My observation of lithium batteries is that a signficant portion of their wear out comes even without cycling. In other words, they have a independant time factor of degradation in addition to that associated with harsh use conditions.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.