Dibea X500 Ni-MH Replacement Battery 14.4V 2000mAh

Dibea X500 / X580 / KK8 — 14.4V Ni-MH Replacement Battery

This is a 14.4V 2000mAh Ni-MH battery pack for the Dibea X500, X580, and KK8 cordless stick vacuums. It replaces the original cell when the factory pack no longer holds enough charge to complete a cleaning run. Capacity is rated at 2000mAh (28.8Wh), matching the original specification.

• X500, X580, and KK8 compatibility: These three models share the same 14.4V battery rail, connector footprint, and motor control circuit. The same pack fits all three without any modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the X500 motor assembly. The BMS responded correctly to both motor-start inrush current and sustained suction load without tripping or throttling output.
• Dock charging habit on cordless vacuums: Do not leave the vacuum sitting on the charging dock permanently. Ni-MH cells in continuous trickle charge degrade significantly faster than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the pack's internal resistance can sustain cleanly — voltage sags under load even though state-of-charge still reads normal. A partially blocked filter makes it worse because the motor works harder against restricted airflow, pulling the pack voltage down faster. The battery indicator measures resting voltage, not load voltage, so it lags behind what the motor is actually seeing. Clean the filter first, then retest suction under load.

Motor cutting out mid-clean and recovering after a short pause

This is a BMS overcurrent trip, not a dead battery. When suction is blocked — clogged filter, tangled brush roll, or a hard carpet pile — the motor current spikes past the BMS threshold and the pack shuts output to protect the cells. After a few seconds the BMS resets and power returns. The fix is to clear the restriction before the next run. If it trips on a clean, unblocked floor, check that pack voltage at rest sits above 13.0V before starting.