with falling prices laptop computer, probably many of my friends have been wanting a laptop. we went shopping for laptops, it is often to focus only on the product price, weight, appearance and configuration, used by small to take care of the HP WD548AA battery . in fact, the move tool for the laptop, the level of overall performance and merit inseparable from the battery, the battery is just as good as the importance of hard cpu, motherboard, hard drive. Then, the laser will work with you to understand the laptop batteries, may be able to buy your laptop to make recommendations.

Let's start talk battery materials, batteries currently used in laptops are three main categories: 1 battery nickel-chromium, 2 battery Ni-MH, lithium battery 3, they are generally expressed as: Ni-Cd Ni-Cd, Ni-MH Ni-MH, Lithium Ion LI.In this regard, the distinction between three types of batteries, I told a friend of laptops sold had asked, he had also made sales of phone, you will hear how he said. "Battery for notebook commonly used in our life there are many similarities between cell phone batteries, laptop and cell phones are the first to use NI-CD Ni-Cd battery, as the HP WD549AA battery technology is not sufficiently advanced, so nickel-cadmium batteries have many disadvantages of headaches, such as: bulky, heavy weight, capacity"small, short life,there is the memory effect, etc. (not required) of the current nickel-cadmium batteries have been removed, and nickel-cadmium batteries and also break, and there. is not a lot of attention is also needed. there is now IBM ThinkPad T60 laptop battery, and two kinds of ni-mh nickel metal hydride, lithium-ion battery that has a small size, light weight, high capacity, the effect of low memory, time load is short, etc., well received by customers love."

"I also like the power of lithium because she does not remember, when you do not have the first charge-discharge and convenient! Earth people know everything!" "People think that there is no HP 500 battery memory effect is wrong, this is misleading and irresponsible corporations. Lithium batteries have the same memory effect, but its relatively low memory effect, but less obvious chaff. In addition, the two types of lithium batteries, it is a lithium, another is a lithium-ion batteries. ""Lithium-ion battery will be a long time ago, and it is not safe when used often in charge when burning, bursting, perhaps because of the cause of the element lithium overactive . Then, there is an improvement of lithium-ion batteries, has added the element lithium may inhibit the active ingredients, such as lithium really a safe, efficient, practical, while the older lithium-ion battery will also be eliminated. as to how to distinguish them from the label of the battery will be able to identify, lithium battery for li, lithium-ion battery li-ion. Now, laptops and cell phones using lithium is known, in fact, battery Sony VGP-BPS2 laptop."

"Ni-mh rechargeable HP 520 battery is the most environmentally friendly, pay attention to environmental protection, countries have been vigorously promoting the use of nickel-metal hydride, because the ease of recycling, and damage to environment are minimal. However, nickel-metal hydride and lithium ratio, there are still some gaps. charging for a long time in the weight that the absorption capacity is also smaller than lithium, and the memory effect . well that these memories are not as big as nickel-cadmium batteries, but still need to discharge, the user must be exhausted before charging. laptop case, mobile phones are also the same."

Later, I also learned that the lithium-ion (Li-ion more difficult to talk about, or called) also has gaps, such as the load and the time of discharge of high prices and less and so on. Lithium HP 530 battery loading and unloading of the number of only 400 to 600 times, specially modified products, but many 800 times. Load once a day, batteries best lithium, but more than two years of the Xiecai. And batteries nickel-metal hydride rechargeable for more than 700 times to achieve a certain quality and charge good product and discharge up to 1200 times, so the comparison, the battery nickel-metal hydride live longer than the lithium batteries and nickel-metal hydride batteries than the price much lower lithium batteries. Thus, it is perfect step of laptop batteries.

Know the HP 540 battery materials, let us understand their origin. The origin of the battery for laptop is mainly the Japan, the Korea of the South, China and China of Taiwan province, especially in the Japan, mainly because the battery in portable batteries close by Japanese manufacturers, such as: Toshiba, Panasonic, Sanyo, NEC and so on. Then that many forms laptop battery brands, but the batteries used in the Japanese brands, the manufacture of batteries for the electronics of the Japan companies have made good gains. South Korea, China and Taiwan Province of China to do more use of the main treatment and production of batteries are also at the heart of the Japan.

the vast majority of laptop batteries to square one, the market also has a small number of ultra-thin notebooks using cylindrical batteries, such as the Sony 505 series, toshiba protege series (I have not seen a triangle).The weight of the HP 550 battery varies according to the material and models, Toshiba 1750, for example, it is equipped with batteries nickel-metal hydride, the weight of more than 500 grams, I will mention that it hurt. I saw on the market as a machine with the Toshiba 1750 is the first same OEM manufacturer, the batteries are also common. But others are using a lithium battery, weighs less than 250 grams, while I envy.Mobile phone battery then compared the results of the same. So, I came to a conclusion, the same size and shape of the nickel-metal hydride lithium and electricity, double the difference in weight.

Capacity of the size of the mark, mainly of the battery to determine the MAH of the Chinese name appears to mAh. Milliampere-hour size is directly related to the use of portable time, I saw the laptop low 3100MAH battery, the highest 4500mAh. According to the said common sense, 4500mAh battery life much longer than 3100MAH, but it cannot be generalized. Battery configurations mobile life with an excellent relationship, for example, the HP 6100 computer laptop with a PIII-M, MOBILITY RADEON cards graphics and many other efficient technologies energy in the material.with battery Dell Inspiron 6000 laptop 4000MAH, until the use of the time to 4 hours above. Adopted 1800 Toshiba CPU, well equipped office with a 4500mAh battery, use only time to 3 hours. This also indicates that MAH battery of laptop not only related to materials, energy-saving technology is very important to choose the time needed for reference multi - portable computer.