Battery Monitors

SG200 Battery Monitor

Balmar’s Expandable, Next Generation Monitor

  • Learns & Displays All Critical Battery Parameters
    • State of Charge (SoC%)
    • State of Health (SoH%)
    • Charge/Discharge Current Flow
    • Time Remaining
    • History, Faults & Alerts
  • Support for All Common Battery Chemistries & Voltages
    • Including Lead Acid, Lithium (LiFePO4), Standard AGM,TPPL AGM, Carbon Foam AGM, and GEL Batteries
    • Supports 12V-48V Battery Banks
    • Typically 97% Accurate for SoC% within 2 Cycles
    • Auto-Calibrating
    • Does not Lose Accuracy with Age
  • Large, Bright Color Display
    • Sunlight Readable, Configurable & Dimmable
    • 60 Degree Viewing Angle
    • Fits in Standard 2 1/16″ Gauge Socket
  • Expandable Architecture
    • Support Multiple Displays (Optional)
    • Supports Multiple Battery Banks (Optional)
    • Standard Support for 2 Start Batteries (Voltage Only)
    • Simple, easy-to-install Point-to-Point Network
  • Optional Smartphone/Bluetooth® Gateway
    • Free iOS and Android Apps (Requires Bluetooth® Gateway PN SG2-0300)
    • View All Parameters on your Phone
    • Download Product Updates

SG200 Battery Monitor
Balmar’s Expandable, Next Generation Monitor

Balmar has combined recent technology advances to introduce a next generation battery monitor. The SG200 is quite simply the most accurate battery monitor available today. Balmar has combined the best features of its 1st generation SmartgaugeTM with many advantages of a shunt-based amp-hour counting system. Further, we’ve designed a device architecture which facilitates multiple Displays or multiple SmartShunts to be added to the network-allowing the boater to monitor multiple energy storage banks simultaneously from multiple locations.

In addition, the SG200 Color Display is easy to read, configurable and fits any standard 2 1/16″ gauge socket. Now you can determine your battery(s) condition from anywhere on the vessel or vehicle with multiple Displays, or simply add the optional Bluetooth® Smartphone App to keep information in your pocket!


State of Charge (SoC%) State of Health (SoH%) Charge/Discharge Amps Time Remaining
Accurate display of your battery’s State of Charge after just two discharge cycles Proprietary self-calibrating algorithm determines how your battery has aged from its original capacity. Displays the real-time current flowing in or out of your house battery. Time remaining until empty when discharging, or time remaining until full when charging.

SG2-0300 Bluetooth® GatewayMonitor and Upgrade From Your Phone or Tablet

The Essential Companion to all SmartLinkTM Products

  • Keep up-to-date with SG200 Upgrades
  • Easy Configuration
  • Monitor Real-Time Performance
  • BLE 5.0 for Extended Range
  • Monitor and Program the MC-618 Regulator
  • The SG210 Includes both Monitor and Gateway
Part NumberPart DescriptionExplanation / Includes
SG200Battery Monitor Kit, 12V-48VStandard Unit: Includes Color Display, SmartShunt, Smartlink Com Cable
SG205Includes SmartShunt & Bluetooth® Gateway Only (No Color Display)
SG210Includes Color Display, SmartShunt, Smartlink Com Cable, Bluetooth® Gateway
SG230Battery Monitor Kit, 12V-48V,
NMEA 2000
Includes N2K SmartShunt & Adapter Cable, Color Display, Com Cable, Bluetooth® Gateway
SG235Includes N2K SmartShunt & Adapter Cable, Bluetooth® Gateway Only (No Color Display)
SG2-0100SmartShunt, SG200, 350A, 12V-48VAdd a SmartShunt for Additional Bank: Includes SmartShunt and SmartLink Com Cable
SG2-0130SmartShunt, SG230, 350A, 12V-48VAdd an N2K SmartShunt & Adapter Cable to Upgrade an Existing SG200 System
SG2-0200Color Display, SG200, 2″Add a Color Display to an existing SmartLink Network
SG2-0300Gateway, SG200, Bluetooth®Optional 39″ Bluetooth® Gateway for SmartPhone App
SG2-0400Com Cable, SG200, 10mOptional SmartLinkTM Com Cable (10 meter) for Extensions or MC-618 Connection
SG2-0402Mounting Plate, SG200Mounting Adapter from SmartGaugeTM to SG200 Display
SG2-0403Com Cable, SG200, 5mOptional SmartLinkTM Com Cable (5 meter) for Extensions or MC-618 Connection
SG2-0404Com Cable, SG200 & MC-618Optional SmartLinkTM Com Cable for Connection to MC-618 Regulator Connection
SG2-0405Com Cable, SG230, NMEA 2000, 12″Com Cable, SG230 (N2K) & SG240 (RV-C), M12 (DeviceNet), 12″
SG2-0408Com Cable, 3-Way AdapterCom Cable, SmartLinkTM Connection Extender

SG200 Specifications

Standard Configuration: 1 Bank per SmartShunt Device
2 Start/Auxiliary Voltage Sense Lines
(Up to 32 devices including Displays and
SmartShunts can be added to a single network)
Display Values:State of Charge (SoC%)
State of Health (SoH%)
Voltage (V)
Charge/Discharge Current (A)
Time Remaining (Hrs)
History, Faults & Alerts (Consult User Manual)
Supply Voltage Range:8V – 60V DCMax Ah Capacity:1250 Ah (per SmartShunt)
Average Supply Current:Display On: 20 mA @ 12V Sleep Mode: 10 mA @ 12VCommunications Cable:4 wire, 22 AWG, Shielded 4 pin Deutsch DT Style
SmartShunt Operating Temperature:-40oC to +85oC (-40oF to +185oF)Grounding:Negative Battery Connection
SmartShunt Max Current:600A Instantaneous (10 minutes @ ambient) 350A Continuous (For Higher Currents Consult User Manual)SmartShunt Dimensions:Length: 4.87″ (123.7 mm) Width: 3.34″ (84.8 mm) Height: 2.01″ (50.9 mm)
Weights:SmartShunt: 0.62 lbs Color Display: 0.16 lbsColor Display Dimensions:Bezel Diameter: 2.37″ (60 mm) Base Diameter: 2.05 (52 mm) Depth with Attachment Cable: 2.75″ (70 mm)
Standards Compliance:CE EMC Directive 2014/30/EU ROHS 2 Directive 2011/65/EUProtection Rating:IP65 (Display), IP67 (SmartShunt)