The cyclic voltammetry characteristics of Sn2+/Sn couple in the H2SO4 medium on a graphite felt electrode is evaluated. The charge–discharge performance of Sn–V battery with VO2 +/VO2+ couple as positive part and Sn2+/Sn couple as negative part is investigated through a small laboratory cell. The result shows that though the deposition/dissolution of Sn is not a normal reversible process, Sn deposits can almost dissolve completely during the charge–discharge tests. It is remarkable that the battery could work normally at a current density of 180 mA cm−2 with an average voltage efficiency of 72%.