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Old 08-29-2008, 05:22 AM   #1 (permalink)
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Default Battery power in freefall

So my Dell laptop Battery runs fromm 100% to about 68% and then suddenly drops to just 7%.It's a few months over a year old. On full I originally get 4.5hrs but now only about 3 and then after that sudden drop it goes to about 7 minutes. Are the battery cells dead? I'm trying to pin point if its dead when it happened, it was working perfectly three months ago. But I haven't used it on battery for the last three months. I just a few days ago went through the airport where you have to put your laptop through those x-ray scanners, could that have something to do with it?
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Old 08-29-2008, 06:39 AM   #2 (permalink)
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Default Re: Battery power in freefall

Yes. The battery has seen it's days. X-rays won't hurt a battery.
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Old 08-30-2008, 10:36 AM   #3 (permalink)
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Default Re: Battery power in freefall

Lithium Ion batteries constantly drain power out of them to keep them from getting a memory. The constant drain/charge on the battery damages the length of the charge after about 300 or so full charges (full drain/charge) Usually this equals out to be about a year and a half give or take.

Cell phones also suffer from the same problem.
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Old 09-12-2008, 12:16 PM   #4 (permalink)
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Default Re: Battery power in freefall

Ah ok, sorry about the late response, been without web access.

But now my battery drains much further going all the way to about 50% before dropping to 7% instead of going to 70% like before and dropping to 7%. Strange?
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Old 09-12-2008, 12:38 PM   #5 (permalink)
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Default Re: Battery power in freefall

Try recalibrating the battery. If that don't work buy a new one.

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