Friday, 29 January 2016

capacitor - How to calculate equivalent capacitance to a battery?


I have a 1.25V 2Ah battery and I'm trying to calculate a equivalent capacitance with rated voltage of 2.7V for each of those batteries. This is what I did:


Work of Battery = \$1.25V \cdot 2A \cdot 3600s = 9000J\$


From the capacitor work equation:


$$W = 0.5 \cdot C \cdot V^2$$


$$9000J = 0.5 \cdot C \cdot 2.7V^2$$


$$C=2469.1358F$$


Is this correct?




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