I have a very small solar cell that outputs 4 volts (open circuit) and 50 μA (short circuit). I'm trying to charge a 0.33 F capacitor that is rated for 5 volts. I'm looking to understand the charging relationship.(adsbygoogle = window.adsbygoogle || []).push({});

1. What equations govern the charging of this capacitor? I'm already aware of T = R x C; where T = time in seconds; R = resistance in ohms; and C = the capacitance (in Farads).

2. Assuming I want to use the charged capacitor to power a small circuit, how can I convert the stored charge to something like mAh?

3. If I do not use a resistor between the solar cell and the capacitor, using the equation T = R x C, wouldn't the time to a full (4 volt) charge equal zero seconds?

Thanks! [Edited to correct the capacitor value.]

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# Solar cell charging a super capacitor - need an equation

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