HIOKI BT3561A Battery HiTester – Internal Resistance & OCV Measurement

Overview

The HIOKI BT3561A Battery HiTester is a high-performance test instrument engineered for precise and rapid measurement of internal resistance (AC-IR) and open-circuit voltage (OCV) of small battery cells and battery packs under 60 V. Developed for demanding production-line environments, it offers improved immunity to static, robust input path impedance handling, and enhanced system integration capabilities via standard LAN and optional interfaces. Whether you’re verifying cell quality, sorting battery modules, or conducting acceptance testing, the BT3561A delivers trustworthy results with speed and reliability.

Key Features

• Dual measurement of internal resistance (AC-IR) & open-circuit voltage (OCV) in one instrument

• Multiple resistance ranges: 30 mΩ / 300 mΩ / 3 Ω / 30 Ω / 300 Ω / 3 kΩ – covers a wide span from very low internal resistance (welds / tabs) to higher resistances in degraded cells or connectors

• Voltage measurement ranges: 6 V and 60 V – suitable for cells and small battery packs up to 60 V

• High accuracy: ±0.5% reading ±5 digits for resistance (30 mΩ and above); ±0.01% reading ±3 digits for voltage measurement

• Fast response / sampling modes: Multiple speed settings (EX.FAST, FAST, MEDIUM, SLOW) for balancing between speed and stability. Typical response times ~10 ms.

• Robust design for production environments:

  • Enhanced path impedance tolerance (cable + relay + contact resistance) – allowing longer leads and relay switching without compromising measurement integrity.

  • Electrostatic discharge (ESD) protection: withstands ±30 kV contact discharge per IEC 61000-4-2 standard.

• Interfaces and connectivity: Standard LAN (TCP/IP, 10BASE-T / 100BASE-TX), RS-232C, EXT I/O, analog output options. Easily integrates with PLCs and automated inspection systems.

• Power supply & portability: AC 100-240 V input, approx 35 VA consumption. Compact and rugged for industrial use.

Applications

The BT3561A is highly suited for:

• Battery cell manufacturing quality control – for lithium-ion cells, nickel-metal hydride, etc.

• Incoming/outgoing inspection of cell sheets/modules before assembly into battery packs.

• Battery pack assembly of small to medium packs (below 60 V) — power tools, e-bikes, portable storage.

• Research & development labs testing cell performance, internal resistance, voltage under controlled conditions.

• Automated production line deployment, sorting, binning of battery units based on impedance/voltage thresholds.

Technical Specifications

Package Contents

When you order the BT3561A, typically included:

• HIOKI BT3561A Battery HiTester main unit

• Power cord compatible with local region

• Instruction manual / Operating precautions document

• (Optional / Accessories) Test leads (clip, pin, 4-terminal leads) for 60 V or lower; optional leads for higher voltages if required

• Interface / communication cables if selected (e.g. RS-232C, LAN)

• Zero-adjustment board (as needed with long leads)

Call to Action

If you’re looking to enhance your battery testing capability with a reliable, high precision internal resistance & voltage tester, the HIOKI BT3561A is your solution. Contact us today for pricing, demo setup, or to discuss integration in your production line. Ensure consistent battery performance; minimize quality failures with fast, accurate, and automated testing.

【FAQ】

1. Q: What is the maximum voltage the BT3561A can measure?
   A: The BT3561A supports open-circuit voltage (OCV) measurement up to 60 V.

2. Q: How low can the internal resistance measurement go?
   A: The lowest resistance range is 30 mΩ (milliohms), with resolution down to microohms in that range.

3. Q: What interfaces are available for automation with PLCs or factory systems?
   A: Standard interfaces include LAN (TCP/IP), RS-232C, EXT I/O, and analog output options, enabling integration with PLC or automation equipment.

4. Q: How fast is the measurement / response time?
   A: Typical response times are ~10 ms, depending on the mode (EX.FAST, FAST, MEDIUM, SLOW) and whether measuring Ω or V.

5. Q: How does it handle static or noise on production lines?
   A: The BT3561A is designed to withstand ±30 kV static discharge (IEC 61000-4-2 contact discharge) and improved tolerance for connection path resistance (cable, relay, probe contact impedance) to reduce measurement errors and downtime.