BATTERIES 



hence 



It is only fair to mention that the makers produce cells of special design for 

 certain electronic applications, and these show a substantial saving in weight 

 and volume. 



Silver-zinc cell* 



The outstanding characteristic of these cells is their energy storage per 

 unit volume and weight, as the figures will show. Unfortunately the cost is 

 rather high. The cell voltage is 1-5 for the greater part of the discharge. 

 The electrolyte is potassium hydroxide. We take three examples from the 

 makers' catalogue. 



hence : 



In the accompanying illustrations an attempt has been made to collect and 

 display the significance of the figures in the foregoing tables. 



REFERENCES 



1 Hallows, R. W. Wireless World 59 (1953) 344 



2 — Wireless World 61 (1955) 503 



3 Jervis, M. W. J. sci. Instrum. 30 (1953) 60 



* Venner Accumulators Ltd., New Maiden, Surrey. 



290 



