Slatterz writes "Ever wondered why you never get the 10 hours of battery life advertised with your new ultraportable? Battery life ratings have been a joke for years, so it's interesting to hear that one big vendor is picking up its game. PC Authority says Sony is abandoning the usual (and wildly misleading) JEITA method for coming up with those 10+ hour battery numbers (they're still using JEITA, but not the usual way). Interestingly, the story has links showing the old and new steps Sony takes to come up with those battery predictions. It's good to see the industry coming clean on this issue."
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