Most Modern outboards require 1000 Marine Cranking Amps. Most of the Marine batteriers on the market today are below this rating. We stock a full assortment of marine batteries from Group 24s to Group 27s and deep cycle also 24M XHD 1000 MCA $91.00 Interstate's high-quality product nationwide warranty and overall value make it the top selling Marine/RV battery. Interstate deep cycle and cranking Marine/RV batteries are built with more than 80 years experience in research, design and technology. With Interstate, you have the power to go anywhere. High Quality Product: Advanced calcium technology Negative plate paste expander Sodium sulfate additive Vibration-resistance technology Four-post design Boat and Motor Superstores Where Florida Boaters Shop and Save 36851 US Hwy 19 N Palm Harbor, Fl. 34684 727-942-7767 Closed Sunday for Family Boating Day