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gizmodo.com - 9/9/2008

Sony Switching Battery Life Scoring Method, No Longer Advertising Wildly Misleading Numbers [Battery Lies]

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Sick and tired of never getting even close to the 10 to 12 hours of battery life advertised by PC companies on your laptop? Sony hears you, and is taking pains to improve at least one thing about their power packs. No, not the overheating factor , though they say they've got that somewhat ...

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How Japanese laptop manufacturers measure battery life
Boing Boing Gadgets — ... Elaine Chow explains a little bit about how those Japanese manufacturers cook up those numbers in the first place: Notebook vendors usually base their battery numbers off of Japanese tech association Jeita's method, which measures power depletion when the laptop's completely idle and then averages that number with the laptop's life when running a movie file. Sony will be switching to a Jeita “A” standard, which uses only the movie file test's results. [Gizmodo]

Sony wants to stop lying to us about battery life
CrunchGear — ... We all know that laptop makers have been using misleading figures for battery life for years now. The packaging would say 10-12 hours, but when you started using the thing you wouldn’t get anything near that and Sony is fessing up. ...