IEST Battery Cycle Tester Electrochemical Property Analyzer ERT Series
IEST Battery Cycle Tester Electrochemical Property Analyzer ERT Series-2
IEST Battery Cycle Tester Electrochemical Property Analyzer(ERT Series) - Image 3
IEST Battery Cycle Tester Electrochemical Property Analyzer(ERT Series) - Image 4

IEST Battery Cycle Tester Electrochemical Property Analyzer(ERT Series)

Introduction:Introduction: The IEST Battery Cycle Tester Electrochemical Property Analyzer (ERT Series) is a high-precision battery testing system and electrochemical property analysis platform engineered for comprehensive multi-variant characterization. Integrating native EIS analysis with an exhaustive electroanalytical testing suite—including DCIR, CV, dQ/dV, GITT, PITT, CA, and CP, designed with an ultra-precise 0.01% voltage and current measurement accuracy, it delivers unparalleled insights into multi-scale degradation and thermodynamic profiles. Designed with an ultra-precise 0.01% voltage and current measurement accuracy, this scalable system establishes absolute empirical benchmarks for long-term lifespan prediction, micro-reaction diagnostics, and advanced material validation.

Features:

  • Exceptional Precision & Control: Voltage and current measurement accuracy up to 0.01%, with current control down to the nanoampere (nA) level.
  • Broad Sample & Material Compatibility: Supports research and testing on various battery cells, capacitor materials, half-cells, three-electrode systems, coin cells, and low-capacity pouch/cylindrical cells.
  • Comprehensive Electrochemical Techniques: Supports EIS(ERT7008 available), multi-scan rate Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), GITT, PITT, Chronoamperometry (CA), and Chronopotentiometry (CP).
  • Robust Safety & Reliability: Triple-layer protection across software, hardware, and firmware to ensure equipment and specimen safety; features one-click test step resumption and multi-redundant data backup.
  • High-Precision Electrochemical Characterization: Generates benchmark data for calendar/cycle life prediction, ultra-high precision coulombic efficiency (HPC/CE), self-discharge analysis, and micro-parasitic side-reaction evaluation.
  • Flexible auxiliary channel integration: temperature control, surface temperature monitoring, three-electrode setups, and pressure detection.

Application:

  • dQ/dV Analysis
  • Accurate DCIR
  • Electrochemical Workstation
  • Accurate gram capacity
  • Accurate Coulombic Efficiency
  • Charge/Discharge Testing
  • Comparison of impedance of different cells
  • Cell Cycle Impedance Analysis
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Description

1. Battery Cyclers System ERT Series: Comparison

Model / Features ERT6008 ERT7008
Photo IEST Battery Cycle Tester Electrochemical Property Analyzer ERT Series-2 IEST Battery Cycle Tester Electrochemical Property Analyzer ERT Series-2
Name ERT6008: High Precision CV Test System ERT7008: High Precision CV+EIS Test System
Accuracy ±0.01% F.S. ±0.01% F.S.
Voltage ±5V ±5V
Current Range 1: 100mA
6: 12A		 1: 100mA
6: 12A
Electrochemical Function CV/LSV/PITT/GITT/CA/CP EIS/CV/LSV/PITT/GITT/CA/CP
EIS Testing × 0.01Hz~100kHz (Optional upgrade to 1 MHz)

2. R&D Background

2.1 Traditional Solutions

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) development background: addressing traditional testing bottlenecks of frequent manual cell transportation, repetitive wiring, human interference, and disconnected workflows between cyclers, incubators, and EIS electrochemical workstations.

Disadvantages: Repeated transfer, time-consuming and labor-intensive, with excessive human interference

2.2 Innovative Solutions of IEST Battery Cycle Tester

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) innovative integrated solution: all-in-one testing architecture enabling one-time wiring and one-click setup for in-situ EIS impedance spectroscopy, continuous EIS degradation tracking during cycling (discharge capacity vs. cycle number), and Cyclic Voltammetry (CV) analysis without manual sample transfer.

  • Advantages: One-time wiring, one-click setup, no manual transfer required
  • Saves Labor and Substantially Boosts Testing Efficiency
  • Exceptional Precision & Control: Voltage and current measurement accuracy up to 0.01%, with current control down to the nanoampere (nA) level.
  • Broad Sample & Material Compatibility: Supports research and testing on various battery cells, capacitor materials, half-cells, three-electrode systems, coin cells, and low-capacity pouch/cylindrical cells.
  • Comprehensive Electrochemical Techniques: Supports EIS(ERT7008 available), multi-scan rate Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), GITT, PITT, Chronoamperometry (CA), and Chronopotentiometry (CP).
  • Robust Safety & Reliability: Triple-layer protection across software, hardware, and firmware to ensure equipment and specimen safety; features one-click test step resumption and multi-redundant data backup.
  • High-Precision Electrochemical Characterization: Generates benchmark data for calendar/cycle life prediction, ultra-high precision coulombic efficiency (HPC/CE), self-discharge analysis, and micro-parasitic side-reaction evaluation.
  • Flexible auxiliary channel integration: temperature control, surface temperature monitoring, three-electrode setups, and pressure detection.

3. Application Scenario

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application scenarios and core capabilities: high-precision electrochemical workstation functions, EIS impedance analysis, accurate DCIR, dQ/dV differential capacity analysis, accurate gram capacity, high-precision coulombic efficiency, and charge-discharge cycling evaluation.

Applications

Case 1: EIS Analysis–Different Cell Impedance Analysis

High-frequency EIS impedance range: 0.01Hz~100kHz, meeting the high-frequency impedance test requirements of 10mΩ~1kΩ level batteries.

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: high-precision EIS impedance testing (0.01Hz–100kHz, 10mΩ–kΩ scale) comparing PEIS (coin cell) and GEIS (2Ah pouch cell) Nyquist plots against top-tier electrochemical workstations with <5% measurement deviation.

Compared with the EIS test results of well-known foreign electrochemical workstations, the error is within 5%

Case 2: Cell Cycle EIS Test

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: in-situ dynamic EIS impedance tracking (0.01Hz–100kHz) and charge-transfer resistance (Rct) evolution across charge and discharge states (10%–100% SOC and DOD) for coin cells.

  • Rct decreases as SOC increases.
  • Rct increases as DOD increases.

Case 3: Accurate DCIR Performance

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: high-precision Direct Current Internal Resistance (DCIR) measurement, current pulse method (V1-V0)/I, and measurement consistency comparison across different accuracy grades (0.05%, 0.02%, 0.01% with COV down to 4.0%) for coin cells at 25°C (0.5C, 10s).

  • DCIR testing was conducted on 6 sets of coin cells using instruments with three different voltage accuracy levels, with a 0.1 s sampling rate.
  • Higher voltage accuracy yields significantly better consistency in coin cell DCIR measurements.

Case 4: Cyclic Voltammetry(CV) to Evaluate Materials Properties

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: Cyclic Voltammetry (CV) material evaluation for 24mAh coin cells across scan rates (0.1, 0.2, 0.5 mV/s), linear fitting of peak current vs. square root of scan rate (ip vs. v^(1/2), R²=0.9947) for lithium-ion diffusion kinetics, and benchmark accuracy comparison against leading electrochemical workstations.

  • The peak current of reversible reduction is proportional to the square root of the scan rate.
  • Consistent with the CV(Cyclic Voltammetry) curves measured by electrochemical workstations.

Case 5: dQ/dV Curves to Evaluate Material Phase Changes

dQ/dV Curve Analysis:

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: differential capacity (dQ/dV vs. Voltage) analysis for battery material phase transition evaluation, demonstrating high-resolution peak identification and low signal noise with 0.01% measurement accuracy compared to standard 0.05% hardware.

Curve Smoothness:

  • High-precision equipment: dQ/dV curves are smooth and continuous, capable of capturing subtle electrochemical changes.
  • Low-precision equipment: Curves exhibit noise or discontinuities, with difficulty in accurately identifying detailed features.

Electrochemical reaction characteristics:

  • High-precision equipment: Clearly reveals characteristic peaks of multi-stage reactions in the battery, uncovering material phase transitions or side reactions.
  • Low-precision equipment: Characteristic peaks are obscured by measurement noise, prone to missing critical information.

In dQ/dV curve analysis, high-precision equipment is crucial for studying electrochemical details, improving data reliability, and identifying material characteristics. Low-precision equipment can perform basic testing but may miss critical details, especially in high-demand research scenarios.

Case 6: Charge and discharge Evaluation of Material Specific Capacity

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: evaluating active material specific gram capacity (charge/discharge mAh/g), initial coulombic efficiency (CE), and statistical repeatability (COV down to 1.0%) for graphite half-cells under multi-stage CC-CV protocols compared to benchmark testing systems.

Specific capacity testing across 8 graphite half-cells demonstrates superior capacity consistency.

Case 7: Evaluation of Coulombic Efficiency in Cells via Charge and Discharge Testing

Coulombic Efficiency Testing:

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: high-precision coulombic efficiency (HPCOR / CE%) evaluation across cycling, cumulative capacity fade modeling (CAPk = CAP0 * CE1 * ... * CEk), and measurement baseline stability comparing IEST high-precision channels (0.01%, 0.02%) against standard commercial systems (0.05%).

  • Lifetime prediction models built on coulombic efficiency can accurately forecast battery capacity fade.
  • For effective lifetime prediction, accuracy must be controlled to at least 1‰ (0.1%), with noise interference suppressed below 10 ppm!

Case 8: Evaluation of Cells Self-Discharge Under Constant Voltage Charging

  • High precision supports leakage current testing of large capacity and low internal resistance cells
  • Replace the time-consuming and labor-intensive solution of measuring K value, enabling faster and more accurate monitoring of battery cell self-discharge characteristics.

Coin Cell Leakage Current Test:

  • Electrodes: NCM (ф14 mm) vs. Lithium (ф20 mm)
  • Capacity: 2 mAh
  • Equipment: ECT6008 High-Precision Device
  • Test Procedure: Constant Current/Constant Voltage (CC/CV) Charging: 0.8 mA, 3.8 V, for 72 hours

IEST Battery Cycle Tester & Electrochemical Property Analyzer (ERT Series) application case: rapid battery self-discharge evaluation using constant voltage (potentiostatic) float charge method at 3.8V, measuring micro-current decay down to 2.76 µA steady-state leakage with first-order exponential decay fitting (ExpDec1, R²=0.9757).

IEST High-Precision Battery Cycler System enable current monitoring down to the nanoampere (nA) level, supporting ultra-low leakage current measurement.

Video

Specifications

Model Series ERT6008 (Cyclic Voltammetry Analyzer) ERT7008 (Electrochemical Impedance Analyzer)
Photo ERT6008 Cyclic Voltammetry Analyzer ERT7008 Electrochemical Impedance Analyzer
Type ERT6008-5V100mA ERT6008-5V6A ERT6008-5V12A ERT7008-5V100mA ERT7008-5V6A ERT7008-5V12A
Voltage ±5V ±5V, 1.5V, 0V
Current 10nA~0.1mA
0.1mA~1mA
1mA~10mA
10mA~100mA		 0.6μA~6mA
6mA~60mA
60mA~0.6A
0.6A~6A		 1.2μA~12mA
12mA~120mA
120mA~1.2A
1.2A~12A		 10nA~0.1mA
0.1mA~1mA
1mA~10mA
10mA~100mA		 0.6μA~6mA
6mA~60mA
60mA~0.6A
0.6A~6A		 1.2μA~12mA
12mA~120mA
120mA~1.2A
1.2A~12A
★EIS testing★ × 100 kHz – 0.01 Hz (Optional upgrade to 1 MHz)
★Electrochemical features★ Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), GITT / PITT / CA / CP Testing
Temp. Chamber Standard: 0 – 100°C (Customizable for other ranges) Standard: 0 – 100°C (Customizable for other ranges)
Channel 8
Maximum Sampling Rate 100 SPS
Output Four-Electrode Aviation Connector
(Supports three-electrode testing with auxiliary voltage integration)
Current & Voltage Control Accuracy ± 0.01% F.S.(Full Scale)
CP&CR Accuracy ± 0.02% F.S.(Full Scale)
Resolution 16bit
Input Power 30W 500W 30W 500W
Operating Modes Charge-Discharge Modes:
• Constant Current Charge/Discharge (CC)
• Constant Voltage Charge/Discharge (CV)
• Constant Current-Constant Voltage Charge/Discharge (CC-CV)
• Constant Power Charge/Discharge (CP)
• Constant Resistance Charge/Discharge (CR)
• DCIR (Direct Current Internal Resistance)
• Rate Charge/DischargeElectrochemical Modes:
• GITT (Galvanostatic Intermittent Titration Technique)
• PITT (Potentiostatic Intermittent Titration Technique)
• CA (Chronoamperometry)
• CP (Chronopotentiometry)

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IEST Battery Cycle Tester Electrochemical Property Analyzer

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