BDM-2 Battery Drain & Voltage Meter

BDM-2 Battery Drain & DC Volt Meter supplies working voltage to a hearing aid while accurately displaying the amount of electronic current the hearing aid is drawing, commonly referred to as battery drain. BDM-2 also functions as a digital DC volt meter using the supplied voltage probe. BDM-2 connects to the hearing aid battery compartment through any industry standard battery pill, or probe / substitute (not included). Only the positive voltage probe is needed as the negative is supplied to the hearing aid through the battery pill. The negative terminal is also directly tied to earth ground for easy use with external test equipment which utilize a grounding electrical plug, such as an oscilloscope.

The BDM-1 battery drain meter also makes a great counseling tool for patients who complain hearing aid batteries don't last long enough. By reading the battery drain the user can confirm a problem, or calculate a realistic battery life.

Note: You will need a standard battery pill or battery sub connector to work with this unit.