all a laptop needs for stand by is perhaps power to the keyboard and above all power to its memory.. it forgets everything once it loses power.. again not a lot of power is needed to keep it alive..

as for a lithium battery laptop or e cig.. it never goes flat.. the built in control circuitry does not under any circumstances permit it to go flat..

flat isnt really flat its always got 2.7 volts in it.. the cirucitry switches it off at this voltage.. it does this cos the cell will be damaged if let go really flat.. knackered in short..

so flat aint really flat simply switched off.. this only applies to consumer lithium cells.. they are delicate things as i have said many a time..

the pipe and cigar batteries do not have this control circuit built in.. be careful u dont run them down fully flat.. it soon ruins them.. they aint really meant for consumer use.. they can be dangerous.. they are not idiot proof so to speak.. consumer goods have to be.. he he

trog