Costco hasa battery that says "golf cart, Rv, solar" no where does it say it's a 6 volt. I'm assuming that only golf cart batteries are 6 volts but does anyone know for sure?
I personally have (6) of these at my cabin hooked up to a Outback FM-80, and they have been flawless for the past 1.5 years and haven't needed any water. Great battery so far, and best price per amp hour out there in my opinion.