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ErrorLib — Industrial Fault Code Library

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27

Battery Not Supported

Fronius · Perfect Charging

What does 27 mean?

The connected battery's characteristics (e.g., chemistry, nominal voltage, communication protocol) are not recognized or supported by the battery charger. This prevents the charger from safely or correctly initiating a charge cycle.

Common Causes

  • Connecting a battery type (different chemistry, nominal voltage, or communication interface) that the charger is not designed to support.
  • Incorrect charger configuration for the connected battery type, or missing necessary charging profiles.
  • Missing or corrupted battery identification data (e.g., TagID) that the charger relies upon to recognize the battery.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the type and specifications of the connected battery against the charger's compatibility list or documentation.

  2. 2

    Check the charger's settings and parameters to ensure they are configured for the correct battery type, nominal voltage, and chemistry.

  3. 3

    Ensure that the battery's TagID or communication module (if present) is functioning and transmitting valid identification data to the charger.

Browse all codes in this manual (61)
Verified technical data. Last updated: April 2026

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101Gateway CAN Connect Timeout102Gateway No Back-end Connection103Gateway Charger/Registration Mismatch
Source: Fronius Perfect Charging
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