Balmar SmartShunt N2K 350A Monitor for SG200

The Balmar SmartShunt N2K 350A expands an SG200 system with current measurement for a second bank plus an NMEA 2000 adapter.

Monitoring a second bank separately is what this adds, and it matters on a boat with house and starting banks worth watching independently. A single-shunt system measures one bank. The starting battery is the one that quietly fails, and without its own shunt nothing reports its condition until it will not crank.

The N2K adapter puts battery data onto the boat's NMEA 2000 network rather than confining it to the monitor display. That means charge state can appear on a chartplotter alongside everything else, which is where people actually look.

A 350-amp shunt measures charge and discharge current at the bank connection. Anything wired around the shunt goes uncounted, so every load and charge source has to pass through it for the reading to be meaningful. Explore more alternator parts and accessories.

• Adds a second bank to an SG200 system
• The starting battery is the one that quietly fails
• N2K puts the data on the chartplotter
• Anything wired around the shunt goes uncounted