Abstract
The storage batteries as they are produced at present, have developed to such a state that they can now be used for almost all kinds of works-for farm purposes, for truck and pleasure cars, for submarine boats. for communications and even for aero-craft.
The field of application of the storage batteries having been extended to such a point, there ought to be introduced some more standarigations to be added in determining its adaptability to a particular purpose for which it is intended.
Formerly the auther, at this Electrotechnical Laboratory, adopted a new standarigation which should be called the weight efficiency:- the weight efficiency at a particular hour rate is the ratio of Kilo-grams weight including electrolyte to Kilowatt hours output at that particular discharge rate. In this paper the anther treats the same problem and explains from what point of view he has adopted the new strandarigation. And he further discusses how he arrived at the conclusion, showing vaious data of his experiments.
A number of the weight efficiency- Capacity curve for batteries for electric vehicle and the stationary purposes are given in Fig. 1. and Fig. 2. From these curves the auther has adopted the weight efficiency standarigation as follows:-
*50(Kg./K.W.H)……for portable batteries, mainly for electric cars.
*100(Kg./K.W.H)……for stationary batteries.
*Remark:- The weight efficiency, in its original sense of the definition, should be expressed in Kg. per K. W. H., but may simply be expressed by its numeric value.
