Eagle Eye Power Solutions


Next Generation Battery Monitoring System

The ground-breaking VIGILANT™ Battery Monitoring System (BMS) with Advanced Multi-Function (AMF) sensors employs several new battery parameters to predict battery condition. Included in these critical parameters are Battery Cell Condition, Battery State of Health, and Battery (at) Risk Factor. These new features are made possible by machine learning algorithms built into the VIGILANT™.

The following key battery parameters are monitored and recorded by the VIGILANT™: string voltage, float current, cell voltage, cell resistance, terminal & connection resistance, cell & ambient temperature, dc ground fault, and electrolyte level.

View More Vigilant™ Support Videos > Troubleshoot with Other Vigilant™ Support Materials >

Web-Based, Remote Battery Monitoring

  • A key advantage of the VIGILANT™ is how it processes measurement data
  • Rather than simply read and display measured parameters, the VIGILANT™ also uses Artificial Intelligence to calculate the state of health (SoH) of the battery
  • Measurement data and analysis is done via a built-in web-server, which can be accessed with any browser
  • The web-based software eliminates the need for a standalone software package and is viewable on a desktop or mobile environment

Predicting Battery Condition

The VIGILANT™ utilizes several technologies new to the battery monitoring industry to predict battery failure:

  • Battery Cell Condition: Using machine learning algorithms to accurately calculate deterioration much earlier than current Ohmic testing methods
  • Battery State of Health: Algorithms encompassing 12 key parameters to estimate the health of the battery as a whole. It includes measured changes in internal & external factors and in all parameters that could identify a potential reduction in anticipated battery life
  • Battery Risk Factor (RF): Employing individual cell SoH along with temperature and ripple current to better predict risk of battery failures
  • True Float Current: VIGILANT’s™ Advanced Multi-Function (AMF) sensors measure true float current without the remanence and temperature problems of Hall-effect transducers

Visit Eagle Eye University for information on our battery training courses.



Working Voltage0.05 – 18.5VDC
Voltage Resolution± 1mV
Post Temperature Resolution± 1ºC
Cell Resistance Resolution± 7μΩ
Strap Resistance ResolutionAt 100μΩ strap r: ± 2μΩ
Float Current ResolutionAt 100μΩ strap r: ± 1mA
Charge/Discharge CurrentMax 800μΩ strap r: ± 0.1%
Max 400μΩ strap r: ± 0.1%
Range: 2,000A
Electrical Supply (from DC supply)36 – 72VDC, 90 – 300VDC, 280 – 580VDC
Other Power Options24V mains supply
System Internal Powervia comms system
Operating Power (from charger)@ 60 cells: 25W
Operating Temp Range-4 – 70 ºC (25 – 158ºF)
Isolation I/P to O/P1000VDC
Test current @ 2.5V20A
Onboard StorageSSD
Memory Capacity20 years of battery data average, expandable for larger systems
Local Data DownloadVia USB port
External ProtocolsModbus TCP/IP, DNP3 (in development)
Network InterfaceRJ45 Ethernet
Dimensions (L x W x H)Monitor: 242 x 200 x 65 mm (9.5 x 8 x 2.6 in)
Sensor: 50 x 50 x 25 mm (2 x 2 x 1 in.)



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