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Originally Posted by Snappy!
Yeah ... but li-ion's power decay is normally rated at 10%/yr.  |
The decay rate is dependent upon the chemistry used and ambient storage temperature.
The Li ion batteries in cell phones have more cobalt in them and have a near 100% discharge in 30 days. Li Polymer batteries tend to self discharge completely in 30 to 60 days.
A Li ion battery at 40C self discharges faster than when its at 25C.