E10
Medion
Battery Communication / Calibration Error
Cordless vacuum shows E10 and the LED battery indicator behaves erratically (jumping from full to empty)
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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 battery management PCB inside battery pack, Poor contact between battery data pins and vacuum, Firmware miscalibration of battery gauge, Damaged battery sense wiring on main PCB
How to Fix / Troubleshooting
Safety first: Remove the battery before cleaning contacts. Do not short any battery terminals.
- Clean data contacts: Some Medion batteries have additional small data pins. Clean all contacts gently with a dry cloth.
- Battery reset (if supported): Fully charge the battery, then run the vacuum continuously on low power until it shuts off. Recharge fully again. This can recalibrate the fuel gauge on some models.
- Test with another battery: If a second battery shows normal indication, the original battery’s management PCB is likely faulty and the pack should be replaced.
- Inspect PCB (advanced): If all batteries show erratic readings, inspect the main PCB for damaged sense resistors or connectors. Replacement of the PCB may be required.
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Repair Difficulty
Medium
3/5
Required Part
Li-Ion Battery Pack
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