CONTROLLING VEHICLE BATTERY BASED ON OPEN CIRCUIT VOLTAGE

Voltage data about a traction battery is written to memory for a predefined period of time responsive to opening of contactors electrically connected between the traction battery and an electric machine. Processing of the voltage data begins prior to an end of the predefined period of time to generate an open circuit voltage for the traction battery. The traction battery is charged or discharged according to power limits that are based on the open circuit voltage.