34
Ah Exceeded
Fronius · Perfect Charging
What does 34 mean?
The total Ampere-hours (Ah) delivered to the battery during charging has exceeded a predefined limit. This is typically a safety mechanism intended to prevent overcharging based on the expected or configured battery capacity, indicating a mismatch or a faulty measurement.
Common Causes
- The actual capacity of the connected battery is significantly lower than expected or configured in the charger's settings.
- An incorrect Ah limit parameter has been set in the charger, allowing it to deliver more charge than safe for the battery.
- A malfunction in the charger's current integration or Ah measurement circuit, leading to inaccurate accumulation of delivered charge.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the actual rated capacity of the connected battery against its nameplate or specifications.
- 2
Check the charger's Ah limit parameter and adjust it to accurately match the battery's rated capacity if necessary.
- 3
Perform a diagnostic check on the charger's current measurement and Ah accumulation function to ensure accuracy.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Perfect Charging