SpaceOps Conferencespower system has more margin but eclipse seasons are an almost constant feature of the routine mission (albeit with varying duration eclipses). In addition, the satellite flies in a non-sun-synchronous orbit, which makes the assessment of the expected state of battery charge more difficult. An overview of the techniques used on other flying ESOC missions will also be presented (Herschel, Planck, GOCE, Venus Express and Rosetta).The paper will describe new operations that have been introduced to manage the degradation of the batteries, including specially designed settings that, while respecting the allowed usage profile of the battery, modify the charge and discharge management strategies and other flight operations to almost halve the rate of degradation compared with the worst-case design assumption. In addition, the methods used by each mission to assess absolute and/or relative battery degradation in flight will be discussed.The paper will conclude with an overview of the lessons that have been learnt so far at ESOC from missions flying Lithium Ion batteries. These lessons could be used as a model for current and future operators of spacecraft with Lithium Ion batteries on how to best manage their batteries for longevity, mission reliability and success.