Autel
Current Measurement Calibration Drift
Charging current displayed on the charger or in the app is inaccurate compared to the vehicle or external meter.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Aging current transformers, Loose CT wiring, Firmware calibration error, Faulty internal meter module
How to Fix / Troubleshooting
Safety first: Only qualified persons should access internal metering circuits.
- Compare readings: Note the difference between the charger’s reported current and the vehicle or an external clamp meter.
- Firmware and calibration: Check for firmware updates and any available calibration procedures in Autel’s service documentation.
- Inspect CT connections: With power off, verify that CTs are correctly oriented and securely connected.
- Replace metering components: If discrepancies remain large, replace the internal energy meter module or CT assembly.
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Repair Difficulty
Hard
4/5
Required Part
Autel EVSE Current Transformer (CT) Assembly
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