![1950s, historical, large industrial batteries of the era stacked together in a genarator room, possibly as a back-up power source for wirless receivers at a small airport Stock Photo - Alamy 1950s, historical, large industrial batteries of the era stacked together in a genarator room, possibly as a back-up power source for wirless receivers at a small airport Stock Photo - Alamy](https://c8.alamy.com/comp/2DF5K3N/1950s-historical-large-industrial-batteries-of-the-era-stacked-together-in-a-genarator-room-possibly-as-a-back-up-power-source-for-wirless-receivers-at-a-small-airport-2DF5K3N.jpg)
1950s, historical, large industrial batteries of the era stacked together in a genarator room, possibly as a back-up power source for wirless receivers at a small airport Stock Photo - Alamy
Looking for info on 1940s-1950s car batteries - General Discussion - Antique Automobile Club of America - Discussion Forums
![File:Vintage Eveready Transistor Radio Batteries, No. 1015, 1.5 Volts (9738608864).jpg - Wikimedia Commons File:Vintage Eveready Transistor Radio Batteries, No. 1015, 1.5 Volts (9738608864).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/b/bd/Vintage_Eveready_Transistor_Radio_Batteries%2C_No._1015%2C_1.5_Volts_%289738608864%29.jpg)
File:Vintage Eveready Transistor Radio Batteries, No. 1015, 1.5 Volts (9738608864).jpg - Wikimedia Commons
![1950s, historical, picture shows a large number of heavy duty industrial batteries fixed onto wooden platforms or racks, England, UK Stock Photo - Alamy 1950s, historical, picture shows a large number of heavy duty industrial batteries fixed onto wooden platforms or racks, England, UK Stock Photo - Alamy](https://c8.alamy.com/comp/KAWF7P/1950s-historical-picture-shows-a-large-number-of-heavy-duty-industrial-KAWF7P.jpg)
1950s, historical, picture shows a large number of heavy duty industrial batteries fixed onto wooden platforms or racks, England, UK Stock Photo - Alamy
![File:Vintage Zerad (Zenith Radio Corporation) Hearing Aid Battery Tester, Used To Test The Voltages Of Both "A" And "B" Batteries of One-Piece Hearing Aids, Circa Late 1940s-Early 1950s (14435333839).jpg - Wikimedia Commons File:Vintage Zerad (Zenith Radio Corporation) Hearing Aid Battery Tester, Used To Test The Voltages Of Both "A" And "B" Batteries of One-Piece Hearing Aids, Circa Late 1940s-Early 1950s (14435333839).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/4/43/Vintage_Zerad_%28Zenith_Radio_Corporation%29_Hearing_Aid_Battery_Tester%2C_Used_To_Test_The_Voltages_Of_Both_%22A%22_And_%22B%22_Batteries_of_One-Piece_Hearing_Aids%2C_Circa_Late_1940s-Early_1950s_%2814435333839%29.jpg)