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Deeply Discharged Battery (Safety Charge)

Fronius · Perfect Charging

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The connected battery is heavily discharged, meaning its voltage is significantly below its normal operating range. The charger has initiated a special 'safety charge' or 'recovery charge' phase at a very low current to safely bring the battery voltage up to a level where normal charging can begin. This is a protective measure to prevent damage to deeply discharged batteries.

Vanlige årsaker

  • Battery has been left in a discharged state for an extended period
  • High parasitic loads have completely drained the battery
  • Faulty battery that cannot retain charge, leading to deep discharge

Reparasjonssteg & Sjekkliste

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  1. 1

    Monitor the battery voltage to ensure it slowly rises during the safety charge phase

  2. 2

    Do not interrupt the safety charge process; allow the charger to complete this phase automatically

  3. 3

    If the battery voltage does not rise after a prolonged safety charge, the battery may be unrecoverable or faulty

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Verifisert teknisk data. Sist oppdatert: March 2026

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