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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.

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Some common sense about Rechargeable battery

When a latitude D820 battery experiences a charge and discharge, we call a cycle or a period. In the stated charge and discharge principles and the capacity decline before a stated standard, the total cycles it can undergo called rechargeable battery cycle life.

Primary Dell CF623 battery or full charged secondary battery, when put aside for a period, it is capacity will decline or lose, this phenomenon calls self discharge that is electricity flee away. It is decided by the inner electro-chemistry system, similar to water leakage from pond or reservoir.

Battery impedance is the resistance when the current flow through an operating cell, in general the internal resistance is included both d.c. and a.c. resistance. For the rechargeable 40Y6795 battery cell resistance is small and electrode is easy to be polarized along with producing a polarization resistance while measure d.c. resistance, the accurate value can't be measured.

Memory effect only happens on Ni-Cd batteries. As in traditional technology a Ni-Cd battery's negative is agglomeration with thick Ni crystal, if Ni-Cd batteries are recharged before they have been fully discharged, Ni crystal easily gathers to form agglomeration, which makes the primary discharge platform come into being. The HP HSTNN-LB31 battery stores the platform, which will be considered as the end of discharge for the next cycle even though the capacity decides that the battery can be discharged to a lower platform. The battery will store this process in its memory so during the next discharge, the battery only remembers this reduced capacity. Similarly any further incomplete discharge in each use will aggravate the effect makes lower capacity. The effect there are two methods to remove the effect: firstly deep discharge at trickle current (i.e. 0.1C to 0V), secondly several cycles at high currents (e.g. 1C).

Low temperatures (e.g. -15?) will obviously reduce Ni-Cd and Ni-MH Apple A1175 battery discharge rate. At -20? electrolyte is at its freezing point, charge speed will greatly slow down. At low temperature (under -15?) charge will raise the internal gas pressure and probably unseal the safety vent. Ambient temperature of 5?to 30? is the best range to get effective charge. Generally with temperature rising charge efficiency will become higher. But when the temperature rises to 45? or higher, the materials performance in the battery will be degenerated and battery service life will be shorten greatly.

The continual charge action after fully charged with certain charge approach is overcharge. the positive capacity is higher than the negative on design, the generated oxygen in positive can composite, through separator, with Cd generated in negative. In general condition the internal pressure will not rise obviously, but if the IBM thinkpad T43 battery charge current is so heavy or the charge time is so long, and the generated oxygen can not be used up in time, there will be some quality defect risen such as internal pressure rising, battery distortion, leakage and so on. Meanwhile its performance will decline.

If a cell's voltage reaches a designed value, that means the battery has discharge the stored capacity, but still the discharge action is continual, over-discharge will cause. Commonly the end voltage can be identified through discharge current, for example the end voltage is set at Laptop battery 1.0V/cell as discharged at 0.2C-2C, and 0.8V/cell at 3C or more, e.g. 5C or 10C. Over discharge may cause disaster, especially at heavy current or repeated over discharge. Commonly over discharge can make cell inner pressure raise, and the reversibility of activity materials both in positive and negative will be damaged. Even by charge only part can recover and the capacity is reduced obviously.

Any kinds of conductive material being bridged with the external terminals of a battery will result in short circuit. Based on the Discount laptop batteries system, a short circuit may have serious consequences, e.g. rising electrolyte temperature or building up internal gas pressure. If the internal gas pressure value exceeds the limitation of cell cap endurances, the electrolyte will leak, which will damage battery greatly. If safe vent fails to respond, even explosion will occur. Therefore don't short circuit.

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