ncrtc / battery / ot / 94 design, manufacturing and supply of battery for auxiliary substations for the work of delhi ghaziabad meerut rrts corridor of ncrtc ( package-19, lot-1 and lot-2 ) , item description , battery for ass ( type-1 ) : supply of one set of 110v ni-cd batteries for each ass ( one set comprising of one no. of battery bank ( one bank of 85 cells ) , complete with mounting rack, battery protection & connections ) . each battery bank shall be rated to ensure total autonomy of the substation for 8 hours & the rating shall not be less than 180 ah in any case. , battery for ass cum switching station ( type 2 ) : supply of one set of 110v ni-cd batteries for each ass ( one set comprising of two no. of battery banks ( one bank of 85 cells ) , complete with mounting rack, battery protection & connections ) . each battery bank shall be rated to ensure total autonomy of the substation / switching station for 8 hours & the rating shall not be less than 180 ah in any case.