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Battery life on e6400

Discussion in 'Dell Latitude, Vostro, and Precision' started by hah2110, Aug 7, 2009.

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  1. avizov2

    avizov2 Notebook Enthusiast

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    avizov2, Aug 16, 2009
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  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    My Microsoft wireless mouse dongle is rated at 5V 100mA, (=0.5W) while the dongle for the Logitech V220 says 55mA, = just under 0.3W which is 2 to 4% of the likely power when running on battery, so the penalty is not a lot.

    I lost faith in that article when I got to the arithmetic (5V x 200mA actually = 1W, not 0.1W). However, the last paragraph is significant:

    While using a BT mouse does not involve a lot of data transfer, there is a significant system overhead in maintain communication. I think the USB wireless mice have less of a system overhead.

    John
     
    John Ratsey, Aug 16, 2009
    #22
  3. MDR8850

    MDR8850 Notebook Evangelist

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    actually....
    5hrs or more if i use the touchpad
    3hrs more or less if i use a bluetooth mouse for ragnarok online
     
    MDR8850, Aug 17, 2009
    #23
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