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Old 12-01-2008, 12:05 AM   #10
ProDigit
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Quote:
Originally Posted by Andybaby View Post
li ion batteries dont like to stay topped off though. if you are going to not use one for about 2 weeks, i would discharge about 50% and then put it away. Li ions like to be used more than anything else i think.
I've written a few articles on this on other forums.
I written Duracell and they have confirmed that Li-Ion best always remains charged.
Completely emptying them could cause them to get into a state where part or even the whole of the battery never can be charged again.
A Li-Ion battery always need a remaining voltage, and the less you charge it, the less it wears out.
This resembles my experience of the past 5 years I've been using Li-Ion batteries in my cellphones.

They also recommend to at least charge a non-used battery once every 2 to 3 months (depending on the drain of the battery).
Modern batteries may only need recharging every 6 to 9 months when not used.
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