Lithium manganese oxide, LiMn2O4 and vanadium oxide, V6O13, have long been regarded as viable cathodes for rechargeable lithium batteries. The high operating voltage of LiMn2O4, 4 V versus Li, combined with the 2.3 V (versus Li/Li+) average voltage of the V6O13 system gives the possibility of a rocking-chair battery with a 1.5 V average operating voltage and good cycling capabilities. In this work, the feasibility of such a rocking chair is demonstrated. Electrochemical investigations were undertaken on cells incorporating a reference electrode. The corresponding rocking-chair cells exhibit good capacity retention and long-cycle life.