{"title":"Dual Purpose Marine Batteries","description":"\u003cp\u003eOn a small boat, one battery usually has to do two jobs. It has to crank your outboard the first time, every time, then keep the fish finder, lights, and accessories running all day without quitting on you at the far end of the lake. That's what a dual purpose marine battery is built for, and it's what most weekend boaters around Willoughby actually need: starting power and deep-cycle staying power in one box, so you're not wiring up a separate house bank for a boat that doesn't need one.\u003c\/p\u003e\n\u003cp\u003eHere's the honest part: doing both is a compromise. A pure starting battery hits hard but doesn't like being run down. A deep-cycle is built to be drained and recharged but cranks softer. A good dual purpose battery splits the difference, and the best dual purpose marine battery for you comes down to how hard you actually push it. We test and install these every spring as folks get their boats back in the water, so we can tell you quickly whether a dual purpose is the smart call or whether your setup really wants two dedicated batteries.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhich dual purpose marine battery fits how you boat\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMost of it comes down to chemistry and fit. Here's how the options stack up:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlooded lead-acid:\u003c\/strong\u003e the value pick. Proven, affordable, and plenty of battery for a small outboard and light electronics like a fish finder. Top it off and check the water level each season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAGM dual purpose marine battery:\u003c\/strong\u003e sealed and spill-proof, and more tolerant of getting run down and knocked around in a rough chop. A solid step up when you want less maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLithium dual purpose marine battery:\u003c\/strong\u003e the lightest option by far, with more usable capacity and a much longer service life. It costs more up front and pays off if you boat often or want to cut weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup sizes 24, 27, and 31:\u003c\/strong\u003e we stock the common marine groups so the battery fits your tray and the terminals line up right.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA lot of our boating customers run Lake Erie and the inland lakes from Mentor and Painesville on over, and they're all trying to launch in the same few weeks every spring. Bring your old battery in and we'll test it free. About one in ten times the battery isn't even the problem, and we'll tell you that straight rather than sell you one you don't need.\u003c\/p\u003e\n\u003cp\u003eWe've been matching batteries to boats from this Willoughby shop for 36 years, and we'll stay with it until you've got the right dual purpose marine battery for how you actually use your boat.\u003c\/p\u003e\n\u003cp\u003eCome in, ask questions, and get a straight answer on your boat battery needs. Call us at 440-942-2555 or stop by the shop on Vine St., and we'll help you get on the water for the season.\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":"bulldog-battery-31t-36-marine-deep-cycle-battery","title":"Bulldog Battery 31T-36 Marine Deep Cycle Battery - 12 Volt 120AH, 3 year warranty","description":"\u003ch1\u003e31T-36 Marine Deep Cycle 12V Battery\u003c\/h1\u003e\n\u003cp\u003ePower your marine adventures with confidence using the Bulldog Battery 31T-36 Marine Deep Cycle Battery. This robust Group 31 marine battery delivers exceptional performance for boats, RVs, and marine applications that demand reliable, long-lasting power. With 850 cold cranking amps and proven deep cycle technology, the 31T-36 ensures your vessel starts strong and runs dependably, trip after trip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Starting Power\u003c\/strong\u003e: With an impressive 850 CCA rating, this Group 31 marine battery ensures reliable engine starts even in challenging conditions. Whether you're facing cold morning launches or demanding electrical loads, the 31T-36 delivers the cranking power your marine engine needs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended Runtime Capability\u003c\/strong\u003e: The deep cycle design allows for repeated charge and discharge cycles without compromising battery life. This means longer days on the water with consistent power for your marine accessories and electronics.\u003c\/p\u003e\n\u003ch2\u003eBuilt to Marine Industry Standards\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Quality Assurance\u003c\/strong\u003e: The Group 31T-36 Marine Deep Cycle Battery meets or exceeds original equipment manufacturer specifications, ensuring compatibility and performance that matches or surpasses your vessel's original battery requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProven Longevity\u003c\/strong\u003e: Engineered for excellent lifespan, this marine battery is designed to withstand the harsh marine environment including vibration, temperature fluctuations, and corrosive conditions that can quickly deteriorate lesser batteries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance-Free Operation\u003c\/strong\u003e: The sealed lead acid construction eliminates the need for regular water additions or complex maintenance procedures, allowing you to focus on enjoying your time on the water rather than battery upkeep.\u003c\/p\u003e\n\u003ch2\u003ePrecision Engineering for Marine Applications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOptimal Size and Fit\u003c\/strong\u003e: The BCI Group 31 size (13\" L x 6.75\" W x 9.38\" H) provides maximum power density while fitting standard marine battery compartments. The left-positive terminal configuration ensures proper cable routing and installation.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Performance\u003c\/strong\u003e\u003cbr\u003e- Cold Cranking Amps (CCA): 850\u003cbr\u003e- Voltage: 12V\u003cbr\u003e- Battery Type: Marine Deep Cycle\u003cbr\u003e- Chemistry: Sealed Lead Acid\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003cbr\u003e- BCI Group Size: 31\u003cbr\u003e- Length: 13 inches\u003cbr\u003e- Width: 6.75 inches\u003cbr\u003e- Height: 9.38 inches\u003cbr\u003e- Weight: 62 pounds\u003cbr\u003e- Terminal Position: Left Positive\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality Assurance\u003c\/strong\u003e\u003cbr\u003e- Part Number: 31T-36\u003cbr\u003e- Warranty: 2-Year Coverage\u003cbr\u003e- OEM Specification Compliance: Meets or Exceeds Standards\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the Bulldog Battery 31T-36?\u003c\/h2\u003e\n\u003cp\u003eWhen you invest in the 31T-36 Marine Deep Cycle Battery, you're choosing a power solution that combines reliability, performance, and value. This Group 31 marine battery is engineered for boaters who demand consistent performance and won't accept compromise when it comes to their vessel's electrical system.\u003c\/p\u003e\n\u003cp\u003eThe deep cycle design ensures you'll have dependable power for extended periods, while the high CCA rating guarantees strong engine starts. Plus, with our comprehensive 2-year warranty, you can purchase with confidence knowing your investment is protected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReady to Power Your Next Adventure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDon't let battery failure cut your marine adventures short. Upgrade to the reliable performance of the Bulldog Battery 31T-36 Marine Deep Cycle Battery today.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eExperience the Bulldog Battery difference – where quality meets performance on the water.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bulldog Battery, Inc.","offers":[{"title":"Default Title","offer_id":44869649465620,"sku":"31T-36","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/6179cd99-b5ae-4140-ab00-6da9806fc3a0__98449.webp?v=1778937038"},{"product_id":"8a27","title":"Deka 8A27 12V 95Ah AGM Deep Cycle Battery - Group 27, Marine and RV","description":"\u003cp\u003eThe Deka 8A27 is a 12V, 92Ah AGM deep cycle battery crafted for marine, RV, and solar applications. This Group 27 battery combines durable AGM technology with a capacity designed to support sustained power needs in these environments. Deka's proven design assures a reliable power source for demanding deep cycle performance.\u003c\/p\u003e\u003cp\u003eBuilt as a valve-regulated AGM battery, it offers maintenance-free operation with a spill-proof structure that can be installed in various positions without concern. It is rated for a 50% depth of discharge, extending its cycle life compared to traditional flooded batteries and minimizing upkeep like watering or venting.\u003c\/p\u003e\u003cp\u003eThis Group 27 battery measures 12.72 by 6.8 by 9.31 inches and weighs 61.5 pounds. It features secure terminal connections suitable for marine and RV systems. These physical specs make it a practical choice for installations where space and reliability matter.\u003c\/p\u003e\u003cp\u003eSpecifically, this deep cycle battery powers marine trolling motors, RV house energy systems, and solar storage setups, providing consistent and dependable energy for off-grid applications. 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\u003eIt comes with a 24-month warranty and reflects Deka’s reputation in robust deep cycle battery manufacturing. Customers will find it a solid option supported by local availability and trusted brand quality in Northeast Ohio.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Deep Cycle Group 27: 12V 95Ah battery ideal for marine trolling motors, RV house power, and solar storage solutions with durable AGM construction.\u003c\/li\u003e\n\u003cli\u003eCycle Life and Depth of Discharge: Rated for 50% DOD providing extended cycle life relative to traditional flooded designs, suitable for off-grid and heavy-use applications.\u003c\/li\u003e\n\u003cli\u003eValve-Regulated AGM Build: Maintenance-free, spill-proof, compatible with multiple orientations, no watering or venting needed, designed for safety and longevity.\u003c\/li\u003e\n\u003cli\u003eApplication Specific: Powers marine trolling motors, RV house systems, and solar banks with reliable sustained energy delivery.\u003c\/li\u003e\n\u003cli\u003eWarranty and Brand Reputation: Includes manufacturer warranty, backed by Deka's established quality in deep cycle battery manufacturing. Available locally in Willoughby, OH.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869659132180,"sku":"8A27","price":329.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/e0bf8412-de7a-4cfb-bc11-21d035f6999f.jpg?v=1775904611"},{"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":"8g4d","title":"Deka 8G4D 12V 183Ah Gel Deep Cycle Battery - Group 8D, Marine \u0026 RV","description":"\u003cp\u003eThe Deka 8G4D is a 12-volt gel deep cycle battery rated at 183 amp hours, engineered for marine and RV applications. This battery’s gel chemistry ensures consistent, reliable power delivery suited for heavy-duty deep cycle use. Deka has crafted this battery to meet the rigorous demands encountered in boating and recreational vehicle systems.\u003c\/p\u003e\u003cp\u003eIts maintenance-free design features a valve-regulated, spill-proof construction eliminating the need for watering, and supports a steady depth of discharge for longer cycle life. Compared to traditional flooded batteries, this gel battery handles repetitive cycling with greater resilience and reduced upkeep. The sealed design also means you won’t have to worry about leaking acid or ventilation issues.\u003c\/p\u003e\u003cp\u003eWith a Group 4D size, the battery measures 20.77 inches long, 8.43 inches wide, and 9.85 inches tall, tipping the scales at 128 pounds. It comes equipped with auto terminals for straightforward, secure connections. Its robust gel construction contributes to enhanced durability across various temperature conditions common in marine and RV environments.\u003c\/p\u003e\u003cp\u003eThis battery is well-suited for powering RV house electrical systems, solar battery banks for off-grid setups, and marine deep cycle power needs like trolling motors. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your trusted Northeast Ohio battery specialists with over 35 years of experience.\u003c\/p\u003e\u003cp\u003eDeka backs this gel deep cycle battery with a two-year warranty, underscoring its commitment to dependable performance and long service life. This makes the 8G4D a reliable choice for anyone needing steady, maintenance-free deep cycle power storage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGel Chemistry Group 4D Deep Cycle, 12V 183Ah: Sealed gel construction with auto terminals designed for marine trolling motors, RV house systems, and solar off-grid use.\u003c\/li\u003e\n\u003cli\u003eEnhanced Cycle Life: Maintenance-free gel battery offers a solid depth of discharge and extended durability without watering or venting.\u003c\/li\u003e\n\u003cli\u003eValve-Regulated, Spill-Proof Design: Non-spillable gel battery suitable for installation in multiple positions, ensuring safe, leak-free operation.\u003c\/li\u003e\n\u003cli\u003eMarine and RV Focused Applications: Powers trolling motors, RV electrical systems, solar battery banks, and other demanding deep cycle equipment.\u003c\/li\u003e\n\u003cli\u003eTrust and Warranty: Deka brand with a 2-year warranty, known for durable batteries made for North American markets.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869659558164,"sku":"8G4D","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/bd0052c3-bed5-4222-a9c7-f5e25618ec0c.webp?v=1775913547"},{"product_id":"bulldog-battery-24t-36-12v-90ah-sla-deep-cycle-marine","title":"Bulldog Battery 24T-36 12V 90Ah SLA Deep Cycle Battery - Group 24T Marine","description":"\u003cp\u003eThe Bulldog Battery 24T-36 delivers dependable 12V power with a 90Ah rating in a sealed lead acid chemistry, tailored for marine use. This Group 24T deep cycle battery is engineered to support extended marine outings, specifically catering to boats and trolling motors. Its sealed design ensures it meets the demands of watercraft applications effectively.\u003c\/p\u003e\u003cp\u003eBuilt to handle consistent cycling, this battery supports a depth of discharge suitable for prolonged use, providing robust recharge cycles without extensive maintenance. The sealed lead acid construction is maintenance-free and designed to prevent spills, making it safe to operate in various orientations typical in marine settings.\u003c\/p\u003e\u003cp\u003eMeasuring approximately 8.88 inches in length, 6.81 inches in width, and 9.75 inches in height, this battery weighs 48 pounds. It features a positive left terminal configuration, standard for Group 24T sizes. Its rugged build is resistant to marine environments and ready for the challenges of boating conditions.\u003c\/p\u003e\u003cp\u003eThis battery is an excellent fit for powering a range of marine electronics including trolling motors, GPS units, fish finders, and onboard lighting systems. Available for same-day pickup at Bulldog Battery in Willoughby, Ohio, it comes from a trusted local source renowned across Northeast Ohio for batteries with over three decades of expertise.\u003c\/p\u003e\u003cp\u003eCovered by a 3-year warranty, the Bulldog Battery 24T-36 is assembled to deliver consistent performance and durability. With reliable manufacturing practices behind it, this battery offers a solid foundation for anyone looking to maintain reliable power on the water. Prompt availability at Bulldog Battery means you can rely on expert support when you need it most.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSealed Lead Acid Group 24T Deep Cycle, 12V 90Ah: Engineered for marine use including trolling motors, onboard electronics, and lighting, with a positive left terminal for standard fitment.\u003c\/li\u003e\n\u003cli\u003eDurable Cycle Performance: Supports regular deep cycling with maintenance-free, sealed design to prevent spills and eliminate watering needs for marine applications.\u003c\/li\u003e\n\u003cli\u003eMarine-Grade Construction: Compact 8.88 x 6.81 x 9.75 inches size, weighing 48 lbs, designed to withstand marine conditions with reliable terminal placement.\u003c\/li\u003e\n\u003cli\u003eSpecifically Designed for Marine Equipment: Suitable for trolling motors, GPS devices, fish finders, and other essential marine electronics.\u003c\/li\u003e\n\u003cli\u003e3-Year Warranty and Local Expertise: Backed by Bulldog Battery's 3-year coverage and over 35 years of experience, with fast availability at Willoughby, Ohio store.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bulldog Battery, Inc.","offers":[{"title":"Default Title","offer_id":44869766873364,"sku":"24T-36","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/a320d479-5604-4fdd-b4a7-30f7d6fd4338.webp?v=1777749896"},{"product_id":"8a27m","title":"Deka 8A27M 12V 92Ah AGM Deep Cycle Battery - Group 27, Marine \u0026 RV","description":"\u003cp\u003eThe Deka 8A27M is a 12V, 92Ah AGM deep cycle battery designed for marine, RV, and solar applications. This heavy-duty Group 27 battery uses AGM chemistry, offering a sealed, valve-regulated design suited for demanding environments while maintaining maintenance-free operation.\u003c\/p\u003e\u003cp\u003eThis battery supports a depth of discharge rating that helps maximize cycle life compared to traditional flooded batteries. Its AGM construction makes it spill-proof and allows installation in various positions, eliminating the need for watering or venting, which helps reduce upkeep in marine and recreational uses.\u003c\/p\u003e\u003cp\u003ePhysically, the Deka 8A27M measures 12.75 inches long, 6.75 inches wide, and 9.38 inches tall, weighing 75 pounds. It comes with standard terminals appropriate for Group 27 deep cycle setups and is built to withstand the conditions typical of marine and outdoor use, ensuring reliable performance throughout its service life.\u003c\/p\u003e\u003cp\u003eThis battery fits perfectly with marine trolling motors, RV house systems, solar storage setups, and other off-grid uses. 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 Deka 8A27M is backed by a 3-year warranty and reflects Deka’s long-standing reputation in battery manufacturing. Having this battery in your equipment assures reliable power and peace of mind with professional-grade durability and support.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 27 Deep Cycle, 12V 92Ah: Sealed maintenance-free AGM battery built for marine trolling motors, RV house power, and solar energy systems.\u003c\/li\u003e\n\u003cli\u003eDurable Cycle Performance: Supports a deep discharge profile, extending cycle life well beyond traditional flooded batteries for longer-lasting power.\u003c\/li\u003e\n\u003cli\u003eSpill-Proof AGM Design: Valve-regulated, leak-proof construction allowing installation in multiple orientations with zero watering or ventilation needs.\u003c\/li\u003e\n\u003cli\u003eApplication Specific: Powers marine trolling motors, RV house systems, solar battery banks, and other off-grid or mobile energy requirements.\u003c\/li\u003e\n\u003cli\u003eWarranty and Manufacture: Covered by a 3-year warranty, produced with Deka's established quality standards for reliable, heavy-duty service. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869867471124,"sku":"8a27m","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/dc79ed67-ddd6-48b3-af45-74facb797fa3.jpg?v=1775910567"},{"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":"8a24m","title":"Deka 8A24 12V 79Ah AGM Deep Cycle Battery - Group 24, Marine \u0026 RV","description":"\u003cp\u003eThe Deka 8A24 is a 12-volt, 79 amp-hour deep cycle battery designed with AGM chemistry for reliable marine and RV power. Deka’s sealed AGM construction ensures this Group 24 battery fits both applications comfortably, providing steady performance without the need for maintenance.\u003c\/p\u003e\u003cp\u003eThis battery offers a solid cycle life and supports a 50% depth of discharge rating, which means you can expect dependable power over many cycles. Thanks to its valve-regulated design, it stays spill-proof and maintenance-free, so there’s no need to check fluid levels or worry about ventilation.\u003c\/p\u003e\u003cp\u003ePhysically, the 8A24 measures 10.9 by 6.8 by 9.31 inches and weighs 52 pounds, making it manageable for most setups. It features standard terminal configurations suitable for a variety of installations and can operate well under typical temperature ranges encountered in marine and RV environments.\u003c\/p\u003e\u003cp\u003eCommonly used for trolling motors, RV house power, and off-grid solar storage, the Deka 8A24 is a versatile choice. It powers mobility applications effectively and is available for same-day pickup at Bulldog Battery in Willoughby, Ohio, your trusted Northeast Ohio battery specialists with more than 35 years of service.\u003c\/p\u003e\u003cp\u003eThis model carries a two-year warranty and is built to provide lasting reliability. Choosing a Deka battery means investing in proven American battery technology that professionals count on for consistent deep cycle use.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 24 Deep Cycle: 12V 79Ah sealed design for marine trolling motors, RV house power, solar storage, and mobility applications.\u003c\/li\u003e\n\u003cli\u003eReliable Cycle Life: Supports 50% depth of discharge with a durable valve-regulated design for long service.\u003c\/li\u003e\n\u003cli\u003eMaintenance-Free Construction: Spill-proof AGM battery, valve-regulated and installable in multiple positions without venting concerns.\u003c\/li\u003e\n\u003cli\u003eVersatile Applications: Suitable for trolling motors, RV systems, solar banks, and mobility use cases requiring steady deep cycle power.\u003c\/li\u003e\n\u003cli\u003eWarranty and Trust: Two-year warranty, American-made with Deka's reputation for durable, professional-grade deep cycle batteries.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":44869982454036,"sku":"8A24M","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/e0133067-85fd-4352-8cf5-93faf0365332.jpg?v=1775919612"},{"product_id":"8a31dtm","title":"Deka 8A31DTM 12V 105Ah AGM Deep Cycle Battery - Group 31, Marine \u0026 RV","description":"\u003cp\u003eThe Deka 8A31DTM is a 12-volt AGM deep cycle battery with a 105 amp hour capacity, crafted specifically for marine and RV applications. This Group 31 battery features Absorbent Glass Mat technology, offering a sealed, maintenance-free solution engineered for consistent deep cycle performance.\u003c\/p\u003e\u003cp\u003eThis battery supports a 50% depth of discharge, providing a reliable cycle life suitable for demanding use. The valve-regulated, spill-proof design means you can install it in any position without needing routine watering or ventilation, which simplifies maintenance compared to flooded alternatives.\u003c\/p\u003e\u003cp\u003ePhysically, the Deka 8A31DTM fits the Group 31 form factor with dimensions of 12.93 by 6.74 by 9.40 inches and weighs 67.5 pounds. It comes equipped with dual terminals (DT), making connections straightforward in various setups. Its valve-regulated construction also enhances durability and safety for marine and RV environments.\u003c\/p\u003e\u003cp\u003eThis battery is well-suited to power marine trolling motors, RV house electrical systems, solar storage solutions, and other recreational vehicle equipment that demands dependable off-grid 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 2-year warranty and produced under Deka's stringent manufacturing standards, this AGM deep cycle battery offers professional-grade reliability. Choosing this battery supports your marine or RV setup with proven performance and local availability to keep you powered when it matters most.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAGM Group 31 Deep Cycle, 12V 105Ah: Sealed, maintenance-free AGM battery designed for marine trolling motors, RV house power, and solar storage applications with DT terminals.\u003c\/li\u003e\n\u003cli\u003eCycle Life and Depth of Discharge: Supports 50% DOD with a durable cycle life built for consistent heavy-duty use.\u003c\/li\u003e\n\u003cli\u003eValve-Regulated AGM Construction: Spill-proof, leak-resistant, installable in any orientation with no watering or ventilation needed.\u003c\/li\u003e\n\u003cli\u003eDesigned for Marine, RV, and Solar Applications: Powers trolling motors, RV electrical systems, solar banks, and other recreational off-grid uses.\u003c\/li\u003e\n\u003cli\u003eWarranty and Origin: Comes with a 2-year warranty and manufactured by Deka to meet high-quality standards for reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Deka","offers":[{"title":"Default Title","offer_id":50221093093652,"sku":"","price":369.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/5625\/4228\/files\/f7aeeb68-c49e-498c-b807-1f7637163681.jpg?v=1775919328"},{"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\/dual-purpose-marine-batteries.oembed","provider":"Bulldog Battery, Inc.","version":"1.0","type":"link"}