Marine Batteries & Power
Featured Brands
- Blue Sea Systems®Dual Entry CableCapDual Entry CableCap by Blue Sea Systems®. Protects against accidental short circuits. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Top lid allows for easy access to connection pointStrict quality control and thorough testing$8.90 - $9.31
- Blue Sea Systems®Standard CableCapStandard CableCap by Blue Sea Systems®. Insulates battery terminals which have added adapter terminals. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design...For batteries with marine adaptor terminals added onStrict quality control and thorough testing$5.38 - $6.20
- Blue Sea Systems®Straight Terminal CableCapStraight Terminal CableCap by Blue Sea Systems®. Insulates battery terminals which have standard automotive posts. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...Designed to fit standard automotive postsStrict quality control and thorough testing$5.29 - $5.55
- Cole Hersee®3/8" Positive Brass Battery Jumper Terminal3/8" Positive Brass Battery Jumper Terminal by Cole Hersee®. Cap Color: Red. 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...Engineered to high standardsHigh-grade design delivers extended lifespan$23.65
- Cole Hersee®5/16" Negative Brass Battery Jumper Terminal5/16" Negative Brass Battery Jumper Terminal by Cole Hersee®. Cap Color: Black. 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...Engineered to high standardsHigh-grade design delivers extended lifespan$23.65
- Moeller Marine®Battery Terminal CoverBattery Terminal Cover by Moeller Marine®. 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, this product by Moeller Marine® will last...Engineered to high standardsHigh-grade design delivers extended lifespan$11.33 - $13.20
- Pro Charging Systems®RealPro Series Waterproof Battery ChargerRealPro Series Waterproof Battery Charger by Pro Charging Systems®. RealPro Series battery chargers are an affordable, reliable and safe battery charging system designed for everyday use. The system is engineered for users who need a...Charges Wet Cell, AGM and most Lithium BatteriesDesigned for use in fresh and salt water$157.00 - $286.74
- Sea Dog®Battery Terminal CoverBattery Terminal Cover by Sea Dog®. 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 quality...Engineered to high standardsHigh-grade design delivers extended lifespan$1.96 - $2.51
- Xantrex®LinkLite Black Dial/Black Bezel 2.5" In-Dash Mount Battery GaugeLinkLite Black Dial/Black Bezel 2.5" In-Dash Mount Battery Gauge by Xantrex®. Defining the amount of energy available in a battery is a complex task since battery age, discharge current and temperature all influence the actual battery...Read your battery bank like a fuel gaugeProvides critical information about the status of your battery bank$368.49
- Xantrex®LinkPro Black Dial/Black Bezel 2.5" In-Dash Mount Battery GaugeLinkPro Black Dial/Black Bezel 2.5" In-Dash Mount Battery Gauge by Xantrex®. Defining the amount of energy available in a battery is a complex task since battery age, discharge current and temperature all influence the actual battery...Read your battery bank like a fuel gaugeProvides critical information about the status of your battery bank$422.10
- Cole Hersee®95060 Series 12/24/36/48 V DC 2/3/5/10 A 4-Way Sealed Ignition Switch95060 Series 12/24/36/48 V DC 2/3/5/10 A 4-Way Sealed Ignition Switch by Cole Hersee®. Durable engineering thermoplastic construction withstands impact, and will not corrode, even on continual exposure to road salt. 95060 switches have...Engineered to high standardsHigh-grade design delivers extended lifespan$22.91 - $41.20
- Ancor®2 AWG Black Battery Cable for 5/16" Stud2 AWG Black Battery Cable for 5/16" Stud by Ancor®. Fits: 5/16" Stud. Ancor Marine Grade Standard Battery Cable Assemblies are manufactured with Ancor's premium UL1426 tinned copper battery cable. The battery cable is fine stranded to...Engineered to high standardsHigh-grade design delivers extended lifespan$19.58 - $32.68
- Ancor®2 AWG Red Battery Cable2 AWG Red Battery Cable by Ancor®. Ancor Marine Grade Standard Battery Cable Assemblies are manufactured with Ancor's premium UL1426 tinned copper battery cable. The battery cable is fine stranded to produce maximum conductivity and...Engineered to high standardsHigh-grade design delivers extended lifespan$23.58 - $32.68
- Ancor®4 AWG Black Battery Cable for 5/16" Stud4 AWG Black Battery Cable for 5/16" Stud by Ancor®. Fits: 5/16" Stud. Ancor Marine Grade Standard Battery Cable Assemblies are manufactured with Ancor's premium UL1426 tinned copper battery cable. The battery cable is fine stranded to...Engineered to high standardsHigh-grade design delivers extended lifespan$16.00 - $25.52
- Ancor®4 AWG Red Battery Cable for 3/8" Stud4 AWG Red Battery Cable for 3/8" Stud by Ancor®. Fits: 3/8" Stud. Ancor Marine Grade Standard Battery Cable Assemblies are manufactured with Ancor's premium UL1426 tinned copper battery cable. The battery cable is fine stranded to...Engineered to high standardsHigh-grade design delivers extended lifespan$16.00 - $25.21
- Mastervolt®EasyView 5 White Dial/Black Bezel 5" x 4.4" Surface Mount Battery MonitorEasyView 5 White Dial/Black Bezel 5" x 4.4" Surface Mount Battery Monitor by Mastervolt®. Waterproof System Monitor with 'daylight readable' display and intuitive touchscreen Controlling your Mastervolt system has never been easier. The...Water proof, 'daylight readable' colour displayIntuitive touch control$436.41
- Balmar®SG200 Black Dial/Stainless Steel Bezel 2.1" In-Dash Mount Battery Monitor KitSG200 Black Dial/Stainless Steel Bezel 2.1" In-Dash Mount Battery Monitor Kit by Balmar®. Balmar has applied recent technology advances to introduce a next generation battery monitor. The SG200 is quite simply the most accurate battery...Learns & Displays All Critical Battery Parameters: State of Charge (SoC%), State of Health (SoH%), Charge/Discharge, Current Flow, Time Remaining, History, Faults & AlertsSupport for All Common Battery Chemistries & Voltages$294.44
- Balmar®SG205 In-Dash Mount Battery Monitor KitSG205 In-Dash Mount Battery Monitor Kit by Balmar®. Balmar has applied recent technology advances to introduce a next generation battery monitor. The SG205 is quite simply the most accurate battery monitor available today. Balmar has...Learns & Displays All Critical Battery Parameters: State of Charge (SoC%), State of Health (SoH%), Charge/Discharge, Current Flow, Time Remaining, History, Faults & AlertsSupport for All Common Battery Chemistries & Voltages$237.20
- Blue Sea Systems®Contura Actuator™ Rotary Switch with 1 LensContura Actuator™ Rotary Switch with 1 Lens by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Mounts on any Blue Sea Systems" Contura SwitchConstructed of thermal plastic polycarbonate with a hard nylon surface overlay$2.69 - $2.77
- Blue Sea Systems®M-Series Mini Dual Circuit Plus™ 12 - 24 V DC 65 A Add-A-Battery KitM-Series Mini Dual Circuit Plus™ 12 - 24 V DC 65 A Add-A-Battery Kit by Blue Sea Systems®. 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...High quality at an affordable priceExpertly made from premium materials$115.62 - $126.70
- Blue Sea Systems®M-Series Mini Plus™ 32 V DC 300 A 3-Position Tinned Copper 2-Circuit Battery SwitchM-Series Mini Plus™ 32 V DC 300 A 3-Position Tinned Copper 2-Circuit Battery Switch by Blue Sea Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...Make before break contact design allows switching between battery banks without power interruptionStrict quality control and thorough testing$48.79
- Blue Sea Systems®M-Series Mini™ 48 V DC 300 A 2-Position On/Off Tinned Copper 1-Circuit Battery Switch with KeyM-Series Mini™ 48 V DC 300 A 2-Position On/Off Tinned Copper 1-Circuit Battery Switch with Key by Blue Sea Systems®. Switches a single battery to a single load group. This top-grade product is expertly made in compliance with...Ignition protected-safe for installation aboard gasoline powered boatsCase design allows surface, front panel, or rear panel mounting$38.71
- Blue Sea Systems®M-Series Mini™ 48 V DC 300 A 2-Position On/Off Tinned Copper 1-Circuit Battery Switch with KnobM-Series Mini™ 48 V DC 300 A 2-Position On/Off Tinned Copper 1-Circuit Battery Switch with Knob by Blue Sea Systems®. Switches a single battery to a single load group. This top-grade product is expertly made in compliance with...High quality at an affordable priceExpertly made from premium materials$38.71
- Blue Sea Systems®M-Series™ 32 V DC 300 A 3-Position Tinned Copper Selector Battery SwitchM-Series™ 32 V DC 300 A 3-Position Tinned Copper Selector Battery Switch by Blue Sea Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...High quality at an affordable priceExpertly made from premium materials$48.79
- Blue Sea Systems®M-Series™ Battery Spare Locking Switch KeyM-Series™ Battery Spare Locking Switch Key by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....Strict quality control and thorough testingOffered at a reasonable price$4.07 - $4.24
- Blue Sea Systems®M-Series™ Battery Spare Switch KeyM-Series™ Battery Spare Switch Key by Blue Sea Systems®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Strict quality control and thorough testingOffered at a reasonable price$6.65 - $7.07
- Dual Pro®Black Dial/Black Bezel 2.1" x 1.25" Surface Mount Battery GaugeBlack Dial/Black Bezel 2.1" x 1.25" Surface Mount Battery Gauge by Dual Pro®. 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, this...Engineered to high standardsHigh-grade design delivers extended lifespan$86.38 - $255.16
- East Penn®2 AWG Black Battery Cable2 AWG Black Battery Cable by East Penn®. 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...Engineered to high standardsHigh-grade design delivers extended lifespan$12.72 - $30.26
- East Penn®2 AWG Red Battery Cable2 AWG Red Battery Cable by East Penn®. 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...Engineered to high standardsHigh-grade design delivers extended lifespan$12.72 - $38.16
- Cole Hersee®75900 Series 6 - 36 V DC 20/125 A Brass 2-Way Battery Switch75900 Series 6 - 36 V DC 20/125 A Brass 2-Way Battery Switch by Cole Hersee®. Designed to disconnect the battery circuit and the alternator or generator field circuit on 6-36 V DC systems This product is great for use in all marine...High quality at an affordable priceExpertly made from premium materials$58.29 - $69.11
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.