Michael Rigby-Jones 16:47 2005-12-15: >Li-Ion has the same kind of problem though, if their voltage falls below a certain amount (~2.5v IIRC) they may not recover, The noramlly built-in protection protects them from that, and the very low internal leakage makes it stand a bit time also after that until they are charged. >and you have to be ultra carefull charging them from this state anyway. And this is taken care of by tha standard charge IC. (Or do it in software if you roll your own) -- Morgan Olsson, Kivik, Sweden -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist