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Bluewater 9800-7101-00 Automatic Charging Relay 12V 140 Amp Marine Battery Manager

Manufacturer

Bluewater

<h3>About Bluewater Enterprises</h3><p>Bluewater Enterprises is a dedicated marine electronics manufacturer with a reputation built on one core principle: <strong>professional-grade electrical components that hold up where it matters most</strong>. Trusted by boaters, marine builders, and offshore enthusiasts alike, Bluewater designs and produces a comprehensive range of marine electrical hardware engineered specifically for the punishing realities of saltwater, vibration, and constant moisture exposure.</p><p>At Bluewater Enterprises, the focus is on combining hands-on knowledge with dependable components to keep your systems running strong. That philosophy is evident across every product in their catalog — from compact panel switches to heavy-duty power distribution hardware.</p><h3>A Marine Electrical System in a Single Catalog</h3><p>Bluewater's product lineup covers virtually every segment of a vessel's electrical architecture. At the heart of their offering are <a href="/18273-bluewater-battery-switch-12204">marine battery switches</a>, a category where the brand has deep expertise. Each marine battery switch is designed for control, safety, and efficiency, providing reliable isolation to manage power flow and protect a vessel's electrical system — built for the marine environment to deliver dependable performance and long-term durability in saltwater and harsh conditions.</p><p>Beyond battery switching, Bluewater produces a robust selection of marine busbars for centralized power distribution. Their heavy-duty marine busbars are designed to organize electrical systems and handle high amperage loads with confidence. These come in configurations ranging from compact 5-position units to dense 20-position busbars with Deutsch connector compatibility.</p><p>Protecting those circuits is the job of Bluewater's marine circuit breakers. Built to protect vital electrical systems, each circuit breaker switch delivers resettable safety and dependable performance in demanding marine environments, designed to withstand moisture, vibration, and harsh conditions for boats, RVs, and other mobile power systems.</p><h3>Built for Real Marine Conditions</h3><p>What sets Bluewater apart from generic electrical suppliers is the degree to which every component is purpose-built for marine use. Their switches are ignition-protected and safe for use aboard gasoline-powered boats, with a versatile case design that allows surface, front panel, or rear panel mounting — constructed from all non-corrosive marine-grade metals and molded in reinforced polycarbonate for long-lasting durability in harsh conditions.</p><p>The brand also manufactures electronic switches, mechanical switches, Deutsch waterproof connectors, sealed relays, NMEA 2000 networking components, receptacles, and rubber protective accessories — essentially everything needed to wire a vessel from stem to stern. Bluewater delivers small-company service with big results, blending hands-on support with professional-grade marine electrical systems.</p><h3>Trusted by Marine Professionals Worldwide</h3><p>Bluewater Enterprises actively exports and partners with distributors worldwide, making their components available through a network of trusted marine retailers and direct OEM channels. Whether you're outfitting a high-performance offshore vessel, a cruising sailboat, or a work boat, Bluewater's catalog offers the precision and durability that serious marine applications demand.</p>

Part Number

9800-7101-00
09/12/2036 11:20 AM
Sale Price

$78.90

In Stock (10)

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Usually delivered within 2 days

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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 Bluewater 9800-7101-00 Automatic Charging Relay (ACR) is an intelligent battery management solution designed for marine and RV dual battery systems. This advanced relay automatically manages battery charging to ensure maximum efficiency while protecting both starter and house batteries from over-discharge.

Key Features:

  • Automatic Battery Management – Connects batteries during charging and isolates them when voltage drops, ensuring each battery maintains optimal charge
  • Start Isolation (SI) Protection – Protects sensitive electronics during engine cranking by temporarily disconnecting house loads, indicated by a slow-flashing yellow LED
  • High-Output Support – Compatible with alternators up to 120 amps continuous (140 amps intermittent)
  • Dual-Color LED Status Indicators – Provides real-time battery status including Fault, Charging, Discharging, Combine, SI, and Override modes
  • Under Voltage Lockout – Prevents the relay from closing when battery voltage is too low (9.5V for 12V systems, 19V for 24V systems)
  • Marine-Grade Durability – IP67 waterproof rating, ignition protected, safe for gasoline-powered boats and RV applications

Technical Specifications:

  • Continuous Rating: 120 Amps
  • Intermittent Rating: 140 Amps
  • Maximum Voltage: 48VDC
  • Recommended Cable Size: 4/0 AWG

Ideal for boats with dual battery systems, fishing boats with trolling motors, RVs with house and chassis batteries, and any application requiring intelligent battery isolation and charging management.

Good experience

Outstanding product and fast delivery. I will continue buying from this company..

Thank you. You are cheaper than West Marine Pro, (although I have to pay shipping,) and faster than Amazon. My poor planning of immediate boat projects, and your products and ease of ordering and two day delivery work well.

Had what I needed and easy to checkout.

Great

Quality product just as advertised quick shipping. No problem it fits Sammy out.

You have the part I need while other auto part stores didn&amp;#039;t. Great!

Ordering went smooth, good prices. Hope everything else goes well.

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