Nagano, Japan, 3rd October 2025 – Hioki E.E. Corporation proudly announces the release of the PW4001 Power Analyzer, a compact, field-ready solution engineered for the precision demands of modern mobility and energy testing. With its unprecedented combination of lab-grade accuracy, portability, and rugged environmental resistance, the PW4001 sets a new benchmark for real-world power measurement in electric vehicles (EVs), hybrid systems, and next-generation mobility platforms.

Development Background

The global shift to electrification is accelerating. The International Energy Agency (IEA) projects over 20 million EVs will be sold in 2025, more than one in four cars worldwide¹, following a record 17 million sold in 2024. This rapid growth is driving demand for precise, real-world evaluation of vehicle efficiency, from extreme environments to road testing.

Traditional benchtop analyzers remain essential in labs, but engineers now require portable, resilient instruments that deliver high accuracy in the field. The PW4001 Power Analyzer was developed to meet this need—enabling fast, reliable measurement of inverter signals, transient power behavior, and battery durability, whether in the lab or on the road.
 

• 1: More than 1 in 4 cars sold worldwide this year is set to be electric as EV sales continue to grow

Key Features

1. Lab-Level Accuracy in the Field

Reliable evaluation of energy consumption and driving range is critical, even at low power inputs. The PW4001 delivers this assurance with ±0.04% basic accuracy from DC to 50/60 Hz.

2. High-Speed, High-Bandwidth Performance

Engineers can confidently evaluate power conversion efficiency and switching losses in advanced SiC inverter PWM motor systems, thanks to the PW4001’s 2.5 MHz sampling rate and 600 kHz bandwidth that capture high-frequency power signals with precision.

3. Portable, Rugged, and Road-Ready

From test benches to cold chambers and on-road validation, engineers can rely on the PW4001 in any environment—its lightweight 4.6 kg design, external DC powering, and wide –20°C to +50°C operating range make it ready for versatile use.

4. Faster Setup, Safer Testing

Quick, safe setup and efficient workflow—whether in the lab or the field—are made possible by the PW4001’s direct CAN voltage input and OBD-II compatibility, which streamline vehicle-side installation.

Main applications

Automotive Certification and Compliance Testing

Precision power measurement for EVs, HEVs, PHEVs, and FCVs. The PW4001 delivers trusted results that comply with global testing standards such as WLTP and SAE J1634, making it the ideal solution for type approvals and certification audits.

Real-Drive Testing

Compact, portable, and DC-powered for safe and flexible road-based measurements. Whether mounted in passenger cars, motorcycles, or e-mobility platforms, the PW4001 provides highly accurate data that reflects actual driving conditions.

Battery and Durability Studies

The PW4001 supports long-term validation of energy storage systems by delivering stable, repeatable measurements. Engineers can reliably assess battery efficiency, thermal performance, and lifecycle durability. Beyond EV applications, the PW4001 is equally effective for next-generation fields such as Energy Storage Systems (ESS) and backup battery units for data centers.

Product Lineup

• Power Analyzer PW4001-01
• Power Analyzer PW4001-02 (D/A output option)
• Power Analyzer PW4001-03 (Motor Analysis option)
• Power Analyzer PW4001-04 (External power source option)
• Power Analyzer PW4001-05 (Full option: D/A output, Motor Analysis, External power source)

Link

For more information, please refer to the Power Analyzer PW4001.

Contact us

For inquiries such as quotes, demonstrations, and trial usage, please use Hioki’s contact form for a personalized reply from your closest or most appropriate Hioki representative.

• The information provided is current as of the date of publishing.
• Please note that prices, specifications, and other information contained in this texts are subject to change without notice.
• The company names and product names used in this text are registered trademarks or trademarks of their respective companies.

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