Qualification Testing and Cycling of Electrochemically Impregnated 12Ah Nickel Cadmium Cells

Space quality 12Ah hermetically sealed, dry powder sintered plaque, electrochemically impregnated prismatic nickel cadmium cells with special negative treatment have been designed and developed by Vikram Sarabhai Space Centre (VSSC), a unit of Indian Space Research Organisation (ISRO) for use on LEO Satellites. Five cells have undergone detailed qualification tests and are undergoing real time life cycling at ISRO Satellite Centre (ISAC). This paper gives details of the cell development and testing and discusses certain aspects like negative treatment, cell storage and cycling test results of 6000 cycles which have been completed so far.