Control of the State-of-Charge of a Li-ion Battery Cell via Reference Governor * *This work is performed in the framework of the BATWAL project financed by the Walloon region (Belgium).This research has been funded by the Mandats d’Impulsion Scientific "Optimization-free Control of Nonlinear Systems subject to Constraints" of the Fonds de la Recherche Scientifique (FNRS), Ref. F452617F.This research has been funded by Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA) of the FNRS.