I additionally have a Dell Inspirion (on XP) as well as we have regularly been means to shift a battery settings – things similar to what commission of battery hold up we wish to embrace a assorted messages as well as when we wish it to close down. (I dont have my Dell laptop with me to endorse just where we shift a environment as well as what a options are). we can find upon a Vista/Sony laptop where we shift a energy saving options though not a tangible arrangement options for a battery life.
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Select the "maximum battery life" can be extended battery life, but not very long, in fact, the use of laptop battery time was not very long, what the manufacturers say that the longest use of 3-4 hours are bluffing, and I ASUS used, and now IBM have used this way, do not worry, the battery itself, no problem!