Mallory TR-140 Mercury Hearing Aid Battery
The Mallory TR-140 mercury hearing aid battery was
manufactured by the Mallory Battery Co in the USA. It was used in
transistor body hearing aids in the mid 1950s.
The MalloryTR-140 mercury battery weighed 0.8 oz. (22 g), and measured
1 3/16" long
by 1" by ˝" (3.1 x 2.5 x 1.3 cm).
|
 |
Click picture for larger view |
| |
|
| |
|
|
Front view of the Mallory TR-140 mercury battery showing the model number (TR-140)
and voltage (1.25 volts).
|
 |
Click picture for larger view |
| |
|
|
Side view of the Mallory TR-140 mercury battery showing the
manufacturer, location and patent numbers.
|
 |
Click picture for larger view |
| |
|
|
Side view of the Mallory TR-140 mercury battery showing the positive polarity arrow
and the rectangular positive terminal.
|
 |
Click picture for larger view |
| |
|
|
Side view of the Mallory TR-140 mercury battery showing the negative polarity arrow
and round negative terminal. |
 |
Click picture for larger view |
| |
|
|
Top view of the Mallory TR-140 mercury battery showing the rectangular positive battery contact
(right) and the round negative battery terminal (left).
|
 |
Click picture for larger view |
| |
|
|
Bottom view of the Mallory TR-140 mercury battery.
|
 |
Click picture for larger view |
| |
|
(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
|
|
|
