April 2016 transcript of an excellent lecture on LiIon batteries that gives useful insight into lifetime mechanisms. Shortly after this transcript was published the lecturer (Prof Jeff Dahn) was hired by Tesla. Some of his suggestions and concepts could (probably) be applied to perform similar measurements with suitable precision using much simpler equipment. https://batterybro.com/blogs/18650-wholesale-battery-reviews/103090502-why-= do-lithium-ion-batteries-die-long They say: This is a very long (10,000 word, 60 image) blog post transcribing a lecture by professor Jeff Dahn from Dalhousie University titled "Why do lithium-ion batteries die, and can they be immortal?" Not only is Jeff at the top of his field (he seriously is one of the leading figures in lithium-ion batteries), he also has a knack for making complicated things simple. The subject at hand really is technical, but anyone should be able to follow along thanks to Jeff's incredible understanding of the subject matter. __________________________________________ How are 18650 batteries made: https://batterybro.com/blogs/18650-wholesale-battery-reviews/97472070-mit-v= ideo-how-are-18650-batteries-made Battery bro https://batterybro.com/ BB blogs - many excellent articles and links https://batterybro.com/blogs/18650-wholesale-battery-reviews/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .