HDM Battery Conditioning and Monitoring Solutions

Keep an eye on your battery’s State of Charge and State of Health with HDM’s Battery Fuel Gauge. Maintain an equal voltage across series-connected batteries with HDM’s Battery Equalizer. More control, more power.

Battery Fuel Gauge Sensor - BFGS500-24-CAN

HDM’s BFGS500-24-CAN Battery Fuel Gauge Sensor provides real-time information for 24VDC system battery performance via CAN-Bus: State-of-Health, State-of-Charge, Hour Remaining, Battery Voltage, Current, and Temperature. Our patented tracking algorithm with automatic calibration precisely determines the state of the battery and eliminates guesswork on reserve capacity. Available in a standard or ruggedized waterproof version, the BFG Battery Fuel Gauge will accurately monitor your battery performance.

  • Real-time battery information – SOH, SOC, Time Remaining (Hr), Voltage (V), Current (A), and Temperature (T) via display, CAN-Bus, or RS232

  • Available for 24VDC systems

  • Automatic self-calibration and continuous monitoring

  • Voltage transient protection

  • Waterproof and ruggedized construction (sensor)

  • NSN: 2590-01-577-4183n


Battery Separator - BAS200-24S

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HDM’s Battery Separator is your intelligent charge priority system at sea and on the road.

Our battery separator uses a solenoid priority system to control multi-bank charging, assist in on-demand engine starting, and protect respective batteries from the excessive drain. It ensures the Main bank is fully charged before charging the Auxiliary bank. The Battery Separator will automatically deactivate during low voltage conditions to prevent the main battery from becoming over drained. The Auxiliary Start feature combines the two banks (Main + Auxiliary) for the additional engine starting boost.

Compact and economical, the BAS Series battery separator is the ultimate solution to your multi-bank battery systems. Available for 12VDC and 24VDC systems.

  • Available up to 500ADC continuous 24VDC

  • Uni or bi-directional configuration

  • Automatic under/over voltage protection

  • Auxiliary start feature - combines the main and auxiliary bank

  • Voltage transient protection

  • Ignition-proof construction

  • Available with IP65 option


Battery Separator - BAS200-12D

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HDM’s Battery Separator is your intelligent charge priority system at sea and on the road.

Our battery separator uses a solenoid priority system to control multi-bank charging, assist in on-demand engine starting, and protect respective batteries from the excessive drain. It ensures the Main bank is fully charged before charging the Auxiliary bank. The Battery Separator will automatically deactivate during low voltage conditions to prevent the main battery from becoming over drained. The Auxiliary Start feature combines the two banks (Main + Auxiliary) for the additional engine starting boost.

Compact and economical, the BAS Series battery separator is the ultimate solution to your multi-bank battery systems. Available for 12VDC and 24VDC systems.

  • Available up to 500ADC continuous 12VDC

  • Uni or bi-directional configuration

  • Automatic under/over voltage protection

  • Auxiliary start feature - combines the main and auxiliary bank

  • Voltage transient protection Ignition-proof construction

  • Available with IP65 option


Battery Equalizer - EQ48-12

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HDM’s Battery Equalizer solutions are your smart solution to balancing voltage across the entire battery series.

Our Battery Equalizer is a bi-directional circuit that balances the voltage between four or more individual batteries connected in series during charge, discharge, and idle periods. It prevents severe under and over-voltage (common in series connections) which can compromise the performance, reliability, and life of your battery system. Equalized batteries are able to receive a full, clean charge, thereby increasing battery pack power, capacity, and life. Give your mission the support it deserves. Available for 24VDC and 48VDC systems.

  • Available in 24V/12V, 48V/12V, & 48V/24V configurations

  • Up to 5ADC maximum equalization pulse current

  • Advanced bi-directional circuitry provides automatic equalization during charge, discharge, or idling

  • Utilizes patented passive energy transfer technology

  • Ideal for high voltage systems in series-connected string

  • LED status indicator with battery diagnostic scheme

  • Protection against under/over voltage and over current conditions

  • Easy installation and maintenance-free operation

  • Meets IP65 ingress protection requirements


Battery Equalizer - EQ48-24

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HDM’s Battery Equalizer solutions are your smart solution to balancing voltage across the entire battery series.

Our Battery Equalizer is a bi-directional circuit that balances the voltage between four or more individual batteries connected in series during charge, discharge, and idle periods. It prevents severe under and over-voltage (common in series connections) which can compromise the performance, reliability, and life of your battery system. Equalized batteries are able to receive a full, clean charge, thereby increasing battery pack power, capacity, and life. Give your mission the support it deserves. Available for 24VDC and 48VDC systems.

  • Available in 24V/12V, 48V/12V, & 48V/24V configurations

  • Up to 5ADC maximum equalization pulse current

  • Advanced bi-directional circuitry provides automatic equalization during charge, discharge, or idling

  • Utilizes patented passive energy transfer technology

  • Ideal for high voltage systems in series-connected string

  • LED status indicator with battery diagnostic scheme

  • Protection against under/over voltage and over current conditions

  • Easy installation and maintenance-free operation

  • Meets IP65 ingress protection requirements

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