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How to store backup notebook battery?
Hi.
I have a HP 6720s notebook and I have 2 batteries for it.
Both of them are functional, but I'm carrying the second one as backup if I need longer battery time.
How should I store it? Is a plastic bag OK or do I need a special antistatic bag?
Also I read somewhere I shouldn't keep it 100% charged, but on 50%. Is that true?