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How do you test a start assist capacitor? 

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The galvanostatic charge–discharge test confirms stable operation of the electrochemical capacitor using the present ionic plastic crystal.
Measurement capacitor value should be of comparable capacitance to reactors overall capacitance, a pulsed technology capacitor should be used for measurements.
Monitoring of capacitor characteristics during the accelerated life test shows that changes in these characteristic parameters cannot be used to predict failure.<<ETX>>
These tests assure that the capacitor is good before the ramp test and that it has been successfully ruptured following the test.
The EIS results also reveal an acceptable capacitor behavior after the 10,000-cycle CD test.
Since the device represents both a ferroelectric capacitor and a field effect transistor, specialized test procedures must be used to measure and understand all of the properties of a ferroelectric FET.
It is thus well suited as start-up test for drives.
This makes a low stress production test for end connection quality problematic since such tests can only show the total capacitor dissipation factor resulting from various factors.
In addition, the test achieves a 100% parametric fault coverage of the capacitor ratios defined by the SLB fault model for the Fleischer-Laker SC biquad.

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