208

TagID Battery Master Data Invalid

Fronius · Perfect Charging

What does 208 mean?

The essential battery master data stored in the TagID module is either invalid or not available. This data is fundamental for the charger to properly identify the battery, apply correct charging algorithms, and ensure safe operation.

Common Causes

  • Corrupted or accidentally erased master data within the TagID memory.
  • The TagID module was incorrectly programmed or was not programmed at all during manufacturing or setup.
  • A faulty memory chip within the TagID module.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Attempt to reprogram the battery master data into the TagID module using appropriate service tools and software.

  2. 2

    Verify that the TagID programming process was completed successfully and that the data is now readable.

  3. 3

    If data cannot be restored or rewritten, the TagID module may be defective and require replacement.

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Verified technical data. Last updated: March 2026

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