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Samantha FloresSep 10, 2025
Why is my Eaton 9E6Ki UPS on battery when mains voltage is present?
- VVanessa RossSep 10, 2025
If your Eaton UPS is running on battery even when mains voltage is present, it means the input voltage is outside the permitted tolerance range for mains operation. This indicates a problem with the mains supply. Wait for the input mains voltage to return within the acceptable range; the UPS will automatically switch back to mains operation.