def VStack_Calc(N, Vcell):
    """
    Calculate VStack.

    :param N: number of single cells
    :type N  :int
    :param Vcell: cell voltage [V}
    :type Vcell:float
    :return: VStack [V] as float
    """
    try:
        result = N * (Vcell)
        return result
    except TypeError:
        print(
            "[Error] VStack Calculation Error (N:%s, Vcell:%s)" %
            (str(N), str(Vcell)))