is a bit more spendy than a close competitor like the Lenovo(PA3383U-1BRS battery) ThinkPad T400. It packs business class looks and comes loaded with almost everything you might need. While it may not be a lean and mean 12 or 13.3 inch form factor, the R10 is a very competitive with its 4.3 lb, 14.1 inch frame. Is it a bit more expensive than others hitting the mark? Yes - but I feel it’s a very good contendor to the Sony laptop battery and MacBook 13 inch battery out there to carry a good brand following from Toshiba.

The HP(Business Notebook 6710b battery ) HDX16 shines in this category, literally. The 16” LCD with a 1920×1080, 16:9 1080p resolution viewed on a glossy flush-glass display delivers stunning colors and brightness. The HDX is clearly designed for this, and while our model did not come with a TV tuner it can be easily customized to do so. Our model did come with a Blu-ray player, which looked beautiful on the LCD. The gloss does have the expected problems of glare, especially when outside, but the brightness is powerful enough to at least combat that to a degree, and indoors there is no problem. Angled viewing was also surprisingly good, with slight distortion only at extreme side and upper angles, although viewing from below is difficult.

Upgrading is always possible with Dell(Latitude D600 battery),which offers a wide assortment of Studio colors and designs. Beyond that, processors are available from the T4200 to the T9550, HDDs up to 500GB, WUXGA (1920×1200) resolution, and more. Unfortunately for potential gamers the 256MB GPU is as good as it gets, although that should be enough for the optional Blu-ray player to run smoothly. You can also get Vista Ultimate if you want, or at least some 64bit version of Vista, because it’s wasteful that our model came with Home Premium 32bit and 4GB RAM (32-bit operating systems can only utilize 3GB).

The table below is from Isidor Buchmann, President of Cadex Electronics, Inc. It presents some of the trade-offs in PA3534U-1BRS battery technology. The ideal battery would have high energy density (Cobalt), high charge rate (Phosphate) and a high Charge V Limit (Manganese). It also would be safe to use. For example, the cobalt Lithium-ion battery is subject to fires if it is charged at too high of a rate.

Batteries are all over the place, we can see it in all kinds of electronic devices. A laptop battery is an electrochemical device to convert chemical energy to electrical energy to provide power to our electronic devices. The chemical used in battery will pollute the environment heavily if the batteries are improperly disposed of. In this article will show you how to safety disposed and recycled a used battery.

The G45 seems more like a multimedia desktop replacement with its short Apple laptop battery life, but you’ll probably be tethered to a power outlet just to finish watching a movie, HD-DVD or not, from beginning to end. It’s hard to recommend the G45 because of its price and also since HD-DVD is a dying technology. You will find better options, such as PowerBook G4 17-inch battery which has a better configuration and is less expensive.