NB4 Battery Monitor Kit

Compact BMS Kit, including harness, 2 temperature probes, CT and 5ft harness.

Please choose 48V (default) or 24V

Harness for 4 batteries (default, 4x12V or 4x6V) or 2 batteries (2x12V)

O-ring size 6mm (default), 8/10mm optional

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Product Description

Sentry-NB4 monitor provides powerful functions for online state-of-health battery management for large scale remote telecom cabinets or stations. The compact design makes it suitable for any size indoor/outdoor 24V or 48V system cabinets with 12V or 6V battery blocks. It combines superior data quality and ease of installation for effective remote battery management in accordance with the most recent IEEE standards.

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

Common Applications:

:: Telecommunication Cabinets
:: Cable/Broadband Cabinets
:: Traffic Light Control Cabinets
:: HPMS – Highway Performance Monitoring Systems
:: Solar Powered Radio Stations/Cell Sites


  • Online IR (Internal Resistance) measurement to detect battery failure.
  • Thermal runaway detection and protection control output to interface with most chargers/rectifiers.
  • On-board data analysis for battery health evaluation.
  • Industrial grade, compact design for indoor/outdoor applications.
  • Embedded web pages for remote monitoring.
  • Compatible with MyBattery Platform™ for large scale applications.
  • Integration support for 3rd party network battery management systems


Additional Information

Weight 2 lbs
Dimensions 12 × 8 × 4 in
DC Voltage

48V, 24V

Battery Number

4, 2

O-ring Size

6, 8, 10