Solution to the exercises in Chapter

Autonomy in GSM mode over one hour, the average consumption is 

95 + 65 X 0.05 = 4.865 mAh. With a secondary battery whose capacity is 1200 mAh, the autonomy in this mode is therefore 1200/4.865 = 247 hours, which is a little over 10 days. 

Solution to exercise 2.2 Determination of the short-circuit current 

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