Sorry, but this is a bad poll. It assumes the battery is causing the gauge failures which is an unsubstantiated assumption. I doubt very much the battery is the cause. My original battery discharged to the point the gauges did not operate several times when I first purchased my GT. I finally bought a battery maintainer to keep the battery from discharging when the car was not being driven. Then at about the 10 year point the original OEM battery caused my car to go into limp mode due to the amperage being too low. I have not experienced any OEM gauge failures.
Since this poll made a huge unsubstantiated assumption, I'll make one of my own. I believe the problem is due to poor quality control during the manufacture of the OEM gauges and or poor quality control of the individual components in the gauges. Some owners were lucky to get good units that are not failing and others got poor units which are failing. I think it is that simple. That being said, I'm not taking any chances. As I was taught during my flying career, always let the system boot up and accomplish all the computer handshakes before you start the engines to protect the equipment, this is what I do with the GT. I always wait, on every start-up, until the computer handshakes are done and the odometer displays before pushing the red button. It's possible the power surge caused by starting the engine during the computer handshakes is causing the failures or it's just plain bad quality control during the gauge manufacturing. Who really knows?