0.01% High-precision Battery Cycler

IEST Electrochemical Property Analyzer ERT Series

0.01% Current & Voltage Control Accuracy
EIS testing: 0.01 Hz -100 kHz.
8-Channel Testing
4 Testing Ranges Auto Switch
Three-electrode Setups
Supports electrochemical tests (multi-rate CV/LSV/GITT/PITT/CA/CP) with nano-ampere current control.

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Electrochemical Performance Analyzer ERT Series: Comparison


ERT6008 VS ERT7008

Name	ERT6008: High Precision CV Test System	ERT7008: High Precision CV+EIS Test System
Accuracy	±0.01% F.S.	± 0.01% F.S.
Voltage	0~5V	0~5V
Current Range	1：100mA 2：12A	1：100mA 2：12A
Electrochemical Function	CV/LSV/PITT/GITT/CA/CP	EIS/CV/LSV/PITT/GITT/CA/CP

Innovative Solutions of IEST

Provides accurate benchmark data for lifespan prediction, inventory efficiency, self-discharge, and micro-reaction testing, with voltage and current precision of 0.01%.

Supports a wide range of cell types, capacitor materials, half-cell, three-electrode, coin cell, and small-capacity testing.

Triple protection (software, hardware, firmware) ensures safe operation for both equipment and samples.

Supports EIS testing from 0.01 Hz to 100 kHz.current control.(ERT7008 available)

Supports electrochemical testing methods such as multi-scan rate cyclic voltammetry, linear sweep voltammetry, GITT, PITT, CA, and CP.

Flexible auxiliary channel integration for temperature control, surface temperature monitoring, three-electrode setups, and pressure detection.

Online calibration and independent operation of channels without interference.

Private cloud platform and cloud server backup ensure data security and confidentiality.

Application Scenario.

EIS Analysis

Accurate DCIR

Electrochemical Workstation

dQ/dV Analysis

Accurate Gram Capacity

Accurate Coulombic Efficiency

Charge and Discharge Testing

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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.

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

Case 2: Cell Cycle Impedance Test.

Coin cell Cycle EIS Test: 0.01Hz~100kHz, EIS test every 10% SOC

Rct decreases as SOC increases;
Rct increases as DOD increases

Case 3: Accurate DCIR Performance.

DCIR analysis of Coin Cell:

Three devices with different voltage accuracies were used to perform DCIR (Direct Current Internal Resistance) testing on five groups of coin cells, with data points collected every 0.1 seconds.
The results demonstrated that higher voltage accuracy yields better consistency in the DCIR of coin cells.

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

Evaluation of the electrochemical stability window of electrode materials:

The peak current of the reversible reduction is proportional to the square root of the scan rate.
It is consistent with the CV (Cyclic Voltammetry) curves obtained from the electrochemical workstation.

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

dQ/dV Curve Analysis:

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.

Curve Smoothness:

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-discharge Evaluation of Materials Gravimetric Capacity.

Battery Materials Gravimetric Capacity Testing:

Gravimetric capacity tests were conducted on eight graphite half-cells, demonstrating better consistency in specific capacity!

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

Coulombic Efficiency Testing:

A lifetime prediction model based on coulombic efficiency can forecast battery capacity degradation. For effective lifetime prediction, the accuracy must be maintained at least at 1‱, with noise interference kept 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 High-Precision Electrochemical Property Analyzer is capable of monitoring currents as low as the nanoampere (nA) level, supporting the measurement of minute leakage currents.

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	ERT6008(Cyclic Voltammetry Analyzer)		ERT7008（Electrochemical Impedance Analyzer）
Photo
Type	ERT6008-5V6A	ERT6008-5V12A	ERT7008-5V100mA	ERT7008-5V6A	ERT7008-5V12A
Voltage	5V						5V
Current	0.6μA~6mA 6mA~60mA 60mA~600mA 600mA~6A	1.2μA~12mA 12mA~120mA 120mA~1.2A 1.2A~12A	10nA~1mA 1mA~10mA 10mA~100mA	0.6μA~6mA 6mA~60mA 60mA ~600mA 600mA~6A	1.2μA~12mA 12mA~120mA 120mA~1.2 A 1.2A~12A
★EIS testing ★	×			EIS (Electrochemical Impedance Spectroscopy) testing： 0.01Hz~100kHz
★Electrochemical features ★	Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), GITT/PITT/CA/CP Testing						Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), GITT/PITT/CA/CP Testing
Temp. Chamber	-20~80℃					-20~80℃	-20~80℃	-20~80℃	-20~80℃
Channel	8						8
Output	Four-Electrode Aviation Connector (Supports three-electrode testing with auxiliary voltage integration)						Four-Electrode Aviation Connector (Supports three-electrode testing with auxiliary voltage integration)
V&I Accuracy	± 0.01% F.S.						± 0.01% F.S.
CP&CR Accuracy	± 0.02% F.S.						± 0.02% F.S.
Resolution	16bit						16bit
Input Power	500W/1000W			30W	500W/1000W		30W 500W/1000W
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/Discharge Electrochemical Modes: GITT (Galvanostatic Intermittent Titration Technique) PITT (Potentiostatic Intermittent Titration Technique) CA (Chronoamperometry) CP (Chronopotentiometry)

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0.01% High-precision Battery Cycler

IEST Electrochemical Property Analyzer ERT Series

Electrochemical Performance Analyzer ERT Series: Comparison

Innovative Solutions of IEST

Application Scenario.

EIS Analysis

Accurate DCIR

Electrochemical Workstation

dQ/dV Analysis

Accurate Gram Capacity

Accurate Coulombic Efficiency

Charge and Discharge Testing

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.

Case 2: Cell Cycle Impedance Test.

Coin cell Cycle EIS Test: 0.01Hz~100kHz, EIS test every 10% SOC

Case 3: Accurate DCIR Performance.

DCIR analysis of Coin Cell:

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

Evaluation of the electrochemical stability window of electrode materials:

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

dQ/dV Curve Analysis:

Curve Smoothness:

Curve Smoothness:

Case 6: Charge-discharge Evaluation of Materials Gravimetric Capacity.

Battery Materials Gravimetric Capacity Testing:

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

Coulombic Efficiency Testing:

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

Electrochemical Property Analyzer Brochure(ECT/ERT)

IEST Instruments Catalog

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