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http://www.uwidonews.com/News/Can-a-use-of-Wi-Fi-Affect-Computer-Battery-Life/related_links

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Posted by saqlain231

YES-The Wi-Fi network protocol requires electric power to operate the radio transceivers used to send and receive data.

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Posted by waqasahmad

Simply YES

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Posted by HamidAliKhan

Yes the Wi-Fi net protocol requires electric power to operate.

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Posted by waqqas1

The Wi-Fi network protocol requires electric power to operate the radios used to send and receive data. Using Wi-Fi on a computer or handheld device can significantly increase its power consumption (shortening battery life).

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Posted by mariuspaul

The power required by a Wi-Fi radio is measured in decibel millwatts (dBm). Wi-Fi radios with higher dBM ratings tend to have greater reach (signal range) but will generally utilize more power than those with lower dBM ratings.

Wi-Fi consumes power whenever the radio is on. With older Wi-Fi network adapters, the amount of power used is generally independent of the volume of network traffic sent or received, as these systems keep the Wi-Fi radio powered at all times even during times of network activity.

Newer Wi-Fi systems that implement the WMM Power Save power saving intelligence may according to the Wi-Fi Alliance save between 15% and 40% over other Wi-Fi systems.

On Linux, the LessWatts.org initiative has also created its own Wi-Fi Power Save Poll protocol that intelligently powers off the network adapter for short periods of time to save energy.

A relatively new technology, using solar energy to power Wi-Fi routers is also an area of active research and product development.

Overall, the battery life (the length of uninterrupted operating time possible with one full battery charge) of Wi-Fi devices varies depending on several factors including:

* the type of battery installed
* the dBm rating of the Wi-Fi radio (network adapter)
* how often the Wi-Fi radio is turned off versus on
* Wi-Fi power savings modes available on the device
* the power needs of the display (screen), processor and other elements of the hardware separate from Wi-Fi

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Posted by sagitraz