Quote:
Originally Posted by davidfor
If Ken means "longer before it has to be replaced", then yes. But it probably isn't noticeable at the rates were talking about. And it is possible the ereader has limits the charging current to a maximum no matter what the available input.
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Right, "longer before it has to be replaced". The difference in the battery's useful life, from charging at 500mw vs. 800mw would be significant, but what the actual numbers would be, I have no idea. As it is these batteries seem to last a long time, and I suspect that the amount of use has a similar effect on the battery's longevity, heavy use having an effect much like higher current more rapid charging.
The "why it is", relates to the effect of heat on the electro chemical process, the current used to charge most batteries creates some internal heating, by necessity, and the more current the more heat. While more current can speed up the charging process it also does more damage to the cell, and speeds its inevitable demise. Less current and more time will achieve the same level of charge, with less damage to the cell.
Luck;
Ken