Rayovac Model HT5 Hearing Aid Battery Tester
The Rayovac Model HT5 hearing aid battery tester was distributed by
the
Rayovac Corporation of Madison, WI around 1977.
It was designed to test zinc-air, mercury and silver button batteries
in common use at that time.
The Rayovac Model HT5 battery tester measured 4 7/16" x 2⅜" x 1 3/16"
(11.3 x 6.0 x 3.1 cm) and weighed 2.1 oz. (60 g).
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Front view of the Rayovac HT5 hearing aid battery tester.
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Close-up view of the Rayovac HT5 hearing aid battery tester meter. The
Model No. (HT5) is in the top right corner of the meter.
The meter was easy to read. If the needle remained in the red, the
battery needed to be replaced. If it was in the green, the battery was
still good.
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Bottom front view of the Rayovac HT5 hearing aid battery tester. To test
a battery you placed the positive terminal (bottom) of the battery on
the metal plate and touched the black probe to the top (negative)
terminal.
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Rear view of the Rayovac HT5 hearing aid battery tester showing the
distributor's name, the model number and instructions for use.
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Front view of the box the Rayovac HT5 hearing aid battery tester came
in.
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Rear view of the box view of the box the Rayovac HT5 hearing aid battery
tester came in giving basically the same information that was on the
back of the battery tester (above).
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