Battery monitor Victron Energy BMV-702 BLACK 12V 500A with Bluetooth

The Victron Energy BMV-702 BLACK 12V 500A with Bluetooth is a battery monitor designed to measure and display battery voltage, current and state of charge for 12 V battery systems with high-current shunts up to 500 A. The unit records battery usage and historical data to provide insight into charge and discharge cycles, helping to manage power on boats, recreational vehicles and off-grid installations. Integrated Bluetooth allows wireless connection to mobile devices for real-time monitoring and configuration without opening panels or accessing wiring directly.

Advantages

The monitor provides accurate coulomb-counting to estimate state of charge and remaining battery capacity, combined with direct voltage and current readouts for immediate system status. Built-in Bluetooth simplifies monitoring and setup via a smartphone or tablet, while a clear display makes readings easy to interpret at a glance. The device supports data logging so you can review historical consumption and charging patterns to optimize battery use and maintenance.

Suitable for

• 12 V battery banks on boats and yachts
• Recreational vehicles (motorhomes, campervans)
• Off-grid and backup power installations
• Solar power systems and battery storage monitoring

Key specifications

• Nominal system voltage: 12 V
• Current measurement capacity: up to 500 A with compatible shunt
• Measurements: battery voltage, current, ampere-hours (Ah) consumed, state of charge (SoC)
• Data logging: stores historical charge/discharge information
• Connectivity: integrated Bluetooth for wireless monitoring and configuration
• Display: digital screen showing voltage, current and state of charge

How to use

Install the monitor in a visible location and connect the included shunt in series with the negative battery cable according to the manufacturer’s installation instructions. Connect the monitor display to the shunt and ensure all connections are tight and corrosion-free. Power the system and use the display to view real-time voltage, current flow and state of charge. For wireless access, pair the monitor with a mobile device using the Victron Bluetooth app to view measurements, review logged data and adjust settings as needed.

Recommendations

Calibrate the monitor after initial installation by entering the correct battery capacity and performing a full charge cycle. Regularly inspect electrical connections and the shunt for cleanliness and tightness. Use the logged data to set appropriate charge thresholds and to plan maintenance or battery replacement when capacity declines.