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Sea-Dog Line 4227901 Smart Dual Battery Isolator 12V

Manufacturer

Sea-Dog Line

<h3>About Sea-Dog Line</h3><p>Few names in the marine hardware world carry the same weight as <strong>Sea-Dog Line</strong>. Rooted in the early 1920s and headquartered in Everett, Washington, the company traces its origins to a uniquely inventive sales strategy: its founder, Hans &ldquo;Action&rdquo; Broson Sneve, showcased marine hardware by sailing his wares up and down the Pacific Coast aboard the M.V. Sea-Dog &mdash; a 55-foot cruiser that became the brand&rsquo;s namesake. That spirit of hands-on, on-the-water ingenuity has defined Sea-Dog ever since.</p><p>Today, Sea-Dog Line operates as the Sea-Dog Corporation, a third-generation family business that has expanded from a regional Pacific Coast distributor into a nationally recognized supplier of marine, industrial, and rigging hardware. The company serves everyone from professional shipbuilders to weekend boaters, earning repeat recognition from the National Marine Distributors Association for its supply chain standards and product quality.</p><h3>What Sea-Dog Line Makes</h3><p>Sea-Dog&rsquo;s catalog is remarkably broad. At its core, the brand specializes in providing hardware that must hold up in some of the harshest environments on earth &mdash; saltwater, UV radiation, temperature swings, and constant vibration. To meet those demands, Sea-Dog builds its products from marine-grade materials including 304 and 316 stainless steel, investment-cast bronze, chrome-plated brass, and UV-resistant injection-molded polymers.</p><p>The product lineup spans anchoring and docking hardware, deck fittings, cabin and hatch hardware, chain and rigging components, electrical panels, lighting, plumbing fittings, ventilation equipment, boat hooks, rod holders, and much more. Whether you&rsquo;re outfitting a new build or replacing a worn component, Sea-Dog likely has the part you need.</p><p>Among Sea-Dog&rsquo;s most well-regarded marine electrical and windshield products is their comprehensive lineup of <a href="/7549-sea-dog-line-windshield-wiper-motor-8824">Windshield Wiper Motors</a>. Engineered specifically for the marine environment, these motors feature corrosion-resistant aluminum and stainless steel construction, adjustable sweep angles, and a &ldquo;coast-to-park&rdquo; function that automatically returns the blade to its set position when power is cut &mdash; exactly the kind of thoughtful design detail that sets Sea-Dog apart from generic alternatives.</p><h3>Why Boaters Trust Sea-Dog Line</h3><p>Sea-Dog&rsquo;s longevity in the marine hardware market is no accident. The brand has built its reputation on producing components that align with ABYC (American Boat and Yacht Council) standards, giving boat builders and DIY installers confidence that each part meets recognized safety benchmarks. Products are designed for both recreational and commercial applications, meaning whether you&rsquo;re a weekend angler or a working captain, Sea-Dog hardware is built for your level of use.</p><p>With over a century in the marine industry, an ever-expanding product catalog, and a family-run culture that keeps quality at the forefront, Sea-Dog Line remains one of the most trusted names on the water. Browse the full Sea-Dog lineup to find the right hardware for your vessel.</p>

Part Number

4227901
09/12/2036 9:39 AM
Sale Price

$80.27

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sea-Dog Line Smart Dual Battery Isolator is designed for marine dual battery systems where reliable power management is critical. This intelligent isolator automatically charges both batteries simultaneously when the engine is running, then isolates them when the engine is off to protect your starting battery.

Key Features:

  • Automatic dual battery charging and isolation for worry-free operation
  • 12-volt DC system compatibility for most marine applications
  • Ensures starting battery maintains full charge and is always ready for engine cranking
  • Protects starting battery from discharge by house loads when engine is off
  • Solid-state design with no moving parts for reliable performance
  • Voltage-sensitive relay technology automatically engages and disengages
  • Ideal for boats with separate house and starting battery banks

This isolator eliminates the need for manual battery switches and prevents the common problem of draining your starting battery while using onboard accessories. Perfect for sailboats, powerboats, and other marine vessels requiring dependable dual battery management.

Products specifications

Amps

140

Size

2-5/8" x 2-5/8" x 2"

Voltage

12

Season greetings, Almost perfect experience, it will be nice to filter front break fit parts from rear.

Delivery was on time like they said

Simple, ouick and easy. Can'the get any better

Great shopping experience

ok

After shopping around at my local auto parts stores and not liking what they had in stock I decided to go on line and BANG found Autoplicity.com and they had just exactly the black finished lug nuts that I was looking to give my Trailblazer SS a different look with the stock wheels, 5 ⭐️ 's and definitely will recommend them, thanks again Autoplicity.

Great fast service

nice service

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