ChargePoint
Energy Metering Inaccuracy
ChargePoint app shows incorrect energy usage or cost for sessions; kWh seems too high or too low.
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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
Faulty internal current transformer (CT), Calibration drift in metering IC, Incorrect voltage assumption (208 vs 240 V), Firmware bug in reporting
How to Fix / Troubleshooting
Note: This affects billing/monitoring, not basic charging safety.
- Step 1 – Cross-check:
- Compare reported kWh with your utility meter or another trusted meter over a few sessions.
- Step 2 – Check configuration:
- Ensure the charger is configured for the correct supply (208 V vs 240 V) if such a setting exists in the app or installer menu.
- Step 3 – Firmware update:
- Update firmware to the latest version.
- Step 4 – Hardware metering components (qualified):
- If large discrepancies persist, the current transformer (CT) or metering circuit on the main control board may be faulty.
- Replace the CT or main board as recommended by ChargePoint.
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Repair Difficulty
Medium
3/5
Required Part
Current Transformer (CT)
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