Supply of Battery Bank of rating 110 V DC 183 AH, Supply, of Battery Bank of rating 110 V DC 300 AH, Supply Battery, Bank of rating 220 V DC 143 AH, Erection, Testing and, Commissioning of Battery Bank of rating 110 V DC 183 AH, Testing and Commissioning of Battery Bank of, rating 110 V DC 300 AH, Commissioning of Battery Bank of rating 220 V DC 143 AH