A method for equalizing a storage parameter for a vehicle energy storage
system having one or more energy storage banks associated therewith
includes identifying a quiescent period of operation for the vehicle, and
determining whether the value of a defined storage quantity for a first
energy storage bank differs from the value of the defined storage
quantity for a second energy storage bank by a threshold amount. During
the quiescent period of operation, one of the first and second energy
storage banks is discharged and the other of the first and second energy
storage banks is charged. The one of the first and second energy storage
banks corresponds to the bank having the value of the defined storage
quantity exceeding the value of the defined storage quantity of the other
of the first and second energy storage banks.