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BrianG · 01.19.2011, 05:55 PM

Well, being used, they could be at or near the end of their life-cycle. And since manufacturing is not perfect, slight differences in material tolerances could account for the variance in cells for a given pack.

Individual cell life could be dependent on the physical proximity of the cell to a heat source in a laptop. There are certainly hot spots in any laptop and if only part of the battery pack makes contact with those spots, only those cells will be as affected.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	01.19.2011, 05:55 PM Well, being used, they could be at or near the end of their life-cycle. And since manufacturing is not perfect, slight differences in material tolerances could account for the variance in cells for a given pack. Individual cell life could be dependent on the physical proximity of the cell to a heat source in a laptop. There are certainly hot spots in any laptop and if only part of the battery pack makes contact with those spots, only those cells will be as affected.