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Old Mar 8, 2004, 1:24 PM   #1
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Default Life of Lithium Ion Battery

I read that Lithium Ion battery has got limited life span, about 2-3 years. Means even if you donít use it (kept in unopened condition) still it is useless after 2-3 years. Is it correct? If yes then why the battery manufactures donít put manufacturing and expiry dates on the package? Is there any way to find out?

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Old Mar 8, 2004, 10:19 PM   #2
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Cross posting is not advised. These forums are not linked and not all people read all forums (and not at the same time).

Please pick a single forum for your question.

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Posted: Mon Mar 08, 2004 10:23 am** *Post subject: Life of Lithium Ion Battery?
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I read that Lithium Ion battery has got limited life span, about 2-3 years. Means even if you donít use it (kept in unopened condition) still it is useless after 2-3 years. Is it correct? If yes then why the battery manufactures donít put manufacturing and expiry dates on the package?

This is apparently true for the Lithium Ion chemistry employed today; but advaces in Li-ion battery chemistry/manufacturing technology are almost exponential. By the time the Li-ion bat you buy today reaches its end of life the replacement technology most likely will have significantly different (and better) characteristics.
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Old Mar 9, 2004, 11:26 AM   #3
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if it is under constant use it is about 18 months. ask any ipod or heay laptop user. sice most people don't cycle them in a continuous manner they can go out as far as 3 yrs as is said.
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Old Mar 10, 2004, 10:58 AM   #4
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I've had numerous Sony InfoLithium batteries and still use some that are several years old. They seem to last forever. Perhaps the batteries they speak of here are not Sony.
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Old Mar 10, 2004, 11:03 AM   #5
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i've had sony batteries that last and ones that just went over the warranty period and died. if your a constant user the average is 18 months or 500-1000 charges. due to the work i do i track my batteries for consistancy. i found that there is about an average 25% variance on these things for longevity.
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Old Mar 16, 2004, 12:52 PM   #6
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Reference this :

http://www.batteryuniversity.com/parttwo-34.htm
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Old Mar 16, 2004, 2:08 PM   #7
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sjms, thanks for that link. I have been having some battery problems as well, so this is exactly what I needed to know!

Eric
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Old Mar 23, 2004, 8:44 PM   #8
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Default Thanks sjms..

I read similar articles else where , that 's why I asked the question, if Lithium battery life is only for 2-3 years (regardless of use) then why not manufacturer puts mfg date on it? How I am going to decide whether the battery is fresh or about to die?
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Old Mar 23, 2004, 9:30 PM   #9
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My cynical answer is that your question about judging if the battery is fresh or about to die is precisely why the manufacturers don't put a date on Lithium Ion batteries.
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