Fronius · Perfect Charging
The battery charger experienced a timeout during the U1 (initial constant voltage) charging phase. This suggests the battery could not absorb current as expected or reach a stable state within the defined time, potentially indicating a battery health issue or charger malfunction.
Click steps to track your progress.
Verify the charger's output voltage and current measurement accuracy during the U1 phase.
Check the charger's configuration for the U1 phase timeout setting (parameter, if available) and ensure it is suitable for the battery type and condition.
Assess the battery's overall condition, as it may not be accepting charge properly due to age or damage.