Use rechargeable battery
The use of rechargeable batteries is one of the advantages of laptops versus desktops, which greatly facilitates the use of laptops in a variety of environments. The first battery introduced was a nickel-cadmium battery (NiCd), but this battery has a "memory effect". It must be discharged before each charge, which is inconvenient to use. It was soon replaced by a nickel-hydrogen battery (NiMH), and NiMH is not only not available. “Memory effect†and 10% more electricity per unit weight. At present, the most commonly used battery is a lithium-ion battery (Li-Ion), which also has no "memory effect". Compared with NiMH, it can get more electricity per unit weight, and the price is twice as high as NiMH. At the same weight, the usage time ratio of these three batteries is 1:1.2:1.9.
At present, the batteries used in notebook computers are mainly divided into three types: 1. nickel-chromium batteries, 2. nickel-hydrogen batteries, and 3. lithium batteries; they are generally expressed as: nickel-cadmium NI-CD, nickel-hydrogen NI-MH, lithium-ion LI.
When buying or replacing a laptop battery, the "cell" may be unfamiliar to many users. First of all, the statement that the battery and battery are two concepts. A battery consists of several small units that are slightly larger than the thumb, cylindrical, about 7,8 cm high, and have a voltage of 3.6 volts. They are the batteries, just like a small battery, after the series combination, is the battery we see. Then talk about how to judge the battery is a few core:
One way: pull the battery to see the number of his contacts, a few are a few cores. However, this is the "minister" approach. Let's take a look at how "Cao Chong" is "called": Take a look at how much your battery is nominally v, such as 14.4v, and then divide by 3.6 to get 4, which proves that 4 batteries are connected in series. Then look at the capacity of the entire battery, such as 3800mAh, it proves that there are two groups of battery packs mentioned above, because those small battery capacity is 1500-2000mAh, or even more, the two groups must reach 3800mAh. According to these two judgments, the battery is 4 & TImes; 2 = 8 cores.
Composition of laptop battery
The notebook battery consists of a case, a circuit board and a battery, and is a lithium-ion battery. Generally speaking, the battery cell refers to the number of cells in the battery, and mAh refers to the capacity of the laptop battery.
The circuit board is mainly composed of a protection circuit (or a secondary protection circuit) and a capacity indication circuit, and manages the charging, discharging and security of the notebook battery.
The standby time of the laptop battery is mainly determined by the mAh value. In general, the more the number of cells, the larger the mAh value and the longer the standby time. The life of a laptop battery is mainly measured by the number of times of charge and discharge, and the quality of the product is generally 500-600 times. Therefore, the effective life of the notebook battery is less than 2 years, the expired battery will age, and the standby time will drop sharply, which will affect the mobility of the notebook.
Laptop battery tips
In fact, how to use laptop battery, how to extend its use time and life expectancy is undoubtedly a problem that plagues the majority of laptop users. There are many ways to use laptop batteries, which requires us to Usually use more learning and application.
(1) Quickly enter the sleep state
When saving the battery power for a while, we can set the power management scheme to make the system go to sleep after a period of time, but this may take a few minutes, long or short, there is no way to make the laptop system Go to sleep now?
An easy way to get your laptop system to sleep quickly is to turn off the display directly. Pressing the display is just a little effort, so that the laptop can go to sleep immediately, effectively saving battery energy. When you need to use it again, just turn on the display and the system will automatically return to the state before the operation.
(two) screen power saving mode
The TFT screen is the most power-consuming component in a notebook computer. In order to reduce the power consumed by the battery when it is used, the notebook computer manufacturers have their own ideas, but generally adopt a method of reducing the brightness of the screen or even turning off the screen.
In some laptops' power management settings, you can customize the brightness of the screen. Most laptops can adjust the brightness of the screen through specific shortcut keys. Generally, there are 6-8 levels of brightness adjustment.
(3) Carrying out energy saving settings
The desktop computer uses AC power, and most people don't pay much attention to the computer's energy-saving features, but for laptops that need to be powered by batteries, the use of energy-saving features should be taken seriously. How computer hardware is designed to be more energy efficient is not a problem that users have to solve. What the user can do is effectively use the power saving option on the computer settings.
There are two settings for energy saving settings that need to be adjusted by the user: First, there are settings for the energy saving mode in the BIOS setup program of the computer; the most important is that there are many energy saving settings and operations in the operating system. When the microcomputer system is actually executed, the energy saving settings in the Windows system should take precedence over the settings in the CMOS.
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