Introduction
If your ORFELD EV-660 has stopped charging entirely or rapidly starts and stops charging, your charging port is most likely the culprit.
Tools
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Place the vacuum on its side, with the screws facing towards you.
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Remove the 11.5 mm screws using a Phillips #1 screwdriver.
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Lift the battery slightly to reveal the pin connectors.
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Gently remove the four-pin connector connecting the charging port.
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Conclusion
To reassemble your device, follow these instructions in reverse order.