Note: The temperatures mentioned above in regard to CCA and MCA are used to standardize the measurement. Marine Cranking Amps (MCA) are identical in concept to CCA, except that they are measured at 32☏, which makes the numbers higher. What this means to boat owners is that large engines, especially diesels and high compression gas engines require a high CCA rating. Technically, this is the number of amps a battery can deliver at 0☏ for 30 seconds without having the voltage drop below 7.2 volts. The term “Cold Cranking Amps” is used to quantify a battery’s ability to crank over an engine. A battery’s group number does not imply purpose, capacity, quality or other characteristics. Battery group numbers denote the size of the case, location of the battery terminals and general configuration. Just like the batteries used to power flashlights or drum-beating pink rabbits (D, C, AA, etc.), boat batteries come in standard sizes designated by their Group number. Your choice of battery chemistries should be based on the performance you desire balanced against how much you are willing to spend. Battery ChemistriesĮach of the battery types mentioned above is offered with a choice of battery chemistries, which are flooded lead acid, gel, AGM (Absorbed Glass Matt) and most recently, Lithium Iron Phosphate, such as those supplied to us by Relion. Dual-purpose batteries can be used for starting engines or powering house loads. Batteries designed for running loads are called house or deep cycle batteries. Those designed for starting engines are called cranking or starting batteries. There are three types of boat batteries: Starting batteries, deep cycle batteries and dual-purpose batteries. When boats have charging devices like alternators, solar panels or wind generators, batteries store electricity so charging devices don’t have to operate simultaneously with items that require electricity. Key Features Dual Purpose batteries deliver high starting and moderate deep cycle power Ideal for boaters who want high cranking power plus dependable power for power-hungry electronic accessories Enhanced durability design to withstand wear of extended cycling service Superior electrolyte retention prevents dry out and acid leaks Safer to install and transport with no-spill design to prevent leaking acid Lower current resistance separators improve current flow for faster starts Manufactured in the USA Specifications Group Size: Group 4D Terminal Type: Tapered posts Amp Hours (Ah): 135 Cold Cranking Amps (CCA): 1050 Marine Cranking Amps (MCA): 1280 Reserve Minutes: 290 Weight: 99 1/2 lbs.Marine batteries store electrical energy so electrical loads like lights, motors and pumps can operate. Nearly all of the plastics, lead and acid are recycled, so our batteries are great for your boat and the environment. East Penns award winning factory leads the industry in closed loop and sustainable practices. Each battery receives over 250 quality control checks toguarantee consistent and superior performance. for West Marine by East Penn, one of the most reputable battery companies in the country. The exclusive molded-in stainless steel studs and hex nut terminals make connections easy, while protecting against corrosion and failure. They feature a no-spill design that allows you to heelover to angles up to 45. Lead-calcium batteries deliver more power per pound than competitive dual-purpose batteries. Get the cranking amps you need for your engine and the deep cycle power you want for your electronics and accessories.
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