I'm so confused I had just left my house and got 3 blocks away and my check gauges light came on, then my battery gauge dropped down to 9v. My Jeep didn't lose power, and the radio, heat, lights and everything stayed on. It wasn't even running funny. Then, after being parked for a few hours I drove it again and the battery gauge was back at 14. It wasn't till the next day that it did it again... I'm at a loss and don't know where to start?