• Sentry-0412S2 and Sentry-0412S2NB are two cost-effective battery monitors for outdoor cabinets with 6V or 12V batteries. One unit can monitor 8x6V or 4x12V, 1 or 2 strings.

    Sentry-0412S2 provides Modbus integration via RS232 or RS485.

    Sentry-0412S2NB is a drop-in Ethernet model, compatible with MyBattery Platform.

  • Sentry-0412S6 and Sentry-0412S6NB cover applications for telecommunication -48V systems with 12V batteries, up to 6 strings per unit.

    Sentry-2402E for 24x2V, low cost, enhanced 1-wire mode

    Sentry-1202W2 for 24V system with 12x2V, 2-wire mode high precision IR

    Sentry-0212S12 for 24V system with 12V blocks, up to 24 blocks (12 strings) per unit

    Compatible with Ethernet or wireless DTU to MyBattery Platform™ for large scale implementations

  • Sentry-2402W2 is a high precision monitor for telecommunication -48V systems with 24x2V high capacity batteries.

    Onboard Ethernet port or external wireless DTU to MyBattery Platform™

  • Sentry-4012HV is designed for medium size UPS high voltage battery systems with 30 to 40 blocks of 12V battery. It utilizes our 3rd generation technologies for high performance and easy installation.

  • Sentry-6002NEMA is a powerful battery monitoring system for substations 110V or 220V DC system with vented (flooded) or valve regulated lead acid batteries or NiCad batteries. It has been re-designed based upon our field proven BM6500 (1996) and BM6800 (2007) models to provide effective remote battery management according to the IEEE updated standards.

    It also works for large UPS systems with 240x2V cells.

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Welcome to BatteryDAQ, a leading innovator of battery monitoring solutions. Our pioneering battery monitoring technologies, networking, and informatics platform provide the ability to reliably monitor millions of batteries worldwide. There is no stronger endorsement of our product than the thousands of installations around the world utilizing our battery monitoring technologies.

Bringing innovations to the battery industry since 1992

made in usa  UL-1    
 RoHs CE  UL-2    

Comprehensive, Large Scale Battery Monitoring for Cell Sites and Cabinets

The powerful MyBattery Platform™ and Sentry Battery Monitor™.

Coming Event: IEEE DC Power Utility Conference & Exhibition, Oct 27-28th, 2014, Long Island, New York. Large scale implementation of comprehensive battery monitoring for utility substations

News and Events ...


Internal resistance/Conductance monitoring and trending has been widely accepted by the battery industry as a way to evaluate battery state-of-heath. Our cutting-edge technologies have changed the way the batteries in Telecom, data centers, utilities, oil pipelines etc are monitored. Beginning with our precise measurement, through data transfer and database, to trending analysis and finally the web server, our seamless solutions allow our customers to access their battery data at any time.

MyBattery Platform™ is the global battery monitoring and management system. It enables large companies with numerous sites the ability to minimize their maintenance costs. It also serves small businesses which may lack professional personnel a cost effective solution for checking and interpreting the data from their battery monitoring devices.

Article: "The Battery Holy Grail - Battery Monitoring Evolution for Cell Towers and OSP Cabinets " - OSP Magazine 2013 August

Article: "Let Someone Else Worry - About Your Batteries" - UK Best Mag - Winter 2013 Issue (pdf)

1491-2012  -  IEEE Guide for Selection and Use of Battery Monitoring Equipment in Stationary Applications

1188-2005  -  IEEE Recommended Practice for Maintenance, Testing, and Replacement of Valve-Regulated Lead-Acid (VRLA) Batteries for Stationary Applications

450-2010  -  IEEE Recommended Practice for Maintenance, Testing, and Replacement of Vented Lead-Acid Batteries for Stationary Applications


Online Battery Condition Monitoring Systems

Our full line of battery monitoring products, software, and informatics platform offer our customers complete and cost-effective solutions.

  1. Sentry compact battery monitors
  2. Sentry NEMA 4 (IP65) BMS
  3. Customized/OEM products

combined with Ethernet & Wireless devices, allow us to provide solutions for an unlimited number of battery sites.

Handheld Battery Inspector

Exceptional tool for a single site visit or to compliment 24/7 online monitoring, Sentry Battery Inspector is designed for high precision and productivity.

  • Fully compliant with IEEE and PRC-005-2 standard for stationary battery maintenance
  • Time-saving design optimizes “snap shot” maintenance programs for a large number of sites
  • String voltage, float current, temperature, individual cell voltage, internal resistance and connection resistance
  • Instantly uploads measurements to database with site information using 3G/4G wireless

Data Acquisition (DAQ) Modules

TM-30W2 and TM-40HV are two outstanding battery data acquisition modules for engineers and researchers to conduct a battery test easily, safely and accurately.

Full Product Line

Sentry Product Selection Chart (pdf, 0.2M)