No matter what you do, they will chemically degrade. The max shelf life is
about 2 to 3 years. Freezing them, infact may cause some internal corrosion
and damage over the long term.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
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WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
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wrote in message
...
What is the best way to store NIMH and Lion batteries? I am thinking
about long term storage for many years. They will not be used during
storage. Is it better to freeze them? Should they be charged or
discharged before storage? Do they need periodic attention, such as
recharging or "renewing"? How can I make them last as long as
possible?

TIA - Tom