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A battery 745

Country:  United States of America (USA)
Manufacturer / Brand:  Eveready (Ever Ready), AENMC / National Carbon Company (NCC); Columbia
Year: 1938 ?? Category: Power supply/conditioner or battery or charger 
Wave bands - without
Power type and voltage Is a battery or storage battery / 1.5 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: A battery 745 - Eveready Ever Ready, AENMC /
Dimensions (WHD) 270 x 96 x 34 mm / 10.6 x 3.8 x 1.3 inch

Contains 8 x F cells in parallel in one row. About 68,000 to 80,000 mAH depending on load, or over 250 hours on a 300mA 5 tube Battery Radio, perhaps close to 300 hours on a 250mA  4 tube set, certainly over 240 hours on a 250mA set. Life depends on prior storage quality of cells, operating temperature and load (internal resistance means duration isn't linear with load).

Connector on one of the small sides is common type 1.5V. (small and fat pins at smaller spacing).

The first USA "All Dry" Radios used Sylvania octal tubes in 1938.

Model page created by Michael Watterson. See "Data change" for further contributors.

All listed radios etc. from Eveready (Ever Ready), AENMC / National Carbon Company (NCC); Columbia
Here you find 149 models, 125 with images and 20 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.