SF9034 EQUIVALENT CIRCUIT FITTING APPLICATION

V1.0.0 Oct 02, 2026

The copyright to the executable program file and associated documents is owned by HIOKI E.E. CORPORATION. This utility may not be bundled with software or other publications which are sold for profit without the express written permission of the copyright owner.
Further, this product may not be modified without the express written permission of the copyright owner.

HIOKI disclaims any and all responsibility for any consequences arising out of use of this software.

Application software (Equivalent Circuit Fitting Application for Batteries_1.0.0.zip)

SF9034 is a free PC application that makes it easy to perform equivalent circuit fitting on battery EIS (electrochemical impedance spectroscopy) data measured with the BT4560-60 Battery Impedance Meter.Simply select a circuit model; no initial parameter values are required. With an appropriate model, a single run delivers a good fitting result, so you can start analyzing your EIS data right after measurement without any specialized setup.

Key Features

・Simple, single-screen operation: Register files, select a circuit model, preview data (Nyquist/Cole-Cole plots), and run the analysis, all from one screen. After the analysis, the display switches to the results screen automatically.
・Clear results display: The results screen shows a summary along with a Nyquist plot overlaying the measured data and the fitting result. The details screen lets you review statistical indicators, circuit parameters with confidence levels, and residual plots (absolute/relative).
・Support for major data formats: Reads CSV files in HIOKI IM/BT series formats and ZView format.
 

User Manual

The user manual is available from the [Quick Reference] button at the top right of the screen. 
Select [Battery Fitting] > [User Manual] to open it. 
The manual also includes a quick-start guide using the bundled sample data.

Operating Environment

Operating System: Windows 11 25H2 (64-bit)
 Processor: Intel® Core™ i5-10500 or equivalent
 Memory: 8 GB or more
 Storage: 256 MB or more
 Display: 1920×1080 (FHD) or higher