COMPARATIVE STUDY ON THE UTILISATION OF ACTIVE MATERIAL IN THE CAST AND EXPANDED LEAD ALLOY NEGATIVE GRID

This paper compares the performance of negative plates made from cast and expanded Pb-Ca-Sn grid alloy at different rates of discharge (current density). It has been found that at very low rate of discharge the active material utilisation of expanded grid is more whereas at high discharge rates the active material utilisation is more in the case of cast grid.