Method for defining the electrical load supplied by a nickel-cadmium battery and for sizing the battery to supply that load is described in this recommended practice.
IEEE Std 1568-2003 history
0000 IEEE Std 1568-2003(R2010)
2003IEEE Std 1568-2003 IEEE Recommended Practice for Electrical Sizing of Nickel-Cadmium Batteries for Rail Passenger Vehicles