Posts Tagged ‘Laptop’

Laptop Computers are what the name suggests,a computer that can comfortably sit on top of someones lap. They are very durable and can be transported with the user almost anywhere. When there is an electrical outlet available, the laptop computer may be plugged into the outlet. The electrical outlet will keep the battery of this small computer charged. However; when an electrical outlet is unavailable, the user must rely upon the batteries charge, until an electrical outlet can be found.

There are many advantages of owning laptop computers versus owning desktop computers. One advantage is they require less space than the bulky desktops. Because they are smaller and weigh less than desktops, they are easier to carry. Also, they are capable of wireless internet connection. These are just some of the advantages of owning laptops over desktops.

Laptop or notebook computers are available in many sizes and colors. Some are available with a built in video web camera. Notebook computers are sold by retail stores and online as well as, being sold by individuals. Students in college often buy these small computers to help study their assignments, and do research on projects. Other students in college, need these computers because their classes are available solely online. Grades school children may find it easier to learn their first lessons on these portable devices. The device can function as a word processor or typewriter for students.

Many adults use laptop or notebook computers to work from home. Sometimes laptop computers are taken on their appointments to use. Many adults may use them while waiting for their appointment with their doctor, dentist, hairstylist, barber, and other professionals. Many businesses purchase notebooks for their employees to use on the job. Teenagers like to watch videos and movies on the laptop computer. Teens can watch videos on their favorite internet channel. They may also watch some movies for free online. Also, teenagers may want to chat with their friends and other teens online. They may chat with others on their favorite social network site. Plus, teens may download and listen to music from their favorite artists. If their computer is video web camera enabled, teens may wish to make videos of their own. Then, they may upload them to their favorite channel for the world to enjoy. Teenagers may enjoy hours of entertainment with these portable computers. These computers are popular in the home and workplace.

Gary Nolan is a freelance writer. You can find a wide range of laptop computers including Acer Laptop, Sony and HP

If you own a laptop computer, chances are very very good that it is probably powered by a lithium-ion (Li-ion) battery. This battery type has found application in a wide variety of consumer electronics, including PDAs and cell phones. They have gained widespread popularity due to economic and technical reasons, particularly their high charge to weight ratio.

Lithium-ion batteries have replaced the nickel-cadmium (NiCd) batteries that were first used to power laptop computers and the nickel-metal hydride (NiMH) batteries that superseded the NiCd laptop battery technology. They have dominated today’s rechargeable battery market for laptop computers because they are much lighter than the other types of laptop batteries, they retain their charge longer than the other technologies and because they do not suffer from the memory effect phenomenon. A typical lithium-ion battery has two times the energy density of a standard nickel cadmium battery. Additionally, lithium-ion batteries have a single cell voltage of 3.6 volts as compared to 1.2 volts per cell of nickel-cadmium batteries.

However, the disadvantages associated with lithium-ion batteries include: the possibility that a failed battery pack can ignite under adverse conditions, they are more sensitive to high temperature environments than the other battery technologies in their ability to retain their charge, they may fail if they are completely discharged, and the inherit chemistry of the battery leads to degradation with age as opposed to the stronger correlation between battery failures and charge/discharge cycles of the older battery chemistries. Lithium-ion computer batteries also require that protection circuitry be incorporated into the battery pack to monitor the battery charge and to provide safe voltage and current levels, as well as ensuring that the temperature of the battery remains in a safe operating range.

Cylindrical lithium-ion battery cells are generally tubular in shape, much like the shape of standard alkaline batteries. Several cells are enclosed in a plastic housing and the individual cells are connected in a manner to provide the proper output voltage and to maximize storage capacity (rated in milliamp-hours). Prismatic shaped lithium-ion cells are also available, but they are much smaller and are typically used in devices such as cell phones where weight and space is a prime consideration.

There are several things that affect the life of a lithium-ion laptop battery. Battery degradation is hastened by heat, so storing the battery in a cool environment will prolong its life. Manufacturers typically recommend a storage temperature of approximately 60°F for the long-term storage of lithium-ion batteries. These batteries, as stated previously, do not retain a memory from partial discharge cycles, so full discharge cycles are not required. In fact, partial cycling of the battery will help extend its life. Lithium-ion batteries do have a limited lifetime like the older battery technologies, but this is relatively independent of their charging cycles and is chiefly related to their age. A typical battery will last only 2 to 3 years. This is true even if the battery remains unused so it is important not to purchase a replacement laptop battery until it is ready to be put into service.

The author has established a website for replacement laptop batteries that provides tips and buying advice regarding cheap laptop batteries. An in-depth article on laptop battery ratings discusses the voltage and milliamp-hours specifications that are two of the chief considerations in the choice of a replacement laptop battery.

Usually we can have a look of the outside look of laptop battery. It’s so huge comparing with the common batteries in other gadgets. Many people have no idea of the inside part. And I am still wondering what’s the inside constitution? Last week I came to my friends’ repair house. And I have witnessed the whole process that he had this dell D610 Battery rippled apart. It’s not so mystery as I imagined before.

In fact, most laptop battery cells are constituted of a battery case which included by six batteries or eight. The six batteries are connected by a number of charge and discharge detection circuit protection. When our laptop battery has strong dendrite, we could change battery cell to mend its life. The huge case just enveloped the six batteries which has the same look as ordinary battery.

In addition, most present batteries are made of lithium. It’s better than other materials. Comparatively, it’s more economical and practical. As we all know, there are millions computers has brought out each year. And the batteries are produced along with them. There is large demand of notebook computer batteries. That is why lithium has applied to laptop battery, like Toshiba PA3399U-2BRS Battery, HP 417066-001 Battery and HP DV6000 Battery.  Everyone is familiar with the battery in the light lamp. Then you should be clear about the working principle of laptop battery. It’s similar to each other. Then you know how to preserve your laptop battery.

Before, I was curious about the inside of it. But it’s really common as other batteries. The only difference is that it has a sealed covering. This adds some mystery to the battery. In daily usage, there are some tips that we should follow. Otherwise, it has many symptoms. Then you will keep it for longer lifespan. Though dell W1605 Battery has got strike, I can try to handle it by myself as my friend told me how to repair it. But this is not a try, so you should be cautious if you want to have a try. It’s full of surprising but also dangerous.  You might ruin your battery at worst.