<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ColdLight: when you drain a rechargeable NiMH battery fully with an LED light, it gets damaged? that's what someone said awhile ago. If true, does this also affect rechargeable alkalines and NiCad's?<HR></BLOCKQUOTE>
It will definitely reduce the life of the rechargeable alkaline. Rechargeable alkalines should be refreshed while it's still basically fresh. NiCad and NiMH are both better recharged before reaching a state of being dead. In most cases you notice a degeneration of performance before it gets significantly below the proverbial one volt lower limit. If left on in a infrequently checked application, it can become exhausted, or even some LED lights with regulation can drain them too far down.
Usually in such a case a couple of charge discharge cycles will return them to a quality state.
If you have a 1700 mah NiMH, and you're only permitted to use a small number of those milliamps, then those milliamps aren't worth a plugged nickel, are they? NiMH was introduced as a replacement for NiCad, and are a resonable replacement only if it's power is as readily available. The tales of only being able to skim the mah off the top of NiMH's are greately exaggerated.