Quote:
Originally Posted by Marvin
I know cycle life is also to do with cell construction - but IR is the best scientific indication we can go on - since none of us know who actually makes the packs or what the differences are.
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Well, what is that supposed to mean, it's not scientific if you are ignoring other variables, major one at that. Again, nano-phosphate is much higher resistance (~6 times or more than the best lipo's out now), but they last and last. If they were lower IR, then yes, they would last longer... but again, is the lesser of several variables, namely:
-cell chemistry......ratios of certain additives that can reduce IR, but reduce cycle life
-cell construction.....G3's are made with sub nano construction, which reduce stress on the anode and cathode materials, and thus increase cycle life, and lower IR as well
-cell quality..... the manufacturing facility 'cleanliness' and state of the art-ness is a major factor to cell calendar life in particular, small impurities in layers of the cells can essentially poke their way through the layers of the cell, in turn, shorting out the cell over time, and thus reducing the life of the pack.
The last two points are the major reasons why 'genuine' A123 cells are built to such high standards (identical) and have such high cycle life.