The windows 7 battery life issue whats m…
PowerCfg logs a warning if the last full charge capacity is less than 50 percent of the battery’s design capacity. PowerCfg logs an error if the last full charge capacity is less than 40 percent of the battery’s design capacity.
“There’s where engineers are given that 40% threshold mark for the first time the 40% mark that Sinofsky referred to in his blog post today. So the fact that users are seeing “Replace Your Battery” reports for the first time now, may only be because the reliability of such a warning has only recently become viable.
“It should stand to reason that some customers would be surprised to see this warning after upgrading a PC that was previously operating fine,” writes Sinofsky.
“Essentially the battery was degrading but it was not evident to the customer until Windows 7 made this information available. We recognize that this has the appearance of Windows 7 ‘causing’ the change in performance, but in reality all Windows 7 did was report what was already the case.
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You could always check in the BIOS for the options to power off automatically when the X reaches X temperature. But I wouldn't. I mean, I've been doing this for a while and I've never seen that. I would just assume something is broken, either hardware or that poor excuse for software. :P