Princeton Applied Research-VersaSTAT (Model: 4 )

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The VersaSTAT 4 builds upon the already impressive new design of the VersaSTAT 3 giving you even more improved speed, versatility, and precision required for a range of electrochemical applications.

The increased maximum current of 1A standard as well as optional current boosters up to 20A, positions the VersaSTAT 4 to take you from the early stages of battery and fuel cell development to the charge/discharge experiments on the final product and the challenges that lie ahead for the next generation of batteries.

The improved low current performance with fA resolution and pA accuracy addresses current sensitive applications such as sensors, corrosion, inhibitors, and combined with the optional FRA, coating technologies.  The additional analog filtering makes the VersaSTAT 4 an even better choice for corrosion applications while the additional bandwidth filtering adds extra stability for capacitive cells.  The VersaSTAT 4, with its additional capabilities, makes an exciting addition to our VersaSTAT family making them even more of an exceptional value for all of your application needs.

  • Improved low current performance with fA resolution and pA accuracy
  • Maximum current up to 1A with additional bosster options ranging from 2A-20A
  • 2µs time base for faster data acquisition and faster scan rates
  • Additional analog filter selections on current and voltage channels for superior signal/noise measurements
  • An internal frequency response analyzer option that provides impedance analysis over the frequency range 10µHz to MHz
  • Easy-to-use VersaStudio software included


Data Acquisition

Data Acquisition

3 x 16 bit 500k samples per second ADCs synchronized voltage/current/auxiliary

Time Base Resolution (min)

2µs (500k samples/second)

Automatic Noise Filters


Power Amplifier

Voltage Compliance


Current Compliance

±1A (standard)

±2A (with 2A option)

Potentiostat Bandwidth

1 MHz

Stability Settings

six settings; high stability, 1Mhz-100Hz

Slew Rate

>8V per µs typical (no load)

Rise Time (-1.0V to +1.0V)

<350 ns (no load)

Voltage Control (potentiostat mode)

Applied Voltage Range


Applied Voltage Resolution

for ±10mV signal = 300nV

for ±100mV signal = 3µV

for ±1V signal = 30µV

for ±10V signal = 300µV

Applied Voltage Accuracy

±0.2% of value ±2mV

Maximum Scan Rate

5000 Vs-1 (10 mV step)

Maximum Scan Range

±10V / 300µV

Current Control (galvanostat mode)

Applied Current Range

±full scale (depends on range selected)

±1A (standard), ±2A (with option)

Applied Current Resolution

±1/32,000 x full scale

Applied Current Accuracy

±0.2% of reading, ±0.2% of range


Max. Current Range/Resolution

±1A / 60µA

Min. Current Range/Resolution

±4nA / 120 fA


Max. Input Range



≥10MHz (3dB)

Input Impedance

≥1012 Ω in parallel with ≤5pF (typical)

Leakage Current

≤5pA at less than 25°C


60 dB at 100kHz (typical)

Voltage Measurement

Voltage Range


Minimum Resolution


Voltage Accuracy

±0.2% of reading, ±2mV

Current Measurement

Current Ranges

Auto-ranging (10 ranges)

1A to 4nA (8 ranges)

2A to 4nA (with option)

Current Resolution

120 fA (4nA range)

Current Accuracy (DC)

20nA to 2A: ±0.2% of reading, ±0.2% of range

4nA: <0.5% ±20pA


1MHz (signal ≥2mA range typical)

Bandwidth limit filter

Yes, five total

Impedance (EIS) Option



Frequency Ranges

10µHz to 1MHz

Minimum AC Voltage Amplitude

0.1mV RMS


Linear or Logarithmic

iR Compensation

Positive Feedback


Dynamic iR


Interfaces (included as Standard)

Digital inputs/outputs

5 TTL logic outputs, 2 TTL logic inputs

Auxiliary Voltage Input

Measurement synchronized to V and I

±10V range, input impedance 10kΩ

Filter: off, 1kHz, 200kHz

BNC connector

DAC Voltage Output (Standard)

±10V range, output impedance 1kΩ

BNC connector (for stirrers, rotating disk

electrode etc.)

PC / Software

Communications Interface

Universal Serial Bus (USB)

Operating System

Windows 7 (64-bit & 32-bit)

Windows XP / Vista

PC Specification (minimum)

Pentium 4 (1GHz) / 1GB memory

High Data rates may require additional






250VA Max.

Voltage range 90Vac to 250Vac, 50-60Hz


16¼” x 15¼” x 3½”   421 x 387 x 89mm


10lbs, 4.5kgs

Operating Temperature Range

10°C to 50°C


Maximum 80% non-condensing

Temperature (specified)


Dummy Cell

Internal (DC only)

CE Approved


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