In the global EV charging solutions landscape, technical certifications are more than compliance stamps—they are silent assurances of performance and reliability. In Europe, especially in the highly demanding German market, PTB certification stands as a crucial technical “key” to market credibility and trust.

What Is PTB Certification?

PTB stands for Physikalisch-Technische Bundesanstalt, Germany’s National Metrology Institute. In the field of measurement, it is recognized as one of the most authoritative technical assessment bodies in Germany and worldwide.

• Nature: PTB certification is a voluntary, comprehensive technical competence assessment system.
• Focus: It verifies the measurement accuracy, long-term stability, environmental adaptability, and overall reliability of electrical energy metering devices (such as meters integrated in EV chargers).
• Positioning: Unlike mandatory legal metrology certifications, PTB certification pursues technical excellence, demonstrating that products can maintain top-tier performance under extreme and complex operating conditions.

(Image Source: Physikalisch-Technische Bundesanstalt)

Why Is PTB Certification Critical for EV Chargers?

For EV charging infrastructure, accurate energy measurement is the cornerstone of commercial operation and user trust. The value of PTB certification is reflected in several key aspects:

1. A Premium Passport to Market Entry:
   In Germany and many European markets that recognize German standards, PTB certification is a powerful indicator of technological leadership, significantly enhancing brand credibility and competitive strength.
2. Rigorous Validation of Extreme Performance:
   Certification tests simulate harsh conditions, ensuring that meters maintain minimal error margins (e.g., ±0.5%) across a wide temperature range from –40°C to 85°C. This guarantees metering accuracy in both severe cold and extreme heat.
3. An Endorsement of Quality and Reliability:
   Passing PTB’s stringent evaluation process indicates excellence in product design, component selection, and manufacturing quality control—directly contributing to long service life and low failure rates.

PTB vs. Eichrecht: Technical Excellence vs. Legal Compliance

PTB certification is often best understood in comparison with Germany’s Eichrecht (legal metrology) certification.

In short, Eichrecht is the legal license required for commercial billing in Germany, while PTB is a quality distinction that signals superior technical performance. Many high-end manufacturers choose to obtain both, demonstrating comprehensive capability across legal compliance and technical excellence.

INJET New Energy: Building Reliability Through Authoritative Certification

At INJET New Energy, our commitment to technical standards is embedded in product design from the outset. Represented by the Injet Swift Business series, our EV chargers integrate meters developed in strict accordance with PTB standards, while also complying with Germany’s Eichrecht calibration requirements.

• This means our core metering units not only meet the baseline requirements for EU market access, but also proactively pass PTB’s rigorous technical evaluation.
• Choosing INJET chargers with PTB-compliant metering technology means choosing measurement accuracy that stands the test of time and environment—delivering long-term operational stability and confidence.

Pursuing technical excellence. Building charging experiences you can trust.

If you would like to learn more about how INJET New Energy’s EV chargers—built on PTB-certified technology—can add value to your business, please visit our official website or contact our team directly for detailed solutions and technical documentation.

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