Megger BVM Battery Voltage Monitor

The Megger BVM battery voltage monitors allow for capacity testing of industrial battery banks
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Megger BVM Battery Voltage Monitor (CJ-59092, CJ-59093 and CJ-59096)

Megger’s BVM battery voltage monitors allow for capacity testing of industrial battery banks usually found in distribution sub-stations, telecoms installations and computer network UPS systems.

When connected into a circuit with a battery load unit such as the Megger TORKEL unit, the BVM enables the engineer to perform a completely automated battery bank capacity test, according to IEC test methods and NERC/FERC requirements.

The BVM is designed in modular form where one BVM device is used for each battery or "jar" in the string to be tested. One BVM for each battery connects to the next in a “daisy-chain” fashion, thereby providing easy and economical expandability to meet the testing requirements for small-to-large battery bank systems.

Select the most applicable kit from the drop down menu above:

  • Megger BVM150 - set of 16 battery voltage monitors
  • Megger BVM300 - set of 31 battery voltage monitors
  • Megger BVM600 - set of 61 battery voltage monitors

Key features

  • Automates battery voltage measurement during capacity tests
  • "Daisy-chain" design allows expandability up to 120 units
  • High accuracy and stability for precise data collection
  • Integrates with TORKEL Win and PowerDB Test Data Management software
  • Wide voltage range
  • Easy set-up

Specifications are valid at an ambient temperature of +25°C, (77°F).


  • Application field: The instrument is intended for use in medium-voltage substations and industrial environments.
  • Altitude: <2000 m (6500 ft) above sea level.


  • Operating 5°C to +50°C (41°F to +122°F)
  • Storage & transport 0°C to +60°C (32°F to +140°F)


  • 5% – 95% RH, non-condensing
  • CE-marking: LVD 2006/95/EC, EMC 2004/108/EC


  • Mains voltage: 100 / 240 V AC, 50 / 60 Hz
  • Power consumption (max):50 VA
  • Protection: Over voltage, reverse voltage, voltage transients, ESD
  • Dimensions - BVM unit: 75 x 64 x 25 mm (3” x 2.5” x 1”)
  • Dimensions - Carrying case: 575 x 470 x 205 mm (22.6” x 18.5” x 8.1”)
  • Weight - BVM unit 0.07 kg (0.15 lbs) With accessories and carrying case
  • Weight - BVM system of 31 units: 8.8 kg (19 lbs)
  • Weight - BVM system of 61 units: 12.5 kg (27 lbs)


  • Maximum number of channels: 120
  • Voltage ranges: 0-5 V DC and 0-20 V DC
  • Resolution: 1.00 mV both ranges
  • Inaccuracy: < 0.1% of full scale ±0.01 V DC
  • Battery: string voltage 300 V DC (max)
  • Measurement input impedance: 1 MΩ