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Home / Battery Drain Meters / BDM-2 Battery Drain & Voltage Meter

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.

Item Number:
BDM-2 Battery Drain & Voltage Meter
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Item Options

Electrical Supply Voltage*
120V 60 Hz (standard North American)
220V 50 Hz ($10.00)

Add a Battery Sub Connector

Add 32A-S Battery Sub
32A-S Battery Sub Connector ($29.00)
BDM-2 Battery Drain & Voltage Meter

Dimensions: 4.5" x 3" x 1.75"

Weight: .8 lbs

Electrical Voltage / Current:
BDM-2-126/60: 120V AC 60Hz, 130ma
BDM-2-220/50: 220V AC 50 Hz, 65ma

Display: 3 digit, figure height 14.2mm, super bright LED, automatic zeroing, automatic polarity.

Operating Temperature: 0 to 50 degrees C

Accuracy: +/- .02 ma

Full scale range (ma): 9.99 ma

Over Range: Display = -1

Output Voltage: 1.30V DC +/- .01V

Conversion Rate: 2.5 per second

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