Laptop Batteries  

Laptop Batteries


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laptop computer battery If you need to use your portable laptop computer in places that don't have electrical outlets readily available, then you'll need to depend upon its battery for power.  Laptop batteries provide you with convenience and flexibility, whether you use your computer for work or pleasure.  Without laptop batteries, we wouldn't be able to do our computer work from the park on beautiful, sunny days, and travel with our computers would be much more difficult!  Laptop batteries ensure that we can use our computers whenever we want, wherever we want.

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laptop battery lock How long does a laptop battery last?  Well, that depends on the battery type and computer usage pattern.  Most Nickel Metal Hydride (NiMH) laptop batteries will last up to two hours at a sitting, while Lithium Ion laptop batteries may last up to three hours between charges.  Over time, as a battery is repeatedly drained and recharged, its life cycle will gradually shorten, until a charge lasts only ten or fifteen minutes — too short a time to perform useful work without a power adapter attached.  This may be a symptom of a battery memory problem, which can sometimes be resolved by completely draining the battery and recharging it several times.  If this does not solve the problem, it is probably time to order a new laptop battery.

laptop computer Battery manufacturers rate their laptop batteries' capacity in milliamps per hour (mAh).  The higher the mAh rating, the longer the battery will last between charges.  For example, a laptop battery rated at 4000 mAh is designed to provide 4000 milliamps of current for one hour (or 1000 milliamps for four hours) — at room temperature.

Batteries for laptop computers and notebook computers are generally available from the computer manufacturer; these are known as OEM (Original Equipment Manufacturer) batteries.  In addition, compatible batteries are available for most laptops and notebooks at substantially lower cost.

Most contemporary laptop batteries use lithium-ion (Li-ion) or lithium-polymer (Li-polymer) technology.  Li-ion batteries use a liquid electrolyte between their positive and negative electrodes, while Li-polymer batteries use a gel-like electrolyte.  Li-ion batteries are relatively inexpensive and efficient, but they can catch fire if the barrier separating the electrodes is breached.  Li-polymer batteries are more expensive to produce and less efficient than their Li-ion cousins.  To learn about lithium battery care and maintenance, read this informative Apple notebook batteries article.

Shop For Laptop Batteries and Accessories

    Find a broad selection of batteries and accessories for laptop computers, cellular phones, and camcorders.
  • Dell Batteries
    The Dell Notebook Battery and AC Adapter Center offers notebook batteries to help you stay mobile and productive.
  • Lenovo Batteries and Power Adapters
    The Lenovo Batteries and Power center features laptop batteries and power adapters for Lenovo laptop computers.
  • Toshiba Battery Finder
    Find OEM and third-party replacement batteries for your Toshiba laptop or notebook computer.
laptop computer and lithium polymer battery Laptop Computer and Rechargeable Battery

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