Balmar 12V-48V 350A SG230 SmartShunt Battery Monitor with NMEA 2000 CANbus and M12 DeviceNet Cable Adapter

Integrated Battery Monitoring for NMEA 2000 Marine and Off-Grid Networks

The Balmar SG230 SmartShunt is a specialised battery management solution engineered for seamless integration into NMEA 2000 (N2K) CANbus networks. Designed to support electrical systems operating from 12V to 48V, this high-capacity 350A shunt provides essential electrical telemetry directly to compatible marine multifunction displays (MFDs) and network gauges. Whether you are outfitting a commercial vessel, a recreational cruising yacht, or an advanced mobile power setup, the SG230 ensures accurate visibility over your energy reserves.

Expand Your Balmar SG200 System or Add Second-Bank Telemetry

For vessel and vehicle owners already utilising the Balmar SG200 Battery Monitor, the SG230 serves as a dedicated expansion module. It resolves two common electrical architecture challenges without requiring a complete overhaul of your monitoring hardware:

• NMEA 2000 Network Upgrade: Easily upgrade an existing stand-alone SG200 system to full N2K capability, allowing your battery data to be broadcast across your vessel's primary CANbus backbone.
• Dual-Bank Monitoring: Connect the SG230 to monitor a second deep-cycle house bank alongside your primary battery bank, ensuring comprehensive oversight of separated energy storage zones.

Why Upgrade to Shunt-Based CANbus Monitoring?

Relying on basic voltage-only gauges often leads to inaccurate estimations of battery state of charge, especially under heavy load or charging conditions. By installing a dedicated 350A current shunt directly in the negative return path, the SG230 measures actual amperage flowing in and out of the battery bank. This precision reduces the risk of unexpected power depletion and helps prevent premature battery degradation caused by accidental deep discharges.

As an add-on to the Balmar SG200 system, the SG230 SmartShunt also shares battery data over your existing NMEA 2000 network. The inclusion of a 12-inch (approx. 305mm) M12 DeviceNet cable adapter simplifies physical installation, allowing straightforward connection to standard N2K T-connectors and reducing installation time in tight engine bays or electrical lockers.

Key Features and Capabilities

• Wide Voltage Compatibility: Supports 12V, 24V, 36V, and 48V DC electrical architectures.
• High Current Handling: Rated up to 350A maximum current to accommodate demanding inverters, windlasses, and heavy DC loads.
• Direct N2K Communication: Native NMEA 2000 CANbus protocol support for reliable data transmission to compatible displays.
• Ready-to-Connect Hardware: Supplied with a 12-inch (approx. 305mm) M12 DeviceNet N2K cable adapter for direct backbone integration.
• Modular Scalability: Purpose-built to upgrade existing Balmar SG200 installations or track an auxiliary deep-cycle battery bank.

Upgrade Your Onboard Power Visibility

Take the guesswork out of managing your auxiliary battery banks and integrate your power data directly into your helm or control panel. Order the Balmar SG230 SmartShunt today to upgrade your SG200 system or expand your NMEA 2000 battery monitoring capabilities.