Ultracapacitor Tester

M3628ACF Automatic Capacitor Former

The M3628UMT ultracapacitor module tester is designed to determine the capacitance and ESR of modules up to 170V. A full test cycle delivers an adjustable constant current to charge the test capacitor to a desired voltage, holds the test voltage, then discharges at a constant current. It can also be operated solely as a voltage source or current source/sink.

RoHS Compliant


  • Charges, discharges, and measures ultracapacitor modules
  • Variable output voltage: 10-170V
  • Digital control interface
  • Operates from standard 90-260 VAC supply
  • Tough impact and weather resistant case


  • Accurate capacitance and Equivalent Series Resistance measurement
  • Over-current and over-temperature protection
  • Quickly charges and/or discharges ultracapacitor modules
  • Portable case on wheels


  • Measuring aging capacitors helps avoid unnecessary preemptive replacement
  • Quick verification of both new and stored ultracapacitors
  • Decreases maintenance time and cost
Model Number Input Voltage Input Frequency Max Output Voltage Max Output Current Test Capacitance
M3628UMT- U07-120 90-130 VAC 47-63Hz 170 V 7 A 2000 F
M3628UMT- U07-240 180-260 VAC 47-63Hz 170 V 7 A 2000 F
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