Is there some special reason why you want pulse charging ?
Not for me, but for
leo_o2.
Regarding why I think there is a strategy to prolong Li-Ion battery life, esp the 20%/year degradation being charge dependent..
From [1] Battery University A very complete description of Li-Ion charge characteristics.
from [2] Wikibooks
--LINK "Battery Power/Lithium Ion Batteries". See "Disadvantages" and "Guidelines for prolonging Li-ion battery life"
and from [3] Wikipedia
--> LINK "Lithium-ion Battery"
Normally, the charge monitor will prevent (say) a notebook computer from letting the battery get to a full discharged state.
Outside of that safety space, a fully dischaged Li-Ion cell, left for more than a week, could have a problem.
Until sale, 40% charge with storage safety current cutoff is I think the norm, which stops being the case as soon as the cell is used.
The "battery enters sleep mode forever" phenomenon, if you don't leave it with some charge in it? I am not sure how much of what we experience is about Li-Ion battery basic nature, and how much is forced by the specific charger behavior.
I stripped down my notebook's previous "dead" battery and found the cells perfectly OK, but the controller circuit would never play again. I have been told that some notebook batteries deliver a preset "timed" life, and then quit. I don't know how true this is. I do have to replace battery packs more than I would like.
I am impressed that your experience with Li-Ion cells recovery is so good. Coupled with my discovery of good cells in a "dead" battery, it is starting to make me cynical about what begins to look like a battery planned obsolescence industry.