2005 prius lights

Hi New to the chat. Help: Have the triangle of death/ VSC light. Have taken out the hybrid batt and checked all cells (All are between 7.3 and 7.7 volts). Have removed all the buss bars and cleaned them and the connectors that are on one side of the buss bars. All posts and terminals are cleaned and connected, no broken wires, and the hybrid batt is showing a full charge. I can clear the error codes with a cheap OBD and the car will start up nicely and then the VSC light comes back on after less than a minute of the car running. Starter batt is putting out 12 volts!! Help!