Computer implemented method for controlling energy or power utilization of a battery pack

A computer implemented method for controlling energy or power utilization of a battery pack in a rechargeable energy storage system, RESS, of a vehicle, the battery pack being configured to be operated within an operating window defined by its state-of-charge, SOC, according to normal predetermined SOC limits, and extended predetermined SOC limits in which at least one of the upper limit and lower limit exceeds the corresponding limit of the normal predetermined SOC limits, the method comprising:

• determining a battery pack condition level representative of a battery health status of the battery pack,
• comparing the battery pack condition level with a first threshold value,
• providing predicted energy or power utilization of the battery pack,
• comparing the predicted energy or power utilization with a second threshold value,
• in response of determining that the predicted energy or power utilization is below the second threshold value, operating the battery pack within the operating window defined by the normal predetermined SOC limits, and in response of determining that the predicted energy or power utilization is above the second threshold value, and that the battery pack condition level is below the first threshold value, operating the battery pack within the operating window defined by the extended predetermined SOC limits, such that operating the battery pack within the operating window defined by the extended predetermined SOC limits is allowed in response to the battery health status being sufficiently good as indicated by the battery pack condition level being below the first threshold value.