National Union Radio Corporation Batteries
February 1946 Radio News

February 1946 Radio News

[Table of Contents] Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

Many of the types and packaging styles of batteries of yesterday are nothing like those of today. Back then, a lot of battery packages had square corners, whereas nowadays they tend to be round. The individual cells inside the "square" batteries were usually round, however, because rather than using heat shrinkable tubing to hold the entire parallel and/or series groupings together, they were inserted into rectangular cardboard boxes. Being free to shift around in the box made inter-cell connections vulnerable to vibration and shock, so failure rates were higher than experienced now in tightly restrained cells in shrink tubing. Inter-cell connection failure was a big problem with model airplanes when batteries contained in boxes were subject to sometimes violent vibration coming from rough-running engines - often augmented by a poorly balanced propeller. To make matters worse, in the very early days of model aviation, "wet" cells of the lead-acid types were used to provide high power needed for vacuum tube receivers. In a crash or hard landing (often indistinguishable from one another), the battery cases would break allowing acid to get on electronics and wood.

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National Union Radio Corporation, Newark 2, New Jersey

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Posted August 10, 2022