I have a red top Optima in my BN7 which was several years old when I bough
the car. It continued to start the car with plenty of power for the year I
drove the car before starting my restoration. Now, I have the same battery
sitting on a shelf. Every few months I attach a small charger and test it.
I am not testing it under load but the voltage is remaining stable, even
sitting on the shelf. I think these are good batteries.
Ron.
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