[Gerry Zagorski]

Replace every 2 years.... I bought a Wally World Battery these past few times. One for the boat and one for the car. Both worked fine.

If you want to spend some extra money, the Optima batteries work well but the real benfits come into play only as house battery as they can stand up to more discharge and charge cycles. Less of a benefit for your starting batteries since they are not drained and recharged as often.