I have a Lenovo Z50 laptop with Lenovo's Energy Manager installed. Inside the manager's settings menu is an option to enable "conservation mode", which keeps the battery charged in the 40-65% range when charged, to preserve the battery life.
Unfortunately, this mode is always disabled on booting. I'd like to find a way to have it enabled on booting. (If you know a way to enable it through a command-line command or something like that, that would be OK too!)