Originally Posted by
Burton
300 to 500 cycles are projected for most lithium batteries, with some higher end batteries rated for 1,000 cycles. My own choice for batteries was a capacity that only required charging once a week. Projecting that should give a life expectancy that should be almost identical for cycles and shelf life - about 5 years.
I thought they typically degrade to 50% capacity after 3 years. Keep em half charged in the freezer I guess.
http://en.wikipedia.org/wiki/Lithium...tery#Cell_life