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29

Incorrect Battery Polarity

Fronius · Perfect Charging

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The connected battery has been connected with reverse polarity to the charger. This is a critical fault that can cause severe and immediate damage to both the battery and the charger's power electronics if current is allowed to flow.

Häufige Ursachen

  • The battery cables have been physically connected to the charger terminals in reverse (positive to negative, negative to positive).
  • Incorrect wiring of the battery pack itself or its external connections.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    IMMEDIATELY disconnect the battery from the charger to prevent further damage.

  2. 2

    Visually inspect and verify that the positive (+) terminal of the battery is connected to the positive (+) terminal of the charger, and the negative (-) terminal of the battery is connected to the negative (-) terminal of the charger.

  3. 3

    After correcting the polarity, inspect both the charger and the battery terminals for any signs of damage (e.g., burning, melting) that may have occurred.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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