Digital battery

Carbon-Lithium Iron phosphate coating as effectively improve the performance of the method is now more and more attention. FRU 92P1141 40Y6799 Researchers have begun a systematic study of different carbon sources, carbon-coated layer of the composition of the thick layer of carbon coating on the effects of electrochemical properties of lithium iron phosphate. Zhao, Zhejiang University, recruits, etc. [33, 34] using polypropylene as an alternative to toner source of inorganic carbon, respectively FePO4 source of iron and Fe2O3 via solid state synthesis reaction step of LiFePO4 / Composites C, the results of research show that the decomposition at high temperature polypropylene carbon to effectively prevent the aggregation of grains LiFePO4 grew up in different Fe3 + iron source to be the product of the powder are slightly ball, the difference is very Small form, particle size of 300 ~ 600nm between the initial discharge capacity of both the difference is not large, was 160 mAh / g (0.1C) or so. Zhao advantage of this approach are summarized in [34]: the decomposition of polymer products (state of the H atom and C) have a stronger reduction of the state of carbon materials, which can reduce the temperature Synthesis and shorten the reaction time, polymerization decomposition of carbon atoms in the reaction system the state level has been decentralized, thereby achieving a uniform coating of synthetic products, and the formation of particles connected with each Other films of conductive carbon, solid-phase synthesis in the carbon film coated in situ reduces the particles of lithium iron phosphate has grown in speed, thus contributing to the particle size of cathode material for effective control. Doeff, etc. [35, 36] NF343 G1947 studied the different sources of carbon and the carbon coating in situ on the structure of the surface layer on the electrochemical performance of LiFePO4, they think of carbon fiber and carbon nanotubes can significantly improve the performance of lithium iron phosphate, LiFePO4 / C composite material performance also depends on the structure rather than the content of carbon and its electrochemical performance is strongly dependent on the surface of the carbon layer of carbon and graphite disordered in the proportion of parts in carbon, graphite carbon materials with high magnification report better performance, and As the conductivity of carbon graphite sp2 hybridization of carbon sp3 hybrid and electric is higher than the conductivity of carbon disordered, so that the electrochemical performance of LiFePO4 with the coating layer of carbon in the ratio of SP2/SP3 positive correlation, Figure 2 for LiFePO4 / C composite material and structure of carbon materials, the relationship between the electrical conductivity. Dominkó, etc. [37] using Sol - gel prepared with different thicknesses of the layer of porous carbon, crystallization good LiFePO4 / C content of carbon composites and the relationship between the thickness of the layer of carbon coated and found that the thickness of the coated carbon increases the carbon content (from 1nm to 10nm), the carbon content of 3.2% (for coated thick layer of carbon about 1 nm), the lens exit 1C of their specific capacity of approximately 140mAh / g. PB994A PP2182D

 

4. Important synthetic route of progress and industrialization

 

Materials of lithium iron phosphate, the synthesis methods can be divided into solid phase method and liquid phase chemical method in the very process of industrial production is generally the introduction of ball-milling, spray or freeze-drying [38], and granulation, crushing and screening or air and other means of improving process capability.

 

Synthesis of lithium iron phosphate of the track may be used by different sources of iron, or ferrous salt as a source of iron, ferrous salinization legitimate “and” source of law of ferric iron compounds. “Source of iron the ferrous salt in the solid state sintering method of typical materials include oxalate, ferrous Li2CO3 and NH4H2PO4 or (NH4) 2HPO4 [4], a mixture of raw materials under the inert gas after sintering; ferric phase method solid source approach Sony in Valencia, and represented the source of iron oxide or iron phosphate, Shanghai Jiaotong University, MA Zi-Feng et al [39] also made a similar Sony, with phosphate ferric iron as a source of great ball milling energy. Process solid phase is characterized by the process intuitive and quality of the material capacity and volume ratio were greater than the capacity, the production process can achieve ultra low emissions. However, solid phase method difficult to measure the precise chemical control of raw materials, process route selection is important for the requirements of process control are very high. Valencia is the successful adoption of the method solid phase to achieve the industrialization of a typical representative of the society around the “CTR” means to apply a large number of patents phosphate material. PA3191U-4BRS  PA3285U-1BRS

 

Liquid-phase chemical methods generally adopt the “legal ferrous salt, are synthetic carbon-coated lithium iron phosphate doped sub-micron and Nano-particles effective means of common methods of liquid phase chemical synthesis are essentially the hydrothermal method [ 12, 40 -42], Solvothermal [43], the gel - sol-gel method [37, 44], the method of co-precipitation [45] and so on. By the hydrothermal synthesis method, for example, use generally LiOHH2O, H3PO4 and water-soluble ferrous salt (as FeSO4) as the precursor, the reaction at low temperature hydrothermal by a number of hours LiFePO4 direct synthesis. reaction conditions Liquid-phase synthesis of the advantages of low temperature (low energy), flexible and controllable, the product structure of homogeneous composition (a small amount of synthesis) can be synthesized nano-particles, disadvantage is that when production equipment to large scale, demanding, not easy controlling the oxidation of ferrous ions is not easy to achieve a real sense of the wording of the measure chemicals, materials, performance and stability, not easy to control the batch, and easy to produce programs pollutants and sewage. For the gel - sol-gel, it is reaction time is too long Er Shi has seriously reduced the productivity problem. Methods of synthesis in liquid phase there is an obvious disadvantage is that synthetic materials, press on the density below the capacity of the small volume of material, the battery manufacturing process, the transformation of matter is very difficult (mixing and embedding). Hydro-Quebec is a typical representative of chemical methods in liquid phase, materials , particles of lithium iron phosphate in a particle diameter of 50 ~ 250 nm between the magnification of the 1C discharge capacity at room temperature is higher than 140mAh / g, 60 ℃ under 0.25C/1C charge and discharge 400 times the capacity retention rate from 98.2% [46]. PA3468U-1ACA PA3097U-1ACA

 

To date, reported publicly have large volumes of manufacture of phosphate lithium iron-based cathode materials for lithium-ion batteries the company of only two U.S. companies Valence Technology [47] and A123systems [48]. The first claim is the first commercial company to iron phosphate lithium battery, which says that its nano-phosphate batteries with features ultra-high power is now the company has received Sequoia Capital, General Electric, Motorola, Qualcomm and d other companies 1.5 100 million U.S. dollars of investment products, including batteries of professional power tools, HEV (Hybrid Electric Vehicle) Battery, PHEV (Plug-in) battery and the BEV (battery EV) battery. In Japan NTT, Mitsui has also actively developed the lithium iron phosphate material [49]. Mainland China and Taiwan, as some manufacturers to join the ranks of the evolution of material, some manufacturers have made progress [50-52]. PPP012L F1781A

 

5 Conclusion

 

Intrinsically safe, non toxic, greener, rich in raw materials, high performance lithium-ion battery cathode material lithium iron phosphate lithium-ion battery materials is to achieve from mobile phones, laptops and other applications small scale through professional power tools, emergency power, light electric vehicles, hybrid electric vehicles, energy storage, and other large aerospace applications to important documents. To overcome the low conductivity of the material to bring the application of the barrier, the researchers of materials, including nano-based particles, the surface coated with carbon and a large number of body modification such as doping, and d ‘try a variety of effective synthetic methods for controlling material performance. The success of the industrialization of U.S. companies will quickly drive the internal material lithium iron phosphate and related industries. PA3396U-1ACA PA3467U-1ACA

1 Introduction

 

Lithium-ion KD186 NF343 battery is a device very energy efficient and compact storage. Lithium-Ion trend in technology development is the pursuit of superior quality and volume of the specific energy, higher power, and longer service life, cost of ownership, while more the emphasis on adaptability of the machine’s environment and security applications from mobile phones, laptops extended to power tools, light electric vehicles, hybrid electric vehicles, telecommunications prepare electricity, l ‘Aeronautics and space to other areas. The safety of lithium-ion has been the industry and the community aspect of the research. The solutions include [1]: designing the physical structure of the battery safety, using a higher thermal stability of electrode materials, using organic additives or inorganic electrolyte, divide the three levels or composite organic / inorganic (ceramic) composite structure [2], change the traditional electrode materials for oxidation-reduction of organic matter, free radical reactions [3].

 

From a security problem occurs to see the mechanism of chemical reaction, select the electrochemical and thermal stability of lithium-ion battery electrode materials is to prevent abuse of batteries led to security problems the most elementary and middle most important. LiNi0.5Mn0.5O2 high-capacity cathode material and LiNi1/3Co1/3Mn1/3O2-based nickel and cobalt-manganese ternary layered material (patent 3M) less LiCoO2 safety have been greatly improved, but these oxides La thermal stability is not satisfactory. ThinkPad R40 battery ThinkPad X60 battery To LiFePO4 structuring represented by polyanionic phosphate materials because of their outstanding intrinsic safety, life cycle length, the wide electrochemical window, low cost and other characteristics [4] has been examined closely. Phosphate also include materials with high oxidation-reduction of a compound intercalation of electrons as LiMnPO4 [5-7], LiVPO4F [8-10], LiCoPO4 [11, 12], LiNiPO4 [11] , and features high electrochemical capacity of multi-electron Redox intercalation compound, such as Li2NaV2 (PO4) 3 [13] and Li3V2 (PO4) 3 [14, 15]. This article focuses on the most mature of phosphate - the material of lithium iron phosphate, the latest research and progress of industrialization.

 

2 Lithium Iron Phosphate inherent structure, physical properties and application of the barrier

 

LiFePO4 olivine structure is a polyanionic phosphate PO bond is very strong materials, thermodynamic stability, the use of safe and reliable, is currently the most talked about one of the subjects of the lithium-ion battery cathode . The material is completely incapable of electrochemical intercalation of lithium, the network, b axis contracted by 5% and 3.6%, c-axis direction of elongation of 2%, the size of the bias network smaller, about 6.6%, the lattice strain is low, material structural stability, life cycle very long. LiFePO4 has also a non-toxic, hp Pavilion dv8000 battery  hp Pavilion dv4 battery environmentally friendly, rich in raw materials capacity (theoretical capacity of 169 mAh / g platform) and the coulomb efficiency is high and stable, loading and unloading (3.45 V Li vs. / Li +), high energy and the specific benefits of specific power, if the material is appropriate for safety, cycle life, power characteristics, such as the use of cost-sensitive applications to battery scale.

 

LiFePO4 charge and discharge process can be broadly described as: LiFePO4FePO4 Li + + + E. At room temperature, the behavior of LiFePO4 lithium intercalation de-FePO4 training and is actually a dual interface LiFePO4 phase two process reaction phase [4]. Newman [16] Yamada [17], Dodd [18] respectively, a systematic study of the process of loading and unloading process LixFePO4 phase transition (see Figure 1).

 

LixFePO4 is a typical mixed ionic conductor electronic bandgap of 0.3 eV, the electronic conductivity of the ambient temperature is very low, about 10-9S/cm; LixFePO4 room temperature ionic conductivity is very low (~ 10-5S / cm), the characteristics of olive stone construction makes the body of the Proliferation of lithium-ion F4809A F4812A channels (only reach the quasi-one-dimensional diffusion), the LixFePO4 off a reaction in two phases lithium intercalation, LiFePO4 FePO4 and theoretical lithium-ion the diffusion coefficient of around 10-8 cm2 / s, and 10-7 cm2 / s [19], while the actual measure of LiFePO4 lithium-ion and FePO4 the “effective” diffusion coefficient may be lower than the theoretical value of 7 orders of magnitude, respectively, 1.8 × 10-14 cm2 / s and 2 × 10-16 cm2 / s [20]. So, make LiFePO4 for lithium-ion battery cathode material must also improve their electronic conductivity and ionic conductivity, improving its capabilities electrochemical interface.

 

3 Material Lithium iron phosphate method modified

 

On lithium iron phosphate to improve the electrical conductivity of the main methods include: granular nano-technology; coated conductive layers, such as nano-carbon layer, the right to conduct body doped lithium iron phosphate, synthetic material Lithium Iron phosphate in the surface of a good electronic conductivity Fe2P, and Fe3P phase Fe15P3C2, improving materials of lithium iron phosphate, the surface morphology, as Valence Technology Inc. has proposed a (CTR carbothermic Reduction ) method [21] will be conductive carbon particles dispersed in phosphate. Nano particle materials lithium-ion battery is to improve the conductivity of the most commonly used. Lithium PA3421U-1BRS PA3591U-1BRS iron phosphate, reducing the particle size and shorten the effective diffusion of lithium ions travel, can effectively improve the ionic conductivity of the material. Granular materials, nano-technology will reduce the electronic conductivity, it is usually also the introduction of synthetic materials, the doping of metal ions and conductive material coated on the other hand, carbon coated in situ, particular can effectively control carbon coated lithium iron phosphate materials, nano-size particles. Material lithium iron phosphate synthesis itself, we are often several methods used in the same time, the role of co-existence of several mechanisms.

 

Changing the doping is to improve the functional electrical properties of electron transport and electric or ion to improve the structural stability of materials, the most common. Lithium iron phosphate is often used to driving on the mass of doped metal ions, including Mg2 +, Ni2 +, Co2 +, Al3 +, Ti4 +, Zr 4 +, Nb5 +, W6 +, etc. [21-24]. Chunsheng Wang et al [22] The study showed (see Table 1), doped with magnesium can significantly improve the electronic conductivity of lithium iron phosphate, and a modest increase in ionic conductance, the combined effect of the electronic conductivity and ionic conductivity in the same order of magnitude, the electron-doped A1022 A1185 Neither the rate of increase in conductivity is dominant, but the ionic conductivity is virtually unchanged, at 25 ℃, LiFe0.95Mg0.05PO4 magnification feature much better than LiFe0.95Ni0.05PO4. Nian 2002 MIT Materials Science Department of Chiang YM research group reported the results of attention [24], the study found that the material of lithium iron phosphate doped with Nb5 + and other metal ions in the 4a position of Li hole generated after the carrier, the conductivity of materials increased to 3 × 10-3 ~ 4 × 10-2 S / cm, even more than the LiCoO2 cathode materials oxides (~ 10-3 S / cm) and LiMn2O4 (~ 10 -5 S / cm) conductivity.

 

However, Chiang YM concluded there is considerable controversy, including: doping can significantly improve the electronic conductivity of the material but, in fact, this period of conductivity of materials, measures may be lithium-ion diffusivity and ionic conductivity, nano-technology to reduce the lithium-ion diffusion May be difficult to explain the phenomenon of text, such a substantial increase in electronic conductivity of this material may not be boosted by the formation of Li1-xNbxFePO4 “but is another conductive material and a better ability to generate income. Nazar et al [25] that the iron phosphate lithium material body does not significantly improve the conductivity caused by doping, but because the synthesis process, particularly in high temperatures, easy-phosphate formed on the surface such as Fe2P conductive metal phosphides such as nano-network caused by network operators to improve the conductivity of grain boundaries phosphate. TravelMate 290 battery BATBL50L6 Prosine, etc. [26] found that non-doped nano-or sub-micron (100 ~ 150nm) Supports Lithium iron phosphate 3C flow below the same time have a good zoom feature. Masquelie etc. [27] found that even without doping, uncoated carbon, particle size about 140 nm in lithium iron phosphate below 5C discharge rate is 147mAh / g capacity of specific high They also believe that [28] simply can not be Nb-doped lithium iron phosphate is generated in the so-called “Li1-xNbxFePO4″ materials to improve electronic conductivity of lithium iron phosphate to improve its performance electrochemical mainly attributed to NbOPO4 and / or (Nb, Fe, C, O, P) network of driver training. In fact, in 2001, Yamada et al [29] had already proposed to reduce the particle size material is overcome Lithium iron phosphate Lithium-Ion scattering effectively the problem is limited. YM Chiang and so on in recent years have begun to focus on nanoparticles of lithium iron phosphate end of a study (the United States Patent Application: US2007/0031732A1 and US2007/0190418A1).

 

Carbon in iron phosphate coating of lithium material is also to improve the performance of the most commonly used modified carbon coating of lithium iron phosphate can not only improve the electronic conductivity of materials, but also can effectively control the particles of iron phosphate lithium in grain growth, is to obtain nano-particles, improve the capacity of lithium-ion diffusion of effective ways. University of Montréal, Hydro-Quebec Research Institute and the University of Texas Goodenough carbon in organic carbon coated group conducted a series of effective methods of research, and its greatest impact. In 1999, Ravet, Goodenough and et al [30] first proposed organic compounds (sucrose) as a carbon source for the lithium iron phosphate material in-situ modified carbon-coated, was found at a high temperature 1% of carbonaceous materials, lithium iron phosphate of the 1C discharge capacity of the microscope up to 160 mAh / g was close to the theoretical capacity, which is better than Padhi, and Goodenough [4] in 1997 reported the results of a new qualitative leap since become the modified carbon, iron phosphate coated Lithium is one of the methods most important change. In 2001, PCGA-AC16V6 PCGAAC19V3 Nazar et al [31] a combination of carbon coated, and the concept of nano-particles, the first truly shows the carbon-layer nano-or sub-micron scale, lithium iron phosphate has a very characteristic high magnification (magnification 5C, the maximum capacity 120mAh / g), the results show that carbon-coated lithium iron phosphate can also improve the electronic conductivity and ionic conductivity. Nazar, etc., but not the carbon content and particle size of lithium iron phosphate is optimized, and takes into account the volume ratio of materials, energy issues (carbon content of the text up 15%, will significantly reduce the density of matter from the tap). Dahn et al [32], then try a variety of ways carbon coated to reduce expectations of LiFePO4 / C composite electrode of carbon to improve the overall quality of the material energy, the ratio of the volume and energy tap density, they stressed that the right to lead iron phosphate coated carbon amendment must be comprehensive review of synthetic materials and preparedness capacities, capacity expansion, and the tap density effects. In 2003, Valencia in Baker et al [21] reported the use of “carbon thermal reduction (CTR-carbothermal Reduction) Preparation of coated carbon (carbon modified formulation May be more appropriate) and iron materials phosphate lithium, methods dihydrogen oxide, lithium iron as main raw material, carbon as reducing agent and carbon source, carbon thermal reduction method using the synthetic material and the discharge capacity up to 156 mAh / g ; The synthetic method is a notable feature of the synthesis of matter incorporation of metal ions, while the carbon can be dispersed in tiny particles, while diffusion in the secondary particles, the conductivity of materials is very good . Valencia provided product information to see, the CTR is not only, as mentioned in the text is probably the best way to achieve industrialization, also appears to be integrated optimization of materials, capacity, capacity of ‘expansion and tap density of the ideal way. apple iBook G4 12 inch battery apple iBook G4 14 inch battery

Use rechargeable batteries for laptops, one of the advantages of the desktop, it can greatly facilitate a variety of environments using Sony VGP-BPL8 Sony VGP-BPL8A laptops. Introduced the first battery is nickel cadmium batteries (NiCd) battery but has a “memory effect”, each charge is required before the evacuation, very easy to use, and soon found himself nickel-metal hydride battery (NiMH ) replaced, NiMH not only failed to “memory effect”, but can do more per unit weight of 10% of electricity. The battery most commonly used is lithium-ion battery (Li-Ion), it is also ineffective “memory, compared to NiMH per unit of weight gain more power, the price two times higher than the NiMH . In the same weight, these three kinds battery is 1:1.2:1.9 ratios.

 

Notebook batteries currently used in three main categories: 1. Nickel-chromium batteries, 2. Ni-MH battery, 3. Lithium, they are generally expressed as: Ni-Cd Ni-Cd, Ni-MH Ni-MH, lithium-ion battery LI.

 

The purchase or replace the battery when the laptop for many users, “battery” may be unfamiliar. At the outset, batteries and batteries are two concepts. A battery is composed of several slightly bigger than your thumb, cylindrical, up to about 7.8 cm, 3.6 V is small units. They are the batteries, as a small battery, thanks to the combination series, that is, we see that the battery a. Then talk about how to determine if the battery is several nuclei: Inspiron 1520 battery Inspiron 1521 battery

 

One way: Disconnect the battery for the number of contacts to see, there are a few tens of cores. But it is a “minister” approach. Let’s take a look at “Cao Chong” is how, “said the elephant”: the look of your battery nominal number of v, such that 14.4v, then divided by 3.6 to 4, then turned out to be four batteries together in series. And then take a look at the capacity of the battery pack, for example 3800mAh, then prove that the two aforementioned sets of batteries in series, because the battery capacity is 1500 small - 2000mAh, more importantly, to two to reach 3800mAh. In both cases, the battery is 4 × 2 = 8 cores.

 

The composition of laptop battery

 

Notebook battery from the shells, printed circuit boards and batteries belonging lithium ion battery. People talk about batteries in general refers to the number of batteries in the battery mAh refers to the ability of the laptop battery.

 

Mainly by the protection circuit (or the secondary circuit protection), and the capacity of the circuits in two parts, the laptop battery charge and discharge management and safety.

 

Time Laptop Battery standby mainly by the value mAh decide. Under normal circumstances, a little more PA3399U-2BAS PA3399U-1BRS battery, the mAh value is greater than longest standby time. Battery life for notebook mainly by the charge and discharge times to measure the quality of the products are generally eligible to 500-600 times. Therefore, efficient use of laptop batteries within two years expired the battery is aging, standby affect the strong decrease of the mobility of laptops.

 

Laptop battery advice

 

Indeed, how to make good use of the battery Batteries, how to extend his schedule and use of living and so on, is undoubtedly the troubled mind of the majority of laptop users, a problem the use of laptop batteries There are many methods and techniques that we use usually requires more learning and application.

 

(A) Quick access to hibernation

 

No temporary use of portable computers to conserve battery power, you can set the agenda for power management, allowing the system to enter sleep mode after a period of time, but more or shorter will wait a few minutes, there is no way to make the system of the laptop immediately enter the sleep state? ThinkPad T43 battery ThinkPad T60 battery

 

Notebook computer system to allow quick access to the latent state of a simple method is to directly close the display. Press the representation would require little effort, you can make notebook computers to standby mode immediately and effectively save power. When you need to reuse the time, as long as the opening screen, the system automatically returns to pre-condition.

 

(B) the screen saving mode

 

TFT is the most important components of portable computer power to reduce its use of the battery when the power consumption, notebook makers have devised ingenious schemes, but generally are based on the screen brightness lower and even off the screen mode.

 

In some settings management of laptop power you can customize the brightness of the screen, most laptops with a shortcut keys specific adjust the brightness of the screen, typically 6 to 8-setting brightness level. Studio 1536 battery Studio 1537 battery

 

(C) Energy saving settings

 

Office machines using alternating current, most people may not be the computer attached great importance to energy saving features, but need to use batteries for laptops, using the Energy saving features should be taken seriously. How to design computer hardware more energy efficient, not a user problem to be solved. The user can be installed on the computer of the efficient use of energy saving option.

 

Energy saving settings require the user to set two: First, the computer BIOS setup program on energy saving in the profile settings, the most important thing is that there Energy savings in many settings of the operating system and operations. In the practical implementation of computer systems, Windows systems should outweigh the energy savings settings in the CMOS settings.

 

1. BIOS power saving settings

 

In the CMOS settings, most had a “power savings”, which may choose to “MaximumBatteryLife” and “Maximum Performance” and other options. “MaximumBatteryLife” is the recording power default setting mode. Computer power saving mode phones in several states such as F4809A F4812A Idle mode Idle mode, StandbyMode standby (standby) mode, SuspendMode suspend (sleep) mode. Notebooks, these parameters were able to regulate the consumption of energy, mainly in computer power saving state, the timely closure of some without the use of system equipment. If the state of waiting, turn off the monitor and hard drives, Hibernating apart from a rigorous monitoring and the hard drive, but also the memory contents can be saved on the hard drive, basic maintenance of the overall system of the computer closed, once activated, or restart the computer , office will be refurbished and pre-hibernation state. Energy saving settings in the CMOS, mainly determined by the IdleMode in StandbyMode the standby time set by the standby mode to enter SuspendMode time SuspendTimeout. Carnets PhoenixBIOS are most common. Energy saving various BIOS settings may be somewhat different, it should carefully read the screen.

 

2. Windows in the energy saving settings

 

For the average user in the Windows system to operate a better understanding of energy management can be simpler. Windows Help file in the “management hardware and software” entries, there are two laptops equipped with energy-saving elements on “Manage Energy Use” and “use of mobile machinery “in the laptop power management.” Energy saving settings in Windows, read the contents. Tecra A3 battery Tecra A4 battery

 

In the Windows “Control Panel”, “power management click, you can open the” Power Management Properties “dialog box. In the” Power Management Properties “dialog should be” power management “is set to “Laptop” and reasonable settlement “system delay”, “close the Monitors”, “Turn off hard disks” and other options. Another computer can control the opportunity to have some differences, options for the new plant and the latest computer software will be easier to implement, the detailed parameters should be based on characteristics of the computer and Windows files help to complete.

 

In addition, if your laptop integrated infrared port, no time to ban it, it can be extended the life of the laptop battery.

 

(D) Alarm settings

 

Set alarm battery time to prompt the user to record information. Is to click on Open “Control Panel”, double-click “Power” option, point “alarm” menu bar, alarm, battery low “default Windows98 column is 10%,” a serious shortage of battery alarm “Windows98 default column is 3%, may be according to the need for appropriate changes. Click the [Alarm Response] button, the warning “voice” and “displays” are selected, the “power level” May of time to select. Alarm limits so that when the battery is used, it will display a warning dialog and the buzzer alarm sounds to alert the user to record information about the delay. Finally click [OK] to exit the settings of power management. Vostro 1310 battery Vostro 1320 battery

 

(E) Opens the energy save function

 

In the “technology of extended laptop battery life ’section, we introduce the energy saving feature is the use of processor technology, which allows the performance of laptops are playing with their life stack between the time to achieve the best balance.

 

Most new notebook models in both the BIOS of the processor energy saving technology have given support, is enabled by default, if not open until the Enter the BIOS will support the option to open OK.

 

(Vi) The use of third party software to monitor battery status

 

In addition to Windows built-in features power management, there are many utilities available to monitor the battery status. For example, PowerCenter is a power monitoring tool available for free download (http://meMBers.xoom.com/TimothyBug/powercenter/index.htm). Only 800kb, is designed for computer software notebook services. In addition to the amount of PowerCenter shows the percentage of battery, but also to show the actual time and hours of time can be used. NF343 G1947

 

PowerCenter total of three display types.

(1) FullDisplay: In the window displays detailed information, including the use of battery or AC power, the percentage of the battery and the remaining time available.

(2) CompactDisplay: in use is always above the window.

(3) MinimizeDisplay: PowerCenter reduced to make the Windows taskbar, the display of information is relatively simple.

 

PowerCenter is also attached to a control center may be composed of six types of warning. When the battery - to a certain level, a warning time user, save the file being processed. In order not to waste electricity and CPU resources, PowerCenter to automatically detect the changes of state of the batteries.

 

(G) turns deliberately battery

 

Short battery on a regular basis to ensure a full charge. If you need to run completely out of battery power in the specific approach are: the dialog PowerManagement, BatteryDrain choose this particular method of feeding, all three options RunningonBatteries are fixed forever, this laptop will run. Select mode, then enter the Alerts tab and remove the warnings checkbox LowBattery and CriticalBattery check (yes, when the battery is low, the machine will not go into the suspended state). Then leave the computer running the CPU time of tasks, such as the computer automatically perform a number of computational complexity of the 3D demo program, so running out of 361742-001 371785-001 battery remaining, of course, these disposal N Do not forget to unplug the AC plug.