Li ion batteries as they age

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Bort
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Li ion batteries as they age

Has anyone else noticed when the batteries are in good health they hold their charge, if i charge it to 80%, a month from now it will be at 79-80%, but batteries near the end of their capacity/life lose charge when not used, if i charge my 5 year old laptop to 100% and not use it, in a month it will be down to 25% or less, and my PDA will go from 100% to 0% in just over a week.

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