HIOKI BT4560 Battery Impedance Meter – Low-Frequency AC-IR & Precise Voltage Measurement

Overview

The HIOKI BT4560 is a state-of-the-art battery impedance analyzer designed to accelerate and improve the quality control and research of batteries, especially those with very low internal impedance. It achieves accurate measurement without requiring charging or discharging of cells, by using low-frequency AC-IR measurement down to around 0.1 or 1 Hz. It is designed for both R&D labs and production lines for EV/ESS battery cells and modules. The BT4560 reduces inspection times drastically (to about 10 seconds in certain test conditions), while maintaining very high accuracy and stability.

Key Features

• Supports AC-IR measurement over a wide frequency range: from 0.1 Hz up to 1,050 Hz.

• Very high precision and resolution: impedance measurement resolution of 0.1 µΩ; DC / voltage measurement accuracy approx ±0.0035 % reading plus a few digits; voltage resolution down to 10 µV.

• Measurement current capability: up to ~1.5 Arms on the 3 mΩ range; lower currents on higher resistance ranges to maintain S/N ratio.

• Four-terminal pair measurement (source and sense leads), which reduces effects of cable/wire/contact resistance and improves stability and repeatability.

• Simultaneous measurement of impedance, voltage, and temperature.

• Fast evaluation: certain measurements can be completed in around 10 seconds when using low frequency (≈1 Hz or below) without pre-charging/discharging the battery.

• Interfaces and functions suitable for automation and data analysis: LAN, USB, RS-232C, EXT I/O; compatibility with equivalent circuit analysis software; ability to perform frequency sweep; software to generate Nyquist (Cole-Cole) plots.

Applications

• Evaluations in R&D labs to analyze battery internal behavior: charge transfer resistance, electrolyte resistance, diffusion resistance, etc.

• Quality control on production lines for Li-ion battery cells and modules, especially for low-impedance batteries used in EVs, HEVs, ESS.

• Aging / degradation analysis of battery cells, where internal impedance at low frequency is indicative of performance loss.

• Inline / automated inspection when many cells need frequent checking with high repeatability.

• Comparative diagnosis of battery cells: identifying defective ones by impedance/phase/frequency behavior.

Technical Specifications

Package Contents

• BT4560 main unit

• Power cable

• Instruction manual / user manual

• Zero-adjustment plate

• USB (type A-B) cable for PC connection

• Communication protocol manual, PC application software, USB driver

• Optional accessories / probes: clip-type probe, pin-type probe, temperature sensor, etc.

Call to Action

Trust in the precision and speed of the HIOKI BT4560 for your battery cell or module quality control and R&D work. Contact us today to get a quotation, discuss probe & accessory options, or request a trial/demo to see how it reduces your battery inspection cycle time while delivering reliable, repeatable data.

【FAQ】

1. Q: What is the lowest impedance the BT4560 can measure reliably?
   A: The lowest impedance range is 3.0000 mΩ, with resolution down to 0.1 µΩ.

2. Q: What frequency range does BT4560 support for impedance measurement?
   A: From 0.1 Hz up to 1,050 Hz, enabling both low-frequency diagnostics and high-frequency electrolyte or contact resistance measurements.

3. Q: How quickly can an impedance/voltage measurement be done?
   A: Certain measurements (e.g. at around 1 Hz or below) can be completed in approximately 10 seconds, without needing pre-charging or discharging the battery.

4. Q: What voltage range and accuracy does the BT4560 offer for voltage measurement?
   A: It uses a single fixed voltage measurement range of 5.00000 V with resolution around 10 µV and accuracy about ±0.0035 % of reading ±5 digits.

5. Q: What interfaces are available for integration / automation?
   A: It offers LAN, USB, RS-232C, and external I/O signals; supports frequency sweeps and data export; compatible with equivalent circuit analysis tools.