Mennekes
RTC Drift / Configuration Issue
Charger’s internal clock-based functions (e.g., scheduled charging, logging timestamps) are inaccurate.
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Possible Causes
RTC not synchronized to NTP, Incorrect timezone setting, Aging RTC crystal, Weak RTC backup battery
How to Fix / Troubleshooting
Safety first: No high-voltage work required.
- Set correct time: Use the Mennekes configuration interface to set the correct time and timezone.
- Enable NTP: If networked, configure a reliable NTP server for automatic synchronization.
- Replace RTC battery: If time is lost after power outages, replace the RTC backup battery or main PCB as per Mennekes instructions.
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Repair Difficulty
Easy
2/5
Required Part
Main Control PCB (RTC / Battery)
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