Megger / Biddle BITE 2P Battery Impedance Tester

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Megger / Biddle BITE 2P Battery Impedance Tester
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Megger Bite 2P
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Bite 2P Datasheet Specifications
The Biddle BITE 2P (246004) Battery Impedance Test Equipment 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, advanced printing functions and more. The case of the Megger BITE 2P consists of both the transmitter and a carrying case for all of the standard accessories and some of the optional accessories, in an all-in-one unit.


The instrument works by applying a test current across the battery string while on-line, then measuring the total current (ac ripple + test current) and the voltage drop of each cell/jar. It then calculates the impedance. It 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.
Megger Bite 2P Features
  • On-line testing requiring no downtime
  • Enhanced printing and memory functions
  • Calculates impedance automatically and stores results for on-site review
  • Requires no battery discharge
  • Receiver has an RS-232 connector for downloading stored data to a personal computer
  • Reduced test time: less than 30 seconds for each cell.
  • Measures impedance and DC voltage values for all lead-acid and nickel-cadmium cells up to 7000 Ah.
  • Stores more than 2000 sets of readings in up to 300 tests.
Megger Bite 2P Applications
A battery's internal impedance increases with decreasing capacity due to various conditions such as age, ambient temperature, discharge history, etc. The BITE 2P measure impedance values and DC voltage for lead-acid and nickel-cadmium cells up to 7000 Ah capacity. Impedance finds electrical path problems due to plate sulphation, post-seal corrosion, dry-out, and poor intracell and intercell connections. This information lets the operator determine maintenance needs such as:

Cell replacement criteria based on impedance trends

  • Jumpering out a cell or two
  • Clean and/or re-torque intercell connectors
  • Shorten the maintenance interval, etc.

Typical installations that can be tested using the AVO BITE 2P include:
  • 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
  • and many other applications