Our good friends at lifehacker spotted this suspicious tip for reviving a dead laptop battery over at Metacafe. According to the posted video, freezing the battery can help to rejuvenate it.
PopSci's Mr. Wizard-in-residence Theodore Gray weighs in:
I think it's pretty unlikely this has much effect one way or the other, and of course "dead" comes in different flavors.
I have a battery right now that was practically new and suddenly it's totally and completely dead, like it blew a fuse or something. A freezer isn't going to make any difference for that problem.
But if it's just not holding its charge as long as it used to, as all such batteries eventually do after a year or so, then there is at least the theoretical possibility that freezing it might have an effect.
As fas as what I've read on battery technologies, though, I've never seen the freezing recommendation mentioned as a possible method for increasing the life of different battery systems."
Anyone had any luck with this personally? Let us know in the comments —Dave Prochnow

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This is a mith, I did that when I was 6 years old!
I think this is because the battery fails when it´s hot and when you lower the battery temp, you can used it again.
My battery recently went dead, after I treaked with it to the coffe shop during very negative temps. that and the battery does say "do not subject to 32 degree temps or lower."
There was a lot of hand-wringing over how to fasten the Techno Flash to the exterior of the Eee PC without greatly compromising its portability. While this is a personal design issue, we settled on using good 'ol Velcro, attached to the outside of the LCD. Remove the belt clip from the bottom of the Techno Flash. Attach a strip of Velcro hooks to the underside of the Techno Flash. Find a suitable site on the outside of the LCD cover and attach a strip of Velcro loops. Choose this site wisely—this is where the Techno Flash will be permanently mounted on your PC.
www.laptop-battery-shopping.com