Megger BITE2 Calibration Instruments
  • Megger BITE2 Calibration Instruments
  • Megger BITE2 Calibration Instruments

Megger BITE2


Battery Impedance Tester, 7000 Ah, 110/230 VAC, 50/60 Hz



The Megger 246002B BITE 2 Battery Impedance Tester determines the condition of lead-acid and nickel-cadmium cells up to 7000 Ah. An advanced feature set has been developed that includes Pass/Warning/Fail calculations based on a user-entered baseline value. The BITE 2 and its accessories fit into a sturdy canvas case with a shoulder strap.

The 246002B BITE 2 Battery Impedance Tester works by applying a test current across the battery string while on-line, then measuring the total current (AC ripple and test current) and the voltage drop of each cell/jar. It then calculates the impedance. The BITE 2 also measures DC voltage and interconnection (strap) resistance to help determine the overall condition of the entire battery string's electrical path from terminal plate to terminal plate.

The receiver of the BITE 2 stores the readings in its internal memory. These measurements, along with other maintenance data such as ambient and pilot cell temperatures and AC ripple current, assist in determining the overall condition of battery systems. Impedance measurements with the BITE 2 may be made part of a battery maintenance program with readings taken and recorded semi-annually for flooded batteries and quarterly for VRLA.

Unlike load cycle testing that involves substantial downtime and repeated discharges, using the instruments require no battery discharge, nor do they stress the battery in any way compared to other techniques. With a test time of less than 20 seconds for each cell and intercell connector, one person can easily, quickly, and precisely measure internal cell impedance, DC terminal voltage and intercell connection resistance without taking the battery system off line.

Everything you need to perform these tests is included with the BITE 2 instrument. There also is a full line of optional accessories to enhance the capabilities of the tester. Furthermore, the BITE 2 has the ability to download readings to a PC for data interpretation.

  • Measures impedance and DC voltage values for all lead-acid and nickel-cadmium cells up to 7000 Ah
  • Provides on-board Pass/Warning/Fail indications
  • Robust, repeatable instruments
  • On-line testing requires no downtime
  • Checks charger condition by measuring AC ripple current
  • Requires no battery discharge
  • Receiver can download stored data to PowerDB software for quick, easy analysis
  • Reduced test time: less than 3 seconds for each cell
  • Stores more than 2000 sets of readings in up to 300 tests


Determine maintenance needs, including:

  • Cell replacement criteria based on impedance trends
  • Jumpering out a cell or two
  • Clean and/or retorque intercell connectors
  • Shorten the maintenance interval

Test typical installations, including:

  • Electrical power generation plants
  • Substations: utility, railroad, industrial
  • Telecommunications facilities: CO, Wireline, Wireless, MTSO
  • UPS systems
  • Railroad: Signals and Communications, substation
  • Aircraft power supplies
  • Marine, military
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