Battery Informer Quadrant System

Battery Testing with the new BI Quadrant System (Option Code 19Q)

ISSUE DATE: ECN19503-5/12

The Battery Informer Quadrant System is a new option (option code 19Q) for the La Marche Battery Informer. It allows the customer to view the test results of the full battery string and four sections (quadrants) of the battery string. The Quadrant System is only compatible with a single battery string and will not work properly with paralleled battery strings.

In order to set up the Quadrant System, the customer will need to obtain three evenly spaced tap points within their battery string. Ex: A 60 cell battery would have taps placed at 15, 30, and 45 cells. The voltage between each tap defines a quadrant: the cells between the battery negative and Tap 1 are Quadrant 1, the cells between Tap 1 and Tap 2 are Quadrant 2, the cells between Tap 2 and Tap 3 are Quadrant 3 and the cells between Tap 3 and the battery positive are Quadrant 4. After connecting to the battery, the wires must be run to the provided terminal strip in the Battery Informer.

NOTE: La Marche Mfg. Co. does not provide the hardware/fuses necessary to connect to the battery at these taps (18 AWG is recommended).



The overall battery testing procedure does not change when using the new optional quadrant setup. The Battery Informer will still automatically test the battery every 14 days (or user defined time delay), or a customer can manually start a test. As with all La Marche Battery Informers, this option will never disrupt the operation of the DC system.

If the battery were to fail a test, an alarm will initiate and the voltage readings of each quadrant will be stored at the point of failure. By viewing the stored quadrant readings, the customer may then see which quadrant the failure occurred in. The voltage of the failed quadrant will likely be much different than the other three quadrants.

In addition, if no failure has occurred, the live quadrant voltages will be visible at all times. The customer may scroll through to view each quadrant individually. This feature enables the customer to see even small discrepancies in voltage between quadrants. An experienced technician can use this information to determine if the battery may need to be equalized or replaced.