Test with a multimeter

Supercapacitor

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Now: Measure the voltage (red +)

5 V CircuVanta 6000 counts · auto range DCAUTO•)))HOLDFUSE− HOLD LIGHT OFFV⎓V~Ω•)))FmA⎓ mA400 mACOMVΩ Plus (+) 1 + Minus (−) 2 −
Pin 1: Plus (+) (+) Pin 2: Minus (−) (−)

Red probe Not connectedBlack probe Not connected

Hold the probe and drag it to the tip of a leg. Tapping works too: first pick the probe, then the leg.

Set the range to DC voltage.

Measure step by step

A supercapacitor is very large and arrives charged. First look at the voltage on the V⎓ range, then discharge it and watch it on the Ω range. The multimeter's F range cannot measure such a large value and shows OL; you cannot find capacitance loss with this tool.

If a charged supercapacitor is short-circuited, a very large current flows. Discharge it through a resistor.

  1. 1Measure the voltage (red +)
  2. 2Discharge it, watch it charge on the Ω range