According to the GPBatteries guys LiON have no self discharge if they aren't being drawn down by a monitoring circuit. But they also mention that embedded safety circuits can run the batteries down a bit until those circuits stop working because there is insufficient charge in the battery to run them, and then the battery can't be charged (aka its a brick).
Of course you could charge it if you could get around the safety chip in that case it would just require a bit of cleverness.
Again my experience with LiON cells is that once they get to about 3V if you don't put a load on them they don't discharge any further on their own. That would seem to be supported by the chemical energy needed to absorb the anions but I am not a chemist, just an aging EE. Thanks for the links.
According to the GPBatteries guys LiON have no self discharge if they aren't being drawn down by a monitoring circuit. But they also mention that embedded safety circuits can run the batteries down a bit until those circuits stop working because there is insufficient charge in the battery to run them, and then the battery can't be charged (aka its a brick).
Of course you could charge it if you could get around the safety chip in that case it would just require a bit of cleverness.
Again my experience with LiON cells is that once they get to about 3V if you don't put a load on them they don't discharge any further on their own. That would seem to be supported by the chemical energy needed to absorb the anions but I am not a chemist, just an aging EE. Thanks for the links.