Peter Parry wrote:

The intelligent ones are usually the fast/rapid charge type, charging
in about 60 to 90 minutes. They will also have some sort of indication
(LED) when a cell is fully charged. Delta-V (voltage sensing end of
charge), or delta-T (Temperature sensing end of charge) should be
mentioned somewhere.

All of these damage the cells to a greater or lesser extent.

Avoid the ones which simply trickle charge [1]

Actually these are by far the best as far as battery life is
concerned. You can happily charge at 1/10th of the cell capacity for
a day or 1/20th of capacity for days without causing harm. Neither
require careful supervision.

But what happenes when you forget about them, and leave them much longer
than the appropriate time?

Daniele
--
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