Nickel-cadmium battery discharge, temperature effect

The effect of temperature and discharge rate on the capacity of a sealed nickel-cadmium battery is shown in Fig. 28.12. These data are typical of standard batteries. Manufacturers should be contacted to obtain performance characteristics of specific batteries. 

Table 4.3 Effect of bigb and low temperatures on storage, discharging and cbarging(fEveready nickel-cadmium cells and batteries...

Figure 31.20 illustrates the effect of battery temperature on capacity returned (discharged capacity) for 1.2V, 20 xAh and lAh capacity nickel-cadmium button cells. In both cases capacities start decreasing below 10°C and above 38°C. Similar plots comparing the performance of sealed nickel-cadmium button and cylindrical cells are shown in Figure 31.21. Figure 31.22 shows a typical plot of percentage withdrawable capacity versus temperature for a sealed nickel-cadmium sintered button cell. 

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