I know the capacitor value, discharge time, and the top and bottom voltage. I don't think I know my load resistor because it is a bit complicated to measure.

Is there a way to measure the total discharged current?

I know the capacitance C (1000uF) then the slope of the curve is proportional to the discharge current.

i(t) = C dvdt

However, I want to know the total current discharged by the capacitor or the entire power (Calculation)? How to do it?