# IEST Instrument (Initial Energy Science & Technology Co., Ltd.) > Pioneering technical service provider in advanced energy storage testing devices. IEST delivers high-precision, industry-leading testing solutions for single particle, battery materials, electrodes, cells, in-situ swelling/gassing monitoring, solid-state battery fabrication, automatic coin cell assembly machine and automated laboratory. ## Quick Facts - Founded: 2018 - Headquarters: Xiamen, Fujian Province, China - Employees: 300+, with R&D roles accounting for over 65% of total headcount - Track record: 6,000+ instruments delivered to 1,300+ clients globally - Market focus: This site (iestbattery.com) serves international B2B customers — battery R&D labs, power battery manufacturers, universities, material manufacturers, and QC departments outside mainland China - Chinese-market site: iesttech.com (separate site and sales channel for mainland China customers) ## Automatic Coin Cell Assembly Machine - [Automated Coin Cell Assembly Machine (CAAS)](https://iestbattery.com/product/iest-automatic-coin-cell-assembly-system/): High-Throughput industrial-grade automated coin cell assembly machine featuring robotic arms, AI vision inspection, and ±0.2mm assembly concentricity. - [Lab-Scale Auto Coin Cell Assembly Machine (CAAS1000)](https://iestbattery.com/product/lab-scale-auto-coin-cell-assembly-machine/): Compact automatic coin cell assembly machine engineered for space-constrained university labs and budget-friendly R&D workflows. ## Material Characterization Systems - [Powder Resistivity & Compaction Density System (PRCD3100)](https://iestbattery.com/product/iest-powder-resistivity-compaction-density/): The PRCD3100 is a powder characterization platform engineered for the simultaneous, high-precision evaluation of powder resistivity and compaction density. - [Single Particle Force Properties Test System (SPFT2000)](https://iestbattery.com/product/iest-single-particle-force-properties-test/): Evaluates mechanical strength, force curves, and compressive fracture properties of individual battery active particles. - [Single Particle Electrochemical Performance System (SPEC Series)](https://iestbattery.com/product/single-particle-electrochemical-tester/): Analyzes charge/discharge behavior and electrochemical properties at the single-particle level. - [Lithium Battery Slurry Resistivity Tester (BSR2300)](https://iestbattery.com/product/battery-slurry-resistance-analyzer/): Monitors slurry dispersion quality, conductivity, and stability for battery manufacturing process control. - [Solid Electrolyte Test System (SEMS3200)](https://iestbattery.com/product/iest-solid-electrolyte-test-system/): Multi-dimensional characterization system for ionic conductivity and mechanical-electrochemical performance of solid-state electrolytes. ## Electrode Characterization Systems - [Battery Electrode Sheet Resistance Tester (BER2500)](https://iestbattery.com/product/battery-electrode-resistance-tester/): Measures internal electronic resistance and contact resistance between current collector and active coating layer. - [Battery Electrode Flexibility Testing System (BEF1000)](https://iestbattery.com/product/battery-electrode-flexibility-test-system/): Characterizes bending resistance, coating adhesion, and mechanical flexibility of battery electrode sheets. - [Electrode Tortuosity & Separator Ion Conductivity Tester (EIC Series)](https://iestbattery.com/product/iest-electrode-tortuosity-tester/): Measures tortuosity factor of porous electrodes and ion conductivity of battery separators. - [Electrode Electrolyte Wetting Testing System (EWS/ETS/CHT Series)](https://iestbattery.com/product/electrolyte-wetting-measurement-system/): Evaluates contact angle, electrolyte absorption, and wetting dynamics on electrode surfaces. - [Automated Electrode Powder Sampling System (LEPS Series)](https://iestbattery.com/product/automated-electrode-powder-sampling-system/): Automated sample preparation system based on micrometer-level layer-by-layer scraping technology. It is designed to precisely peel off battery electrode coatings at different depths and regions to obtain highly accurate, structured samples. ## In-Situ Battery Swelling & Pressure Monitoring - [In-Situ Cell Swelling Testing System (SWE Series)](https://iestbattery.com/product/iest-in-situ-cell-swelling-testing-system/): Real-time non-destructive measurement of thickness expansion and swelling force evolution during pouch and prismatic cell charge/discharge cycling. - [Battery Pressure Mapping Sensor Measurement System (BPD Series)](https://iestbattery.com/product/battery-pressure-distribution-sensor-test/): Real-time interface pressure mapping and temperature monitoring for battery cell and module-stack compression analysis. - [Cylindrical Battery In-Situ Volume Swelling System (CCS1100)](https://iestbattery.com/product/cylindrical-battery-swelling-testing/): Monitors volumetric swelling and dimensional expansion of cylindrical cells during charge/discharge. - [Silicon-Based Anode Swelling Rapid Screening System (RSS1400)](https://iestbattery.com/product/silicon-based-anode-swelling-screening/): High-throughput rapid screening platform designed to quantify swelling behavior of silicon-based anode chemistries. - [In-Situ Model Coin Cell Swelling Testing System (MCS1000)](https://iestbattery.com/product/model-coin-cell-swelling-testing-system/): Precision swelling characterization system tailored for model coin cells. ## In-Situ Battery Gassing Analyzers - [In-Situ Battery Gassing Volume Analyzer (GVM2200)](https://iestbattery.com/product/in-situ-battery-gassing-volume-analyzer/): In-situ quantification of gas volume changes and gas generation kinetics during battery cycling. - [In-situ Multi-channel Battery Storage Gassing System (MSG2000)](https://iestbattery.com/product/in-situ-battery-storage-gassing-system/): Multi-channel gas evolution tracking during battery storage and high-temperature aging tests. ## Electrochemical & Impedance Testers - [Battery Impedance Tester (BIT Series)](https://iestbattery.com/product/battery-consistency-battery-impedance-test/): Rapid AC impedance and battery consistency testing system for cell screening and quality control. - [Battery Cycler Electrochemical Analyzer (ECT Series)](https://iestbattery.com/product/battery-cycler-electrochemical-analyzer/): High-precision battery charge/discharge cycler and electrochemical performance analyzer. - [Battery Cycle Tester Electrochemical Analyzer (ERT Series)](https://iestbattery.com/product/battery-cycle-tester-electrochemical-tester/): Advanced battery cycling test station engineered for long-term cycle life, rate performance, and degradation analysis. ## Application Cases Real-world testing scenarios and case studies, organized under the site's Applications navigation menu, demonstrating how IEST equipment is used in battery R&D and QC workflows. ### Material Characterization Case (sub-category) - [Powder Resistivity & Compaction Density Case](https://iestbattery.com/powder-resistivity-compaction-density-measurement-system/): Applied case study on evaluating powder resistivity and compaction density in battery materials development. - [Battery Slurry Resistivity Case](https://iestbattery.com/battery-slurry-resistivity-analyzer/): Applied case study on slurry dispersion quality and conductivity monitoring in electrode manufacturing. - [Solid Electrolyte Test Case](https://iestbattery.com/solid-electrolyte-test-system/): Applied case study on ionic conductivity and mechanical-electrochemical characterization of solid-state electrolytes. - [Single Particle Mechanics Case](https://iestbattery.com/single-particle-mechanics-case/): Applied case study on mechanical strength and fracture behavior of active material single-particles. ### Electrode Characterization Case - [Electrode Characterization Case](https://iestbattery.com/electrode-characterization-case/): Applied case study on electrode sheet resistance, flexibility, and tortuosity evaluation. ### In-situ Battery Swelling Case (sub-category) - [In-situ Cells Swelling Case](https://iestbattery.com/in-situ-cell-swelling-case/): Applied case study on real-time thickness expansion and swelling force monitoring in pouch/prismatic cells. - [In-situ Silicon-based Anode Swelling Case](https://iestbattery.com/in-situ-silicon-based-anode-swelling-case/): Applied case study on swelling behavior screening for silicon-based anode materials. - [In-situ Cylindrical Cells Swelling Case](https://iestbattery.com/in-situ-cylindrical-cells-swelling-case/): Applied case study on volumetric swelling monitoring in cylindrical cell formats. - [In-situ Model Coin-Cell Swelling Case](https://iestbattery.com/in-situ-model-coin-cell-swelling-case/): Applied case study on swelling characterization using model coin cells. ### In-situ Battery Gassing Case - [In-Situ Battery Cell Gassing Case](https://iestbattery.com/in-situ-cell-gassing-volume-monitor-analyzer/): Applied case study on gas volume monitoring and gas generation kinetics during cycling and storage. ### Electrochemical Properties Case - [Electrochemical Performance Analysis](https://iestbattery.com/electrochemical-performance-analysis/): Applied case study on charge/discharge behavior and electrochemical performance analysis. ### Coin Cell Auto Assembly Case - [Coin Cell Automatic Assembly System Case](https://iestbattery.com/coin-cell-automatic-assembly-system-case/): Applied case study on automated coin cell assembly workflows for lab and industrial use. ## Technical Resources & Application Cases - [Article Resource Center](https://iestbattery.com/article-resource-center/): 261+ technical articles covering battery material testing methodology, electrode characterization case studies, in-situ swelling/gassing failure analysis, and solid-state battery R&D protocols. - [Solid-State Battery Testing Solutions](https://iestbattery.com/solid-state-battery-testing-solutions/): Customized test protocols and equipment setups for all-solid-state battery R&D. ### Academic Application - [Academic Application Cases](https://iestbattery.com/academic-application/): Peer-reviewed academic research and industrial testing applications using IEST instruments. ## News - [Company News](https://iestbattery.com/company-news/): Latest updates on IEST Instrument, including product launches, exhibitions, partnerships, and corporate milestones. - [Industry News](https://iestbattery.com/industry-news/): Curated news and developments in the lithium battery industry, covering materials, manufacturing, and market trends. ## Corporate & Contact - [About IEST](https://iestbattery.com/page/about-us/): Corporate profile, R&D strength, and global delivery footprint. - [Contact Us](https://iestbattery.com/page/contact/): Get in touch with our technical sales team for inquiries, quotes, and custom configurations.