Supply of battery bank at MDS and SV stations, Installation, Commissioning and testing of battery banks at MDS and SV, stations, Supply of battery bank at YRS, Commissioning and testing of battery banks at YRS, Supply, of battery bank at SV stations of YRS, Commissioning and testing of battery banks at SV stations, of YRS, Supply of battery cells at NIPS, Commissioning and testing of battery cells at NIPS