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Joe Shell · 11-30-2020, 06:33 PM

The car was built to run with a six volt electrical system. Increasing battery voltage by 33 percent is not a good idea. You can see when bulbs burn out but what about damage to the coil, etc? There is a risk but wheres the gain?

Just put a 6 volt Red Top Optima battery in my 36 Cabriolet and what a difference! Spins over fast and starts instantly. This battery has 800 cold cranking amps which is more than any other battery I could find. The Optima I replaced was in the car for almost 13 years. Good value for $199.99 from Optima with free shipping.

11-30-2020, 06:33 PM	#7
Joe Shell Member Join Date: Apr 2013 Location: Long Island, NY Posts: 72	Re: 8 volt battery in a 6 volt car? The car was built to run with a six volt electrical system. Increasing battery voltage by 33 percent is not a good idea. You can see when bulbs burn out but what about damage to the coil, etc? There is a risk but wheres the gain? Just put a 6 volt Red Top Optima battery in my 36 Cabriolet and what a difference! Spins over fast and starts instantly. This battery has 800 cold cranking amps which is more than any other battery I could find. The Optima I replaced was in the car for almost 13 years. Good value for $199.99 from Optima with free shipping.