Black&Decker DV9610N Replacement Battery 9.6V 3000mAh

Black&Decker DV9610N Series — 9.6V Ni-MH Replacement Battery (90566793)

This is a 9.6V, 3000mAh Ni-MH battery for the Black&Decker DV9610N cordless handheld vacuum and compatible models including the WD9610, DV9610AN, and DV9610ECN. It replaces OEM part number 90566793. When the original cell loses charge capacity, this swap restores full motor power without replacing the whole unit.

• DV9610 and WD9610 platform fit: These models share the same 9.6V cell format, connector pinout, and charging circuit. One battery SKU covers the full range without modification.
• Bench tested on actual hardware: We ran this battery through charge and discharge cycles on the DV9610 platform. The BMS held cutoff correctly at low voltage, and the charger handshake completed without fault codes.
• Dock charging behaviour on this vacuum: Do not leave the vacuum sitting on the charging dock continuously. These Ni-MH cells develop capacity fade significantly faster under constant trickle charge than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

On the DV9610, the motor draws more current when airflow is restricted — a clogged filter forces the motor to work harder and voltage sags early. The battery's BMS reads that voltage sag as low charge and throttles output before the cell is actually depleted. Clean or replace the filter first, then retest. If suction stays weak with a clean filter and a fully charged replacement battery, the motor brushes may be worn.

Motor cuts out mid-use then recovers after a pause

This is a BMS overcurrent trip, not a dead battery. When the vacuum picks up a blockage or runs against dense carpet pile, current draw spikes past the BMS threshold and the circuit opens to protect the cells. The BMS resets after a short cooling period, which is why power comes back without touching the charger. Clear any blockage, check the filter for restriction, and confirm the battery rests at or above 9.6V open-circuit before resuming use.