Stephen wrote:
> On Tue, 02 Dec 2008 10:24:18 -0500, Tom Austin <taustin> wrote:
> 
>> IIRC, Li-ion batteries do have a problem with building up a *resistance* 
>> barrier inside.  While researching batteries several years ago I ran 
>> across some information, but I don't remember too much now.
>>
> 
> From what I can remember, the internal resistance builds up due to age. Whether
> the battery is used or not. 
> 

A internal resistance may build due to age, but I think that is 
different that what I am referring to.



>> If you follow a particular discharge pattern they will build up an 
>> actual 'film' internally on an electrode.  This would increase the 
>> internal resistance of the battery.  A lot of electronics detect this as 
>> a dead battery and shut off accordingly.  The problem is that the 
>> battery still does have a good charge, just a higher internal 
>> resistance.  If you hook it up so that a current continues to be drawn 
>> then the 'film' is burned off and the internal resistance decreases to 
>> normal.
> 
> You live and learn :)
> Again I did not know that.



It has been many years since I researched this information - I don't 
know how accurate I am.

So don't take what I say as fact - only as something to chew on and do 
further research on.

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