Kai When you connect the capactor to the rest of the circuit leakage from the total bank through the rest of the curcuit will cause the capacitor with the lowest internal leakage see an increase in voltage . if the imballance is large enough this may put one cap over voltage. given the wide range of tolerances in capacitors this may well be serious.

Mahmood sorry i meant that if you put voltmeters across all caps at the same time they will not upset the static condition so you will see the correct trend. I feel that for production run purposes further refinement would be needed for reliability but for a one off design intended for short life you can probably get this to work by match and select methodes.

Electrolytic capacitors have quite unstable characteristics when first powered and suffer significant drift with time and temperature. this is why we generaly use such large values when we use them 10 to 100 times what we really need if they were 1% long term stable components Terry