Marine Batteries & Power
Featured Brands
- Newmar®Automatic Power Selector (APS-70)Automatic Power Selector by Newmar®. The Automatic Power Selector (APS) is a solid state device which enables installation of a seamless, redundant power system for critical electronic loads. It selects the higher voltage of two...Engineered to high standardsHigh-grade design delivers extended lifespan$156.38
- Newmar®Battery Integrator (BI-100)Battery Integrator (BI-100) by Newmar®. This product is great for use in all marine applications. It will satisfy the needs of both pleasure boat enthusiasts and ambitious yacht owners. Get this excellent product for your vessel and...Heavy duty silver-plated contactor, continuous duty rated to 100 amps or 200 amp depending on modelVoltage sense circuit, epoxy encapsulated and heavy duty continuous rated solenoid are all designed for use in marine environments$227.85
- Newmar®Battery Temperature Sensor with 25' Cable (TCS-12/24-25)Battery Temperature Sensor with 25' Cable (TCS-12/24-25) by Newmar®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Made with precision and quality in mindBuilt to last$123.75
- Newmar®Battery Temperature Sensor with 40' Cable (TCS-12/24-40)Battery Temperature Sensor with 40' Cable (TCS-12/24-40) by Newmar®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Made with precision and quality in mindBuilt to last$160.41
- Powermania®10' Extension Cable (10522)10' Extension Cable (10522) by Powermania®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Tool Free extensionlnline safety fuses$34.00
- Powermania®15' Extension Cable (10523)15' Extension Cable (10523) by Powermania®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Tool Free extensionlnline safety fuses$39.00
- Powermania®Large Mounting Bracket for 30/40A Chargers (10533)Large Mounting Bracket for 30/40A Chargers (10533) by Powermania®. For Powermania® 30/40 Amp battery chargers. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...Carefully crafted to suit your specific boating needsEngineered to high standards$20.00
- Powermania®Medium Mounting Bracket for 12/20A Chargers (10532)Medium Mounting Bracket for 12/20A Chargers (10532) by Powermania®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Engineered to high standardsHigh-grade design delivers extended lifespan$20.00
- Powermania®Raiser Footing (10510)Raiser Footing by Powermania®. Raiser Footing - Raise charger 5/8" higher off mounting surface. All Turbo MV2 models include Raiser Footing. This product is made of high-quality materials to serve you for years to come. Designed using...Expertly crafted from premium materialsDesigned to match rigorous quality standards$13.00
- Powermania®TurboME2 M106E2 6A 12V 1-Bank Battery Charger (57201)TurboME2 M106E2 6A 12V 1-Bank Battery Charger (57201) by Powermania®. The Turbo Marine E2 Series M106E2 battery charger is a compact, all-aluminum, epoxy-sealed waterproof unit, specifically designed for recharging 12V batteries, even...All aluminum caseEpoxy-sealed for true, long-term waterproof$99.00
- Powermania®TurboME2 M108E2 8A 12V 1-Bank Battery Charger (57202)TurboME2 M108E2 8A 12V 1-Bank Battery Charger (57202) by Powermania®. The Turbo Marine E2 Series M108E2 battery charger is a compact, all-aluminum, epoxy-sealed waterproof unit, specifically designed for recharging 12V batteries, even...All aluminum caseEpoxy-sealed for true, long-term waterproof$119.00
- Powermania®TurboME2 M115E2 15A 12V 1-Bank Battery Charger (57204)TurboME2 M115E2 15A 12V 1-Bank Battery Charger (57204) by Powermania®. The Turbo Marine E2 Series M115E2 battery charger is a compact, all-aluminum, epoxy-sealed waterproof unit, specifically designed for recharging 12V batteries, even...All aluminum caseEpoxy-sealed for true, long-term waterproof$159.00
- Powermania®TurboME2 M208E2 8A 12V 2-Bank Battery Charger (57203)TurboME2 M208E2 8A 12V 2-Bank Battery Charger (57203) by Powermania®. The Turbo Marine E2 Series M208E2 battery charger is a compact, all-aluminum, epoxy-sealed waterproof unit, specifically designed for recharging 12V batteries, even...All aluminum caseEpoxy-sealed for true, long-term waterproof$129.00
- Powermania®TurboMV3 M230V3 30A 12V 2-Bank Battery Charger (58305)TurboMV3 M230V3 30A 12V 2-Bank Battery Charger (58305) by Powermania®. Powermania's Turbo MV3 series M230V3 waterproof battery charger is the new and improved version from the class-leading Turbo MV2 chargers. Featured a brand new look...3 Stage Smart Charge: charges battery in three sequential stage - Bulk, Absorption, and Float. This mechanism is proven to bring battery to its fullest charge, and also to maintain battery from self dischargeAdaptive Loading: A multi-output charger can actively adjust each of its individual output loading and completes charging cycles in the shortest time possible$379.00
- Powermania®TurboMV3 M240V3 40A 12V 2-Bank Battery Charger (58308)TurboMV3 M240V3 40A 12V 2-Bank Battery Charger (58308) by Powermania®. Powermania's Turbo MV3 series M240V3 waterproof battery charger is the new and improved version from the class-leading Turbo MV2 chargers. Featured a brand new look...3 Stage Smart Charge: charges battery in three sequential stage - Bulk, Absorption, and Float. This mechanism is proven to bring battery to its fullest charge, and also to maintain battery from self dischargeAdaptive Loading: A multi-output charger can actively adjust each of its individual output loading and completes charging cycles in the shortest time possible$439.00
- Powermania®TurboMV3 M430V3 30A 12V 4-Bank Battery Charger (58307)TurboMV3 M430V3 30A 12V 4-Bank Battery Charger (58307) by Powermania®. Powermania's Turbo MV3 series M430V3 waterproof battery charger is the new and improved version from the class-leading Turbo MV2 chargers. Featured a brand new look...3 Stage Smart Charge: charges battery in three sequential stage - Bulk, Absorption, and Float. This mechanism is proven to bring battery to its fullest charge, and also to maintain battery from self dischargeAdaptive Loading: A multi-output charger can actively adjust each of its individual output loading and completes charging cycles in the shortest time possible$429.00
- RELiON®12V 100Ah Lithium Deep Cycle Battery (RB100)12V 100Ah Lithium Deep Cycle Battery by RELiON®. Longer runtime = more recreation time with the RB100. This 12V 100Ah deep cycle lithium battery is the perfect replacement from a group 31 AGM, GEL or lead-acid Battery. Weighing in at...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$1,145.59
- RELiON®12V 12Ah Lithium Deep Cycle Battery (RB12)12V 12Ah Lithium Deep Cycle Battery by RELiON®. This 12V 12 ah lithium battery is small but mighty. The RB12 is a deep cycle lithium iron phosphate (LiFePO4) battery. It has twice the power, half the weight and lasts much longer than...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$150.89
- RELiON®12V 200Ah LiFePO4 Lithium Deep Cycle Battery (RB200)12V 200Ah LiFePO4 Lithium Deep Cycle Battery by RELiON®. RB200 is a 12V, 200Ah lithium deep cycle battery. This Group 8D lithium iron phosphate (LiFePO4) battery is ready to replace your heavy lead-acid battery bank in your sailboat, RV...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$2,287.91
- RELiON®12V 300Ah Lithium Deep Cycle Battery (RB300)12V 300Ah Lithium Deep Cycle Battery by RELiON®. RB300 is a 12V, 300Ah lithium deep cycle battery. This Group 8D lithium iron phosphate (LiFePO4) battery is ready to replace your heavy lead-acid battery bank in your sailboat, RV or...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$3,161.85
- RELiON®12V 52Ah Lithium Deep Cycle Battery (RB52)12V 52Ah Lithium Deep Cycle Battery by RELiON®. The RB52 is a 12V 52Ah lithium marine deep cycle battery. The RB52 offers abundant power in a small footprint. It's versatile and compact enough to be used in many marine applications...Strict quality control from start to finishStylish design, top quality, and enduring value$610.50
- RELiON®12V 60Ah Lithium Deep Cycle Battery (RB60)12V 60Ah Lithium Deep Cycle Battery by RELiON®. This 12V 60 Ah, Group 24 lithium iron phosphate battery is a safer, super lightweight alternative to lead-acid in your marine, solar RV, or other deep cycle applications. Coming in under...Strict quality control from start to finishStylish design, top quality, and enduring value$709.46
- RELiON®12V 80Ah Lithium Battery (RB80)12V 80Ah Lithium Battery by RELiON®. This 12V 80 Ah lithium iron phosphate battery is a safer, more lightweight alternative to lead-acid in your marine, solar RV, or other deep cycle applications. At 25 lbs, this battery is less than...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$992.95
- RELiON®24V 100Ah LiFePO4 Battery (RB24V100)24V 100Ah LiFePO4 Battery by RELiON®. This 24V 100Ah lithium iron phosphate battery is perfect in many applications, including marine and electric vehicles. It maintains consistent power and is equipped with an M8 terminal type and...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$2,289.59
- RELiON®24V 52Ah LiFePO4 Battery (RB24V52)24V 52Ah LiFePO4 Battery by RELiON®. This 24V 52Ah lithium iron phosphate battery is perfect in many applications, including marine and electric vehicles. It maintains consistent power and is equipped with an M8 terminal type and a...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$1,189.20
- RELiON®HP-Series 12V 100Ah Lithium Battery for Starting & Cycling (RB100-HP)HP-Series 12V 100Ah Lithium Battery for Starting & Cycling by RELiON®. RELiON's RB100-HP is a Group 31 12V, 100Ah deep-cycle lithium-ion battery built for starting and cycling. The RB100-HP has increased peak amps for starting motors,...MORE USABLE CAPACITY Lithium batteries allow you to use 100% of their capacity, regardless of the rate of dischargeLONGER LIFE up to 10 times longer life than lead-acid batteries, and they still provide 80% of rated capacity after 2,000 cycles$1,264.69
- Raymarine®2-Up Battery Pack and Seal Kit (TA118)2-Up Battery Pack and Seal Kit (TA118) by Raymarine®. The TA118 is a Tacktick 2-Up Replacement Battery Pack & Seal Kit from Raymarine. This product is made of high-quality materials to serve you for years to come. Designed using...Engineered to high standardsHigh-grade design delivers extended lifespan$71.82
- Raymarine®3-Up Battery Pack and Seal Kit (TA119)3-Up Battery Pack and Seal Kit (TA119) by Raymarine®. The TA119 is a Tacktick 3-Up Replacement Battery Pack & Seal Kit from Raymarine. This product is made of high-quality materials to serve you for years to come. Designed using...Engineered to high standardsHigh-grade design delivers extended lifespan$71.82
- Scandvik®Dolphin Premium 20A 24V 3-Bank Battery Charger (99040)Dolphin Premium 20A 24V 3-Bank Battery Charger (99040) by Scandvik®. The Premium range of chargers are perfect for most of today's battery technologies, with a load capacity of up to 400 amps at 12V. These compact chargers are ideally...Digital management with up to date RISC micro-controller4 Charging programs including one for Lithium-Ion-Iron-Phosphate with integrated BMS$890.36
- Sea Dog®Battery Clip Set (426470-1)Battery Clip Set by Sea Dog®. Chrome Plated Steel. Red and Black Alligator Clips by Sea DogExpertly crafted from premium materialsDesigned to match rigorous quality standards$2.54
If you’re having trouble starting your boat or watercraft, or if you’re not experiencing the running time you used to get with trolling motors or electronics, then you may be due for battery replacement. We have replacement batteries for all marine starting, deep cycle, and electronics applications as well as products to meet all your battery related needs, including AC and solar-powered battery chargers, and inverter/chargers; regulators and isolators to control battery charging from the alternator; cables and mounting hardware; and accessories like terminals, remote panels and temperature sensors.
Two kinds of batteries have traditionally been needed for marine use, batteries that could supply the cranking power to reliably start engines, and batteries that could supply power for long periods without recharging, for trolling motors and to power electronic accessories. Instead of making you choose between a starting and a deep cycle battery we can offer you batteries that combine the best of both worlds. These batteries pack pure lead plates with more surface area into the case for exceptional cranking power and longer cycle life. They’re maintenance free, vibration resistant, and will never leak.
In addition to the above we also have replacement batteries for underwater viewing systems, ice fishing packs and other electronic devices. Like our dual purpose starting/deep cycle batteries, these batteries are maintenance-free and of non-spillable design. The best way to ensure you get long service life from your batteries is with proper maintenance and keeping them fully charged. Since our batteries are maintenance-free you never need to add water, and because they are classified non-spillable, you don’t have to be concerned with electrolyte leaking or out-gassing that can cause cable and terminal corrosion. A battery should be brought back to proper charge level after discharge as soon as possible to prevent sulfation, which can shorten battery life, and we have the chargers for the job.
We have battery charger models appropriate for AGM (Absorbed Glass Mat), gel cell, and flooded cell lead-acid batteries. Our selection includes inexpensive portable AC powered maintenance chargers, battery maintainers that remain connected to the battery, solar-powered chargers, and panel-style, permanently mounted chargers that can safely charge multiple battery banks. We also offer inverter chargers that can charge batteries when connected to AC power at the dock, but also convert DC power to AC to operate common household current powered electronics. We have modified sine wave inverter/chargers that are fine for running lights, electric heaters and similar devices, as well as pure sine wave inverter/chargers necessary for operating more sensitive electronics.
When the boat’s engine is running, the alternator charges the battery. Boats commonly have one battery for starting and one or more additional batteries for powering electrical accessories. Battery isolators and automatic charging relays ensure that all batteries receive current for charging, but isolate the batteries when discharging so a weak battery won’t draw down a fully charged battery. This way a depleted auxiliary battery won’t deprive the starting battery of the cranking power necessary to start the engine. We have a large selection of isolators and automatic charging relays in various amperages and for different numbers of batteries. You’ll also find all the other marine battery necessities on our digital shelves including battery boxes and trays, and battery cables and terminals.