Ever Ready batteries

Fig. 3.1 Leclanche cells, past and present (a) Leclanche wet cell (b) D-si/.e dry cell (Ever Ready) (c) paper battery, (Matsushita Battery Industrial Co.)...

Although Union Carbide and Mallory are two of the major producers of mercury-zinc cells and batteries, there are, of course, other important producers such as Ever Ready (Berec) (UK), Crompton-Parkinson (Hawker Siddeley) (UK) and Varta (West Germany). Table 8.1 gives the type numbers of equivalent cells that meet a given International Electrochemical Commission (lEC) designation as produced by Union Carbide. Mallory, Ever Ready (Berec) and Varta. In many instances equivalent cells are available fix>m more than one manufacturer. In such instances comparative cost quotations would be of interest to the intending purchaser. 

Union Carbide market their products under the trade name Ever Ready, manufacturing a range of sealed cylindrical and button-type nickel-cadmium batteries in the range 1.2-14.4 V. 

The Ever Ready range of carbon-zinc dry cells and batteries covering 1.5-YOV supplied is given in Table 54.7. 

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