-
Marine Batteries
AGM-D31M, Optima, Bluetop, Group 31M, AGM Battery
BLUETOP® Marine Battery: The BLUETOP starting battery (dark gray case) is to be used when a dedicated starting battery is required; it should never be used for cycling duty. The dual-purpose BLUETOP (light gray case) can be used for both starting and deep cycling; it is a true deep-cycle battery with extremely high cranking power.