Laptop battery

Computers have played a big role in our daily life. A variety of electronic data processing devices such as personal computers (PCs), notebooks or laptops, and personal digital assistants (PDAs) have been available. The convenience and transportability of the notebook computer has produced a large and lucrative market for manufacturers of such machines. Laptop or notebook computers have increased in power, speed, and memory capacity to the point where they offer functionality comparable to that of desktop-style personal computers. Nowadays, the all-in-one notebook computers are dominant type of computer products.

Notebook computers obtain operational power from either rechargeable battery packs for full stand-alone use, or AC power for use conveniently close to power outlets. Docking stations also are designed to plug into AC power, and to provide that power to the notebook computer. Most of the time, a notebook computer is driven by a battery power source. As a portable power source for portable electronic devices such as notebook computers, digital cameras, or video cameras, a rechargeable battery pack is used. While a portable computer is in use on AC power, it takes advantage of the available AC power and recharges the battery pack. The battery pack can also be removed from the portable computer and charged separately. The battery is housed in the palm rest in front of the keyboard of a keyboard housing, or behind the keyboard. Power management functions are prepared for extending the battery driving time. One of the power management functions is the suspend mode in which power supply is stopped, except for the some devices including a memory in which the data necessary for returning to the present status of the system is stored. p>

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