Reasons to Keep the Laptop Battery 'Plugged In' or Not

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You will get protection against a power outage if plugged in to the wall

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If your computer is plugged in for more than two weeks at a time, remove the battery and store in a cool, dry climate

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If storing your battery for an extended period of time, make sure is have been discharged to 30-50% capacity

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Store the battery in temperatures 70-75 degrees

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Probably should not store the battery in your refrigerator because it will cause humidity when it is removed

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Never use a battery that is really cold or too hot - wait for it to return to room temperature

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Keeping the battery installed while you are plugged in for an extended period of time, it will keep the battery in a heated condition'

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Heat is the #1 cause of reduced battery life

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Another way to reduce the battery life is to use the wrong power pack to charge it

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Third party charges may charge your battery at a higher rate than the factory charger helping to diminish the life of the battery

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Using the laptop on a pillow or your lap will restrict air flow, increasing the operating temperature and diminish the life of the battery

If you simply focus on reducing the heat that your battery is exposed to and make sure the battery is stored properly, you will extend the useful life of the battery.