Originally Posted by JerryS
Isn't a blue top for marine usage? Anyway, local store told me that a red top would work out fine if I was concern about cost. Anyone else heard this? My understanding of these optima batteries are as follow:
red top - starting/high performance vechicles
yellow top - starting/deep cycle
blue top - starting/deep cycle marine
Yep, it's a marine battery, but that just means it has skinny little screw down posts in addition to the SAE terminals. I just put electrical tape over the screw down terminals. I should probably cut them off or see if they're removable, but I've just never bothered. It's still extremely powerful, still has the long reserve and quick recharge, its pretty much the same as the yellow top, except I think the yellow top has within like 15 minutes more reserve and about 100 more CCA's. And yeah, a redtop is better than a regular battery if you're strapped, but it's much, much better to get a deep cycle for a car with a system.