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Blue Sea Systems 1830 M2 DC Battery Monitor with 500A Shunt

Manufacturer

Blue Sea Systems

<p>When electrical reliability can mean the difference between a successful voyage and a dangerous situation, marine professionals and enthusiasts turn to Blue Sea Systems. Founded in 1992, this American manufacturer has built a reputation for creating electrical components specifically engineered to withstand the unforgiving marine environment. Every product reflects a commitment to safety standards and real-world performance that has made Blue Sea Systems a leading name in marine and specialty vehicle electrical systems.</p> <h3>Engineering for the Marine Environment</h3> <p>Blue Sea Systems develops and manufactures dependable AC and DC electrical products for marine and specialized vehicle applications, designed in the USA and engineered to excel in challenging environments. The marine environment presents unique challenges—salt spray, constant vibration, temperature extremes, and moisture exposure—that can quickly degrade inferior electrical components. Blue Sea Systems addresses these challenges through careful material selection, rigorous testing protocols, and designs that prioritize both safety and serviceability. Their components are engineered for marine use and align with the intent of ABYC E-11: AC and DC Electrical Systems on Boats and relevant USCG electrical regulations.</p> <h3>Commitment to Safety Standards</h3> <p>Safety standards aren't just guidelines for Blue Sea Systems—they're fundamental to every product design. All Blue Sea Systems marine battery disconnect switches comply with the ABYC C-7 certification, demonstrating their commitment to meeting and exceeding industry safety requirements. The company maintains ABYC-certified employees across multiple departments, from engineering to technical support, ensuring deep expertise in marine electrical system design and installation standards.</p> <h3>Comprehensive Product Range</h3> <p>Blue Sea Systems offers an extensive catalog designed to address every aspect of marine electrical systems. Their <a href="/7262-blue-sea-systems-circuit-breakers-200260">circuit breakers</a> provide resettable overcurrent protection with trip-free designs and clear trip indication for quick diagnostics. For power management, their <a href="/7262-blue-sea-systems-battery-switches-manual-200149">battery switches</a> offer reliable methods for controlling battery banks and disconnecting loads during storage or emergencies, with ABYC C-7 compliance guaranteed.</p> <p>Monitoring system health is critical aboard any vessel, which is why their <a href="/7262-blue-sea-systems-battery-monitors-volt-meters-200146">battery monitors and volt meters</a> provide accurate real-time data to help operators make informed decisions about power usage and charging. The company's <a href="/7262-blue-sea-systems-terminal-blocks-bus-bars-201059">terminal blocks and bus bars</a> create organized, serviceable connection points that simplify installation and future modifications. For keeping batteries properly charged, Blue Sea Systems offers <a href="/7262-blue-sea-systems-battery-chargers-200141">battery chargers</a> engineered with features like automatic charging relay compatibility and proper charge profile management.</p> <h3>Built by Boaters, for Boaters</h3> <p>Blue Sea Systems was founded based on a commitment to create innovative high quality marine electrical products to improve the safety, simplicity, and reliability of boating, with employees who are active boaters applying their passion to designing, developing, and building products. This firsthand experience translates into practical features like modular layouts, standardized footprints, and installer-centric designs that streamline panel work and serviceability. The result is a product line that addresses real challenges faced on the water, backed by comprehensive technical documentation and support resources that help both professionals and DIY enthusiasts complete installations with confidence.</p>

Part Number

1830
06/21/2036 8:34 AM
Sale Price

$296.72

In Stock (9)

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems M2 DC State of Charge Monitor provides accurate battery bank monitoring by measuring actual amperage flow rather than relying on voltage readings alone. This precision approach gives you the same confidence in your battery capacity as a fuel gauge provides for your gas tank, helping you avoid unexpected power loss on the water or road.

The M2 monitors one battery bank using the included 500A shunt to track current flowing in and out of your system. The high-resolution OLED display shows multiple critical parameters including state-of-charge percentage, hours remaining, amp hours (Ah) remaining, and total charging cycles. The bright display features auto-dimming technology and provides superior contrast and readability compared to traditional LED displays.

Key Features:

  • Amperage-based monitoring for accurate state-of-charge calculations
  • Includes 500A shunt for complete installation
  • Bright OLED display with auto-dimming and high contrast
  • Built-in MOSFET External Circuit Relay for controlling external circuits based on monitored values
  • Programmable 92dB alarm with multiple alert types
  • IP66 waterproof rating with gasketed face
  • Compatible with 12V, 24V, and 48V systems (8-70V range)
  • Low power consumption: 0.3W minimum, less than 1W maximum

Technical Specifications:

  • Voltage range: 7-70V DC with 0.01V DC resolution
  • Current range: -500 to 500A (up to 5000A with optional shunts)
  • Display size: 1 3/16"H x 2 1/4"W (28mm x 55mm)
  • Overall dimensions: 3 1/16"H x 3 1/16"W x 17/32"D (78mm x 78mm x 14.05mm)
  • Mounting hole: 2 1/8" diameter x up to 1" deep
  • Glass-reinforced nylon case construction
  • No fasteners required for installation

Alarm Functions: High current, high/low voltage, and low battery alerts with programmable thresholds.

Backed by a three-year warranty. Weight: 0.25 lbs (0.11 kg).

Products specifications

Dimensions

3 1/16"H (78mm) x 3 1/16"W (78mm) x 17/32"D (14.05mm)

Type

Multi-Function Monitor

Best Use

12V DC Systems24V DC Systems48V DC Systems

Display Type

DigitalState of ChargeVoltageCurrent

Warranty Details

Three Years

Great so far. I'll know better once I receive and get to use it.

Good experience, however, I was hoping that 'FREE SHIPPING' would be the standard for Autoplicity.

Very quick ordering, however I was unable to use the PayPal function.

Very fast website and easy to use.

Thanks

Great so far

Ordered MSD window switch. Best price on the internet and received package within 3 days of ordering. Great place to do business.

Very good price. Super quick delivery. Will def. buy from them again. Highley recomend them

fast and easy website to order from

Vehicle Specific part look up was a bit off on the bilstein products. Hard to find the rears required for my truck.

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