"last 2 cars have yellow tops in them. Last purchase was just over 3 years ago and the yellow top developed a bad cell in a couple of hours. I drove the car in the morning and drove it later home. Parked it for 2-3 hours and went to use it and had no power to even turn on the instrument lights, while prior to this it showed no sign of any issues but soon as the 3 year warranty was up it crapped out. Try getting in touch with optima and they offered 25% off of a new optima. I could of bought 2 lead acid batteries with 3 year warranty on each for the same price and be set for 6 years minimum. Sad"