{"title":"Marine Starting Batteries","description":"\u003cp\u003eYou pulled the boat out for spring, hooked up the battery, turned the key, and got nothing. After a winter in storage, a marine starting battery that cranked fine last fall often won't turn the engine over come spring. At Bulldog Battery in Willoughby, OH, that's one of the first stories we hear every boating season, and we keep the right starting batteries on the shelf so you're not stuck waiting at the ramp.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStarting vs. cranking: matching the battery to your engine\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA marine cranking battery has one job: deliver a short, hard burst of current to fire the engine, then let the alternator take over. That's a different job than a deep-cycle battery, which is built to run a trolling motor or your electronics slowly over hours. Put the wrong one in and you'll be disappointed either way. Getting a boat starting battery right comes down to a few things: enough cranking power for your engine, the correct group size to fit the box, and the right chemistry for how you run. We'll walk through it with you so you leave with the battery your boat actually needs.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMarine starting batteries we stock\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulldog Battery house-brand flooded\u003c\/strong\u003e - our own line and the one we put in most boats, built for strong cranking and priced fair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown\u003c\/strong\u003e - a dependable flooded option we keep on hand when the application calls for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeka and Deka AGM\u003c\/strong\u003e - a proven name, including a sealed AGM option for boaters who want a maintenance-free battery that stands up to vibration and pounding water.\u003c\/li\u003e\n\u003cli\u003eFree battery and charging-system testing, so you know whether it's the battery or the charging system before you buy one.\u003c\/li\u003e\n\u003cli\u003eHonest diagnosis: roughly one in ten times the battery isn't the problem, and we'll tell you when that's the case instead of selling you one you don't need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLake Erie boaters from Mentor to Painesville bring us their spring no-start every year, and the fix usually starts the same way: test it, find the real cause, and get you back on the water with the right battery.\u003c\/p\u003e\n\u003cp\u003eBring us the boat, or just the old battery off the bench, and we'll match you to the one that fits your engine and how you run it.\u003c\/p\u003e\n\u003cp\u003eCome in, ask questions, and get a straight answer, no pressure. Call us at 440-942-2555 or stop by the shop on Vine St. in Willoughby, and we'll get you taken care of before the season gets away from you.\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"bulldog-battery-27t-36-marine-deepcycle-battery","title":"Bulldog Battery 27T-36 Marine DeepCycle Battery - 12 Volt 105AH 3 year warranty","description":"\u003ch1\u003e27T-36 Marine Deep Cycle Battery - 12V Marine Boat Battery\u003c\/h1\u003e\n\u003cp\u003eGet reliable power on the water with the Bulldog Battery 27T-36 Marine Deep Cycle Battery. Engineered specifically for boats and trolling motors, this premium marine battery delivers consistent performance for extended fishing trips and marine adventures.\u003c\/p\u003e\n\u003ch2\u003eBuilt for Marine Performance\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eDeep Cycle Reliability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis marine deep-cycle battery handles repeated discharge and recharge cycles without losing power, making it perfect for trolling motor battery applications and marine electronics.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM Quality Construction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eMeets or exceeds original equipment specifications with excellent life span. The sealed lead acid design resists marine conditions while eliminating maintenance needs.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 105 AH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Sealed Lead Acid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 27T-36\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 12.01\" H x 6.60\" W x 9.35\" L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 58 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal:\u003c\/strong\u003e Positive Left\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 3-Year Coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect for Boats and Trolling Motors\u003c\/h2\u003e\n\u003cp\u003ePowers trolling motors, fish finders, GPS units, lighting, and other marine equipment. The 105 AH capacity provides extended runtime for serious anglers and boaters.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Bulldog Battery for Your Marine Power Needs?\u003c\/h2\u003e\n\u003cp\u003eFor over 35 years, Bulldog Battery has specialized in providing high-performance marine batteries that exceed original manufacturer specifications.\u003c\/p\u003e","brand":"Bulldog Battery, Inc.","offers":[{"title":"Default Title","offer_id":44869646647572,"sku":"27T-36","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/27T-36_S__77327.png?v=1778937300"},{"product_id":"8a4d","title":"Deka 8A4D 12V 183Ah AGM Deep Cycle Battery - Group 4D, Heavy-Duty, USA Made","description":"\u003cp\u003eThe Deka 8A4D from the Dominator series is a 12-volt AGM deep cycle battery offering 183Ah capacity at the 20-hour rate. Its sealed valve-regulated gel chemistry is engineered for heavy-duty use and extreme deep discharge scenarios, which makes it well suited for demanding deep cycle applications.\u003c\/p\u003e\u003cp\u003eThis AGM battery supports deep cycling with durability against damage caused by deep discharges, standing up to hundreds of recharge cycles. The sealed design means no need for watering, and the valve regulation keeps it maintenance-free while preventing leaks and corrosion.\u003c\/p\u003e\u003cp\u003eThe battery fits the Group 4D size classification, measuring roughly 20.75 inches long, 8.5 inches wide, and 10 inches tall. At 129 pounds, it features offset post terminals with stainless steel studs for robust and secure connections in challenging environments.\u003c\/p\u003e\u003cp\u003eThis model is ideal for powering heavy-duty marine vessels, industrial equipment, and other systems needing reliable deep cycle power. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eBacked by a solid warranty, this battery is crafted with quality and reliability in mind. Choose the Deka 8A4D for a demanding deep cycle battery that’s built to last and ready to support your power needs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 4D Deep Cycle, 12V 183Ah: Sealed design suited for deep discharge applications in marine and industrial settings with offset post stainless steel stud terminals.\u003c\/li\u003e\n\u003cli\u003eExtended Cycle Life: Designed to withstand many deep discharge cycles thanks to gel chemistry and robust construction, reducing downtime and replacement frequency.\u003c\/li\u003e\n\u003cli\u003eSealed, Leak-Proof Construction: Valve-regulated gel battery with spill-proof construction that requires no maintenance and has strong vibration resistance.\u003c\/li\u003e\n\u003cli\u003eApplication Versatility: Powers heavy-duty marine boats, industrial machinery, off-grid systems, and similar equipment demanding sustained, reliable power.\u003c\/li\u003e\n\u003cli\u003eWarranty and Build Quality: Comes with a comprehensive warranty and is produced to meet the high standards of Deka’s long-standing battery expertise.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869659230484,"sku":"8A4D","price":679.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/dd6c12ac-f887-4f79-a518-a8f8c0c73dbf.jpg?v=1777127889"},{"product_id":"crown-mar-800-marine-starting-battery-12v-650-cca","title":"Crown MAR-800 Marine Starting Battery – 12V, 650 CCA \/ 810 MCA Flooded","description":"\u003cp\u003eThe Crown MAR-800 is a 12-volt marine starting battery built to do one job well: turn the\nengine over, then take a charge back from the alternator. It delivers 810 marine cranking amps\nand 650 cold cranking amps, which is enough current for most mid-size outboards, sterndrives,\nand inboards running out of the Lake Erie ports.\u003c\/p\u003e\n\n\u003cp\u003eTwo numbers matter on a starting battery. Marine cranking amps (MCA) are measured at 32°F\nand tell you how the battery behaves at normal launch temperatures. Cold cranking amps (CCA)\nare measured at 0°F and tell you what's left after a boat has sat through an Ohio spring. At\n810 MCA and 650 CCA, the MAR-800 has margin on both.\u003c\/p\u003e\n\n\u003ch2\u003eMarine Starting Battery vs. Deep Cycle: Get This One Right\u003c\/h2\u003e\n\n\u003cp\u003eThis is a starting battery, not a deep cycle. The plates are thin and closely spaced to\ndump a short, heavy burst of current, which is exactly wrong for slow, sustained loads.\nRunning a trolling motor, a fish finder, or an overnight house load off this battery will\nshorten its life fast. If that's your application, you want a deep cycle or a dual-purpose\nbattery instead. Call us with your setup and we'll tell you which one you actually need.\u003c\/p\u003e\n\n\u003ch2\u003eFit and Terminal Position\u003c\/h2\u003e\n\n\u003cp\u003eThe MAR-800 measures 12\" long by 6.8\" wide by 8.875\" tall and weighs 49 lbs, with the\n\u003cstrong\u003epositive terminal on the left\u003c\/strong\u003e. Measure your battery box and check which side\nyour positive cable comes from before you drive over. A reversed terminal layout is the most\ncommon reason a battery that should fit doesn't.\u003c\/p\u003e\n\n\u003cp\u003eFlooded batteries want a clean, tight connection and a charging system that's doing its\njob. If your last battery died early, have the alternator and the ground strap looked at\nwhile you're replacing it. Boaters out of Mentor Harbor, Fairport, and Grand River put more\ncycles on a starting battery in a season than most people expect.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e810 MCA \/ 650 CCA for dependable starts in cold water and cold mornings\u003c\/li\u003e\n  \u003cli\u003eFlooded lead acid construction, built to Crown's marine spec\u003c\/li\u003e\n  \u003cli\u003eLeft positive terminal, standard marine post configuration\u003c\/li\u003e\n  \u003cli\u003eVibration-tolerant build for the pounding a hull transmits to the battery box\u003c\/li\u003e\n  \u003cli\u003eBacked by a 3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eMAR-800\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e12V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMarine Cranking Amps (MCA)\u003c\/th\u003e\n\u003ctd\u003e810\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCold Cranking Amps (CCA)\u003c\/th\u003e\n\u003ctd\u003e650\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eChemistry\u003c\/th\u003e\n\u003ctd\u003eFlooded lead acid\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e12\" L × 6.8\" W × 8.875\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e49 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePositive Terminal\u003c\/th\u003e\n\u003ctd\u003eLeft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eMarine starting battery\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eWarranty: 3 years.\u003c\/strong\u003e If it fails in normal service inside that window,\nbring it back and we'll make it right.\u003c\/p\u003e\n\n\u003ch2\u003eLocal Pickup in Northeast Ohio\u003c\/h2\u003e\n\u003cp\u003eAvailable for pickup at our Willoughby shop, serving boaters across Lake County and the\nshoreline from Eastlake and Mentor out to Fairport Harbor, Grand River, and Madison. Call\nahead with your engine and box size and we'll have it tested, charged, and waiting at the\ncounter.\u003c\/p\u003e","brand":"Crown Battery","offers":[{"title":"Default Title","offer_id":44869710545172,"sku":"MAR-800","price":164.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/638faf15-78ff-46f0-9a52-60db80b07f8b__59407.png?v=1784986244"},{"product_id":"dc31dt","title":"Deka DC31DT 12V 105Ah Flooded Deep Cycle Battery - Group 31, Marine \u0026 RV, USA Made","description":"\u003cp\u003eThe Deka DC31DT is a 12-volt flooded deep cycle battery built for demanding marine and RV applications. With a 105 amp hour capacity at the 20-hour rate, this Group 31 battery uses flooded lead-acid chemistry to deliver steady power for trolling motors and house battery systems. Its design focuses on durability and reliable deep cycle performance under heavy loads.\u003c\/p\u003e\u003cp\u003eThis battery is engineered to handle frequent deep discharges, supporting up to 50% depth of discharge cycles typical of marine and recreational use. Its maintenance needs are modest for a flooded battery, requiring occasional water checks though it's built to limit water loss during normal operation. The reinforced internal components and dual insulation separators help protect against vibration and shorts for a longer service life.\u003c\/p\u003e\u003cp\u003ePhysically, the DC31DT measures 13.0 inches long, 6.75 inches wide, and 9.375 inches high, weighing in at 59 pounds. It comes with dual terminals, including top posts and 5\/16\" stainless steel studs, accommodating a variety of connection types. This size and terminal setup is well suited to heavy marine and RV electrical demands.\u003c\/p\u003e\u003cp\u003eThis battery is commonly used with marine trolling motors, RV house battery systems, and other off-grid power needs. Its build quality holds up in rough environments like boating and camping. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eDeka backs this battery with a 3-year warranty and it comes from established manufacturing processes known for quality and reliability. If you need dependable power for marine or RV use, this DC31DT offers a straightforward solution built to last.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFlooded Group 31 Deep Cycle, 12V 105Ah: Suitable for marine trolling motors, RV house power, and off-grid systems with dual terminal access.\u003c\/li\u003e\n\u003cli\u003eCycle Life Performance: Supports about 50% depth of discharge for repeated cycling, balancing runtime with battery longevity.\u003c\/li\u003e\n\u003cli\u003eRobust Construction: Reinforced case with dual insulation separators for vibration resistance; dual terminals include top post and stainless steel studs.\u003c\/li\u003e\n\u003cli\u003eApplication Focused: Powers marine trolling motors, RV house systems, and heavy-duty off-grid use including camping and emergency backup.\u003c\/li\u003e\n\u003cli\u003e3 Year Warranty \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869769593108,"sku":"DC31DT","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/e15a9cac-91d5-45fc-986d-f76b1ef9f593.webp?v=1777128277"},{"product_id":"8a31m","title":"Deka 8A31DTM 12V 100Ah AGM Deep Cycle Battery - Group 31, Marine","description":"\u003cp\u003eThe Deka Marine Master 8A31DTM by Deka is a 12-volt deep cycle battery known for its AGM (Absorbed Glass Mat) chemistry, providing a 100Ah (amp hour) capacity at the 20-hour rate. It is crafted specifically as a Group 31 size marine battery, targeting applications such as trolling motors and other marine power needs. This battery offers a robust option for those looking for reliable 12V marine battery performance.\u003c\/p\u003e\u003cp\u003eDesigned for deep cycle use, this Deka battery handles partial discharges well, with a recommended depth of discharge around 50%, which supports a longer cycle life compared to traditional flooded batteries. Its maintenance-free, valve-regulated design means no watering or acid handling is necessary. The sealed, spill-proof construct allows for installation in various positions without leakage concerns, typical for AGM marine batteries.\u003c\/p\u003e\u003cp\u003eThe battery measures within the Group 31 dimensions with sturdy terminals designed for marine use. It features a durable casing suited for the tough environments encountered on watercraft. Its terminal type includes a dual configuration, accommodating different hookup styles common in marine settings. The battery is designed to function across a range of operating temperatures typical of marine environments.\u003c\/p\u003e\u003cp\u003eThis marine battery suits a variety of equipment including boat trolling motors, fish finders, and other onboard electronics requiring steady deep cycle power. It also finds use in RV house systems and solar setups, demonstrating versatile utility. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eBacking this unit is a warranty term that covers typical marine battery needs, manufactured under precise standards that ensure quality and performance. Although not specified, customers can anticipate professional-grade reliability from Deka, a brand recognized in the battery market. This makes it a sound choice for those requiring dependable marine power with local service support.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 31 Deep Cycle, 12V 100Ah: Sealed AGM designed for marine trolling motors, RV house power, and solar storage applications with spill-proof construction.\u003c\/li\u003e\n\u003cli\u003eCycle Life and Performance: Rated for approximately 50% depth of discharge, offering longer cycle life compared to flooded batteries and maintenance-free operation.\u003c\/li\u003e\n\u003cli\u003eConstruction and Safety: Valve-regulated and fully sealed, allowing installation in various orientations without maintenance or acid handling.\u003c\/li\u003e\n\u003cli\u003eApplication Specific: Ideal for powering marine trolling motors, fish finders, RV systems, and solar banks, ensuring steady power on the water and off-grid.\u003c\/li\u003e\n\u003cli\u003eWarranty and Build: Supported by a standard warranty and built to meet reliable marine battery standards, suitable for use in Northeast Ohio climates.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869912756500,"sku":"8a31m","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/33f8e3e0-d217-43fb-bdca-fa9eb9707dd4.jpg?v=1775919087"},{"product_id":"12crv110","title":"Crown 12CRV110 12V 110Ah AGM Deep Cycle Battery - Group 31, USA Made","description":"\u003cp\u003eThe Crown 12CRV110 offers 12 volts and 110 amp hours of capacity, built with AGM lead acid chemistry tailored for deep cycle use. This Group 31 battery meets the demands of renewable energy and off-grid applications, ensuring reliable energy storage for critical systems. Crown’s reputation for quality shines through in this battery, which is made in the USA.\u003c\/p\u003e\u003cp\u003eThis AGM deep cycle battery is built to tolerate frequent deep discharges, maintaining strong cycle life with a recommended 50% depth of discharge for optimal longevity. Thanks to its valve-regulated, spill-proof design, it requires no maintenance such as watering and can be installed in various positions safely, unlike flooded batteries that need consistent venting.\u003c\/p\u003e\u003cp\u003ePhysical specs line up with industry standards for Group 31, measuring near 13 inches in length, 6.7 inches in width, and just over 8.5 inches in height, while weighing about 60 pounds. SAE post terminals provide a familiar and secure connection method suitable for many power setups. This size accommodates typical battery racks without modification.\u003c\/p\u003e\u003cp\u003ePowering equipment like solar battery banks, off-grid and RV deep cycle systems, this Crown battery stands ready for sustained, dependable use. Its rugged AGM build copes well with environmental stresses common in renewable energy installations. Available for immediate pickup at Bulldog Battery in Willoughby, Ohio, serving Northeast Ohio with over 35 years of battery expertise.\u003c\/p\u003e\u003cp\u003eBacked by a two-year replacement warranty specifically for renewable energy use, this battery combines American manufacturing quality with trusted performance. Crown and Bulldog Battery provide a combination that professionals and homeowners can rely on for long-term power solutions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 31 Deep Cycle, 12V 110Ah: Absorbed Glass Mat technology built for off-grid power, renewable energy, and RV applications, with standard SAE post terminals.\u003c\/li\u003e\n\u003cli\u003eDurable Cycle Life: Engineered for frequent deep discharges with maintenance-free, spill-proof construction, perfect for renewable energy use.\u003c\/li\u003e\n\u003cli\u003eRugged AGM Construction: Valve-regulated, leak-resistant casing enables safe installation without watering or ventilation needs.\u003c\/li\u003e\n\u003cli\u003eApplication Focused: Powers solar battery banks, off-grid systems, and RV deep cycle setups for consistent energy storage.\u003c\/li\u003e\n\u003cli\u003eMade in USA with a two-year renewable energy warranty; delivers trusted reliability from Crown and Bulldog Battery. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crown Battery","offers":[{"title":"Default Title","offer_id":44869927665940,"sku":"12crv110","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/21001321-38dd-4d2f-9be0-a5fce7a52640.png?v=1776617681"},{"product_id":"mar-1000x-1","title":"Crown MAR-1000X 12V 800CCA Flooded Starting Battery - Group 27, Marine, USA Made","description":"\u003cp\u003eThe Crown MAR-1000X is a 12-volt flooded lead-acid battery built for high-performance marine engine starting. This Group 27 battery delivers 1000 Marine Cranking Amps and 800 Cold Cranking Amps with a 75Ah rating, making it a reliable choice for starting engines on boats and other marine crafts. This battery clearly reflects Crown's commitment to quality and durability.\u003c\/p\u003e\u003cp\u003eIts flooded design requires routine maintenance, including monthly water level checks and topping off with distilled water. The battery’s structure allows it to withstand marine vibrations, which makes it dependable in the demanding marine environment. Crown backs this battery with a two-year warranty reflecting confidence in its cycle life and durability.\u003c\/p\u003e\u003cp\u003eMeasuring approximately 10.19 inches long, 6.81 inches wide, and 9.5 inches high, this Group 27 battery weighs around 45.5 pounds. It uses standard lead-acid construction with removable caps for access to water levels. Connections typically require nuts tightened securely with pliers rather than wing nuts for safe installation.\u003c\/p\u003e\u003cp\u003eThis starting battery is tailored specifically for marine engines, where reliable power and vibration resistance are critical. It’s suitable for boats relying on strong battery performance to start their motors. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eCovered by a 2-year warranty and proudly made in the USA, the Crown MAR-1000X offers proven reliability for marine starting applications. Its build and specs offer peace of mind to boat owners who need a solid start every time on the water.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFlooded Lead-Acid Group 27 Starting Battery: 12V with 1000 MCA and 800 CCA designed for marine engines and boats\u003c\/li\u003e\n\u003cli\u003eDurable Vibration Resistance: Built to handle marine conditions with routine maintenance and two-year warranty\u003c\/li\u003e\n\u003cli\u003eFlooded Construction with Removable Caps: Requires water level checks and filling with distilled water to ensure longevity\u003c\/li\u003e\n\u003cli\u003eMarine Engine Starting Applications: Ideal for powering boat motors and other marine equipment requiring reliable starts\u003c\/li\u003e\n\u003cli\u003eMade in the USA with 2-Year Warranty: Quality manufacturing backed by a solid warranty and industry experience\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crown Battery","offers":[{"title":"Default Title","offer_id":48686721270036,"sku":"MAR-1000X","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/bd73c8b5-84f4-4b71-81f0-4e073822d887.jpg?v=1776617352"},{"product_id":"crown-crv31m-battery-31marine-12volt-dual-post-110ah","title":"CROWN CRV31M 12V 105Ah AGM Deep Cycle Battery - Group 31, Marine, USA Made","description":"\u003cp\u003eThe Crown CRV31M from Crown Marine Batteries is a 12V deep cycle battery offering 105Ah capacity. This AGM dual post battery, part of the Group 31 size category, is engineered specifically for marine use, delivering reliable power where you need it most. Known for durability, it carries the trusted Crown brand and is proudly made in the USA.\u003c\/p\u003e\u003cp\u003eThis battery features sealed AGM technology, which means it’s maintenance free with a valve-regulated, spill-proof design. It supports a 50% depth of discharge, providing dependable performance and a cycle life that holds up against typical flooded marine batteries. The AGM construction allows installation in varied positions without concerns about leaks.\u003c\/p\u003e\u003cp\u003ePhysically, the CRV31M measures approximately 13.0 inches in length, 6.6 inches in width, and 9.4 inches in height, with a weight around 70 pounds. It utilizes dual post terminals suitable for marine-related equipment connections. These dimensions and terminals conform to the BCI Group 31 standard, common in many boat applications.\u003c\/p\u003e\u003cp\u003eThis model powers marine trolling motors and other onboard electrical systems that demand steady, long-lasting energy. It’s also suitable for other applications requiring a robust 12V marine battery. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eThe CRV31M comes with reliable coverage backed by a brand known for marine battery expertise. With its manufacture in the USA and a solid warranty, it offers peace of mind to boaters seeking a dependable power source. Contact Bulldog Battery to ensure you have the power needed for your next outing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 31 Deep Cycle, 12V 105Ah: Dual post design tailored for marine trolling motors, boats, and RV house power applications.\u003c\/li\u003e\n\u003cli\u003eDurable Cycle Performance: Supports 50% depth of discharge with maintenance-free AGM technology for extended life and spill-proof operation.\u003c\/li\u003e\n\u003cli\u003eRobust Construction: Valve-regulated AGM build is sealed, leak-proof, and installable in almost any orientation, ensuring safe handling.\u003c\/li\u003e\n\u003cli\u003eMarine and RV Ready: Ideal for powering trolling motors, boat electrical systems, and off-grid house battery setups.\u003c\/li\u003e\n\u003cli\u003eManufactured in the USA with a solid warranty: Crown stands behind its marine battery quality and reliability.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bulldog Battery, Inc.","offers":[{"title":"Default Title","offer_id":49462862151956,"sku":"AGM31M","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/4e1de343-c615-491b-a01f-9502a9070df1.webp?v=1776615177"},{"product_id":"crown-27t-36-12v-115ah-flooded-deep-cycle-group-27","title":"Crown 27T-36 12V 115Ah Flooded Lead Acid Deep Cycle Battery - Group 27, Commercial Use","description":"\u003cp\u003eThe Crown 27T-36 deep cycle battery from Crown offers 12 volts and 115 amp hours using flooded lead acid chemistry, especially suited for commercial power needs. This Group 27 battery design supports equipment that requires reliable, steady energy output through a proven flooded system.\u003c\/p\u003e\u003cp\u003eIt is rated for a 50% depth of discharge to provide a solid balance between usable capacity and service life. As is common with flooded batteries, it requires regular maintenance including watering and venting to maintain optimal operation in heavy-duty commercial environments.\u003c\/p\u003e\u003cp\u003eThis battery conforms to standard Group 27 dimensions and comes with terminals typical for flooded lead acid designs, making installation simple and compatible with many commercial machines. Its sturdy construction is made to handle demanding conditions.\u003c\/p\u003e\u003cp\u003eThe Crown 27T-36 is a dependable power source for commercial equipment such as golf carts, floor scrubbers, material handling vehicles, and mobility scooters. It is in stock and ready for same-day pickup at Bulldog Battery in Willoughby, Ohio, serving customers throughout Northeast Ohio with over 30 years of expertise.\u003c\/p\u003e\u003cp\u003eBacked by a 3-year warranty, this Crown flooded battery reflects the brand’s commitment to durability and trusted performance in commercial deep cycle applications. It is manufactured in the USA, ensuring quality craftsmanship you can rely on.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFlooded Lead Acid Group 27, 12V 115Ah: Reliable flooded battery designed for commercial equipment like golf carts and floor scrubbers.\u003c\/li\u003e\n\u003cli\u003e50% Depth of Discharge Support: Maintains steady cycle life with recommended watering and venting for commercial use.\u003c\/li\u003e\n\u003cli\u003eStandard Group 27 Build: Includes typical terminals and robust casing for easy installation and heavy-duty durability.\u003c\/li\u003e\n\u003cli\u003ePowers Commercial Machines: Suitable for golf carts, floor scrubbers, material movers, and mobility scooters.\u003c\/li\u003e\n\u003cli\u003e3-Year Warranty and USA Made: Supported by a 3-year limited warranty and built in the United States with dependable quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crown Battery","offers":[{"title":"Default Title","offer_id":49513460171028,"sku":"27T36","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/fefa2d53-9284-4443-8796-f9b0a02a1ea0.jpg?v=1776518384"},{"product_id":"lithium-rhino-lr12v120ah-m-dual-purpose-lithium-marine-battery","title":"Lithium Rhino LR12V120AH-M 12V 120Ah Dual Purpose Lithium Marine Battery – 1,200 CCA Cranking, LiFePO4 IP67 (Battery Only)","description":"\u003cp\u003eMost boats carry two kinds of battery for two different jobs: a starting battery for the outboard and a deep-cycle battery for everything else. The Lithium Rhino LR12V120AH-M is a dual purpose lithium marine battery built to handle both from one case. It's rated for 1,200 cold cranking amps to turn the motor over and holds 120 amp-hours to run the trolling motor, fish finder, and livewell pump once you're on the water.\u003c\/p\u003e\n\n\u003ch2\u003eA Lithium Marine Starting Battery That Also Runs the House\u003c\/h2\u003e\n\u003cp\u003eThis is the one battery in the Rhino marine line that cranks an engine. The 24V and 36V Rhino packs are deep cycle only. They'll run a trolling motor all day, but they aren't built for the short, heavy draw an outboard starter asks for. The 12V Dual Cranking model is. Lithium iron phosphate holds its voltage close to full until the pack is nearly spent, so a long morning on the electronics doesn't leave you with a sluggish start at noon.\u003c\/p\u003e\n\n\u003cp\u003eThen there's the weight. Lithium Rhino ships it at about 30 lb, for 1,536 watt-hours of stored energy plus the cranking rating. If you've lifted a lead-acid starting battery off the deck of a center console, you know that number is a relief.\u003c\/p\u003e\n\n\u003cp\u003eOn the lake, that works out simply. A small aluminum boat with a 12V trolling motor out of Madison or Perry can run one battery for the kicker or outboard and the bow mount together. A bigger boat can use it as the cranking battery and a 12V house battery for the electronics. The dual-layer ABS shell is sealed to IP67, and an LCD on the battery itself shows its charge where you can see it.\u003c\/p\u003e\n\n\u003cp\u003ePlan your wiring before you order. Lithium Rhino doesn't support series connection on its marine batteries, so two of these can't be joined to power a 24V or 36V trolling motor. For that, the single-case 24V or 36V Rhino is the right battery. Give us a call with your engine and your battery setup, and we'll check it with you first.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis is the battery only.\u003c\/strong\u003e Unlike the 24V and 36V Rhino marine kits, it does not come with a charger, console gauge or mounting hardware.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLithium Rhino 12V 120Ah dual purpose IP67 LiFePO4 battery with on-shell LCD\u003c\/li\u003e\n  \u003cli\u003eBluetooth connection to the free Rhino app\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou will need a 12V charger with a lithium (LiFePO4) profile; the lead-acid charger on the boat now won't do the job. Call us and we'll quote a matched 12V lithium charger, or a waterproof onboard model if you want to leave it wired in.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOutboard engine starting (1,200 CCA)\u003c\/li\u003e\n  \u003cli\u003e12V trolling motors\u003c\/li\u003e\n  \u003cli\u003e12V house loads: electronics, livewell pumps, lights\u003c\/li\u003e\n  \u003cli\u003eSingle-battery setups on small boats that start and troll from the same battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1,200 cold cranking amps from a 12V 120Ah LiFePO4 pack\u003c\/li\u003e\n  \u003cli\u003eAbout 30 lb shipping weight\u003c\/li\u003e\n  \u003cli\u003eIP67 dual-layer ABS marine shell with on-shell LCD\u003c\/li\u003e\n  \u003cli\u003eRated for 6,000+ cycles\u003c\/li\u003e\n  \u003cli\u003eBattery management system rated 150A continuous \/ 500A peak\u003c\/li\u003e\n  \u003cli\u003eBluetooth to the Rhino app for state of charge and voltage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eLR12V120AH-M\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Voltage\u003c\/th\u003e\n\u003ctd\u003e12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e120Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEnergy\u003c\/th\u003e\n\u003ctd\u003e1,536Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCold Cranking Amps\u003c\/th\u003e\n\u003ctd\u003e1,200 CCA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eChemistry\u003c\/th\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBMS Discharge\u003c\/th\u003e\n\u003ctd\u003e150A continuous \/ 500A peak\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaximum Charge Current\u003c\/th\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCycle Life\u003c\/th\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWaterproof Rating\u003c\/th\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCase\u003c\/th\u003e\n\u003ctd\u003eDual-layer ABS marine shell\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eAbout 30 lb (shipping weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeries Connection\u003c\/th\u003e\n\u003ctd\u003eNot supported\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCharger, Gauge, Hardware\u003c\/th\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWarranty: 8 Years on the Battery\u003c\/h2\u003e\n\u003cp\u003eLithium Rhino backs the battery (cells, BMS and built-in electronics) for eight years from the date you buy it, and the claim runs through our counter:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYears 1–6:\u003c\/strong\u003e repair or replacement at no cost to you, shipping included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYears 7–8:\u003c\/strong\u003e repair or replacement for a flat $500 deductible; Lithium Rhino covers the rest.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRegister the battery with Lithium Rhino within 120 days of purchase.\u003c\/strong\u003e An unregistered battery is covered for one year only; we'll do the registration with you at the counter. Physical damage, water intrusion, improper installation and charging with a charger Lithium Rhino hasn't approved are not covered, so make sure the 12V lithium charger you pair with it is one Lithium Rhino approves; ask us before you buy one.\u003c\/p\u003e\n\n\u003ch2\u003eLocal Pickup for Lake Erie Boaters\u003c\/h2\u003e\n\u003cp\u003ePick this one up at our Willoughby shop. It's a quick trip for boat owners heading out of Fairport Harbor, Madison, or Perry. Call ahead and we'll confirm one is on the shelf and charged before you make the drive.\u003c\/p\u003e","brand":"Lithium Rhino","offers":[{"title":"Default Title","offer_id":54021707661588,"sku":"LR12V120AH-M","price":799.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/mmexport1783003557778.jpg?v=1790154701"}],"url":"https:\/\/bulldogbattery.com\/collections\/marine-starting-batteries.oembed","provider":"Bulldog Battery, Inc.","version":"1.0","type":"link"}