Copper and indium sulphides were prepared by a chemical precipitation method and further characterized. Low-cost, easily fabricated dry cells were constructed by gluing the metal sulphides on a magnesium foil using a polymer electrolyte. The efficiency, energy densities and cell voltage values of the cells were in the range 8.1-6.2 mWh cm-3, 150-77 mWh g-1 and 1.58-1.21 V, respectively.