BT4560-50 - Battery Impedance Meter, 0.01 Hz to 1050 Hz

Key SpecificationsMeasurement frequency: 0.01 Hz to 10 kHz DC voltage measurement range: 5 V Resistance ranges: 3 mΩ, 10 mΩ, 100 mΩ Maximum test current: 1.5 A rms (3 mΩ range) Interfaces: LAN, RS-232C, EXT. I/O Typical ApplicationsImpedance verification of lithium-ion and high-capacity battery cells in production and inspection Impedance-based cell matching and quality assessment for pack and module manufacturing High-frequency analysis of solid electrolyte interface (SEI) and separator behavior in R&D Automated impedance measurement using SW1001 / SW1002 multiplexing systems  Detailed Product OverviewThe HIOKI BT4560-60 Battery Impedance Meter is optimized for measuring the impedance of lithium-ion battery cells (LiB) and measures cell impedance from 0.01 Hz to 10 kHz with a DC voltage measurement range of ±5 V. The extended upper frequency limit enables impedance analysis of lithium-ion cells at higher frequencies. This allows the observation of effects related to the Solid Electrolyte Interface (SEI) and the separator, providing a broader view of electrochemical behavior. The instrument offers selectable ranges of 3 mΩ, 10 mΩ, and 100 mΩ, making it suitable for evaluating large-capacity cells with very low internal resistance such as those used in traction batteries and energy-storage applications. The maximum test current is 1.5 A rms in the 3 mΩ range and is correspondingly lower in higher ranges. The smallest impedance resolution is 0.1 µΩ. The four-terminal-pair measurement configuration minimizes errors caused by cable resistance, magnetic coupling, and eddy currents in the test setup. It is based on the principle of four-terminal measurement but additionally uses shielded pairs for the current and voltage paths, as commonly employed in LCR meters and impedance analyzers, to minimize coupling effects and phase errors at higher frequencies. The instrument can measure cell voltages of either polarity within the range of ±5 V, so the connection polarity of the cell under test does not affect measurement. Applications and Electrochemical Impedance Spectroscopy (EIS) The BT4560-60 is used for evaluating large-capacity battery cells in traction batteries and energy-storage systems. In production environments it supports impedance measurement and verification at the end of the cell assembly process. In pack and module manufacturing it is used for incoming inspection and cell qualification to ensure consistent performance before installation. In research and development it is used to study impedance characteristics, diffusion behavior, and degradation phenomena related to the state of health (SoH). The extended 10 kHz range enables additional high-frequency observation of interfacial processes and dielectric behavior within cell components. The instrument is also suitable for cell matching, where cells are grouped by impedance and capacity to achieve balanced performance within assembled packs. When connected to a PC, for example via USB, the BT4560-50 can be used for electrochemical impedance spectroscopy (EIS). The supplied software controls frequency sweeps, collects impedance data, and displays Nyquist and Bode plots for analysis. This setup is ideal for laboratory environments where impedance measurements are performed directly from a computer. Data can also be exported to ZView® for detailed equivalent-circuit evaluation. Perfect for System Integration With LAN and RS-232C interfaces and an EXT. I/O port for trigger and control signals, the BT4560-50 connects easily to automated measurement setups. It can interface with external controllers or multiplexing systems for sequence control, allowing flexible integration in production and quality-assurance environments. LabVIEW drivers and example programs are available for PC-based automation and custom control applications. The instrument can also be controlled directly by a PLC or used with the HIOKI SW1001 / SW1002 multiplexing systems and other suitable solutions, making it a practical choice for system integrators designing automated battery test setups. The BT4560-50 measures impedance using a low-level AC signal that does not affect the electrochemical state of the cell. This method allows precise impedance measurement without heat generation or degradation, even when testing high-capacity or newly developed cell types. Measurement cables for laboratory and production use are available separately. The L2002 Kelvin clip lead is designed for laminated battery cells such as pouch cells, while the L2003 Kelvin pin lead is suitable for cylindrical or mounted cells, including applications in automated test setups. Designed and manufactured in Japan, the BT4560-50 delivers the precision and stability required for reliable impedance testing of modern battery cells in research and production.

Test lead with special clips, gold-plated rounded contacts, 4-terminal pair AC-IR measurement from 0.1 Hz to 1050 Hz, suitable for test objects with contact tabs, BNC connectors

Test lead with pogo pins, gold-plated contact surfaces, 4-wire measurement, 4-terminal pair technique, AC-IR measurement 0.1 Hz to 1050 Hz, precise measurement on battery terminals, BNC connectors

The IM3590 Chemical Impedance Analyzer is designed for precise measurement of electrochemical components and materials, including batteries and electric double-layer capacitors (EDLCs).

The HIOKI Z2005 temperature sensor is designed for use with the HIOKI BT4560 and features a 1-meter cable for precise temperature measurements.

The Hioki 9772-90 is the replacement measurement tip for the Hioki 9772 test lead. Technical Detail: Coaxial pin, diameter: 1.8 mm Contact surface: gilded

The 9637 is a RS-232c cross type cable for two-way communication between PC or other controlling device and a Hioki Product equipped with RS232c interface as feature or option. Technical Details: Connectors: 9pin female (both ends) Cable Type: Cross Length: 1.8m

LAN cable, straight Ethernet cable, supplied with straight to cross conversion adapter, 5 m length, for the Memory HiCorder, LR8400 series, and similar products