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Home / Battery Drain Meters / BDM-1 Battery Drain Meter

BDM-1 Battery Drain Meter

BDM-1 battery drain meter supplies working voltage to the hearing aid while accurately displaying the amount of electronic current the hearing aid is drawing, commonly referred to as battery drain. BDM-1 connects to the hearing aid battery compartment through any industry standard battery pill, or probe / substitute (not included). The negative terminal supplied to the hearing aid is 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-1 Battery Drain 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-1 Battery Drain Meter

Dimensions: 4.5" x 3" x 1.75"

Weight: .8 lbs

Electrical Voltage / Current:
BDM-1-126/60: 120V AC 60Hz, 130ma
BDM-1-220/50: 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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