King Cleaning od TV 14.4V Replacement Battery 4000mAh Ni-MH

King Cleaning od TV — 14.4V Ni-MH 4000mAh Replacement Battery

This is a 14.4V, 4000mAh Ni-MH replacement battery for the King Cleaning od TV cordless vacuum. It slots in where the original cell has degraded and can no longer hold a working charge. Dimensions are 179.00 x 51.00 x 52.00mm — confirm these match your unit before ordering.

• od TV platform fit: The od TV series runs a 14.4V Ni-MH architecture with a fixed connector and BMS profile tied to that voltage rail. Swapping to this cell restores the original charge cycle without triggering the low-voltage lockout the motor controller watches for.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge runs under vacuum motor load. The BMS held cutoff thresholds correctly and the cell reached rated voltage without heat anomalies at the terminal connections.
• Dock charging habit on cordless vacuums: Do not leave this vacuum on the charging dock permanently. Ni-MH cells on continuous trickle charge lose capacity significantly faster than cells charged only when depleted. Charge to full, then remove the unit from the dock.

Suction dropping before the battery indicator reaches low

Ni-MH cells exhibit voltage sag under sustained motor load before the state-of-charge indicator registers a problem. On cordless vacuums, this appears as noticeably weaker suction while the indicator still shows mid-charge. A partially blocked filter compounds the issue — the motor draws above rated current trying to compensate, which accelerates the voltage drop. Check and clean the filter first, then run the vacuum on a full charge to confirm whether the issue is filter restriction or genuine cell capacity fade.

Motor cutting out and then recovering mid-clean

This is a BMS overcurrent trip, not a fault in the motor itself. It happens when sustained restricted airflow forces the motor to draw more current than the protection circuit allows. The BMS cuts power to prevent cell damage, then resets once current demand drops. Clear the filter and check the brush roll for hair or debris wrap — if the cut-out stops after clearing restrictions, the battery and BMS are functioning exactly as intended.