locoqueso wrote:
@BudJ: The Optima FAQ has information on the difference between Yellow and Blue tops...
Note: The difference between BlueTop and YellowTop deep cycle batteries is that BlueTop batteries have both automotive (SAE) posts and threaded posts, while YellowTops (other than D31T) only have SAE posts.
If you ever get confused on the color tops just remember: if it has a dark gray case then it is a starting battery; if it has a light gray case then it is a deep cycle (dual purpose) battery.
I ordered two YellowTops with light gray cases to use as deep cycles for the coach. The promo code only seems to work with the YellowTop and RedTop Optimas.
Understood, and thanks. But you did not quote all of the FAQ about the difference.
Nowhere does Optima say anything about the yellow top being used for Marine or RV applications, rather other applications that are not the average 'vehicle' applicaton. They provided a number of examples that are Not Marine or RV like.
The difference appears to be 'how' deep cycle, e.g. nowhere with the yellow top do you find what Optima cites about the blue top, "3x more recharges than a traditional battery".
Again, I know little other than what I've read. Maybe you have already spoken with Optima.
Bud