How to Fix / Troubleshooting

Safety first: Isolate power before replacing any internal board that contains a battery.

Step 1 – Network time: Ensure the charger has internet access so it can synchronize time via NTP if supported.
Step 2 – Manually set time: Use the Alfen configuration interface to manually set the correct date and time.
Step 3 – Check firmware: Update to the latest firmware, as some RTC issues are resolved in software.
Step 4 – RTC battery: If the charger loses time after every power cycle, the RTC backup battery on the PCB may be depleted and require board replacement.
When to call a technician: RTC chip or board replacement should be done by a qualified service technician.

Charger shows E020; internal clock or time synchronization error affecting schedules and logs.

Possible Causes