Hoover S1120 Replacement Battery 3.6V 3000mAh Ni-MH

Hoover S1120 — 3.6V Ni-MH Replacement Battery (93001498)

This 3.6V, 3000mAh Ni-MH battery replaces the original 93001498 cell in the Hoover S1120 cordless stick vacuum. It fits directly into the S1120's battery compartment and restores power to the motor. Capacity matches the product specification at 10.8Wh.

• S1120 battery fitment: The S1120 runs a single-cell 3.6V Ni-MH pack at a low voltage rail suited to the stick vacuum's compact motor. The 93001498 cell uses a specific physical footprint — 66.95 × 44.23 × 22.34mm — so confirm dimensions before fitting any alternative.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the S1120 platform. The BMS accepted the cell without error, and the motor drew current within normal operating range across both hard floor and low-pile carpet passes.
• Dock charging on the S1120: Do not leave the S1120 sitting on its charging dock permanently. Continuous trickle charging on Ni-MH cells accelerates capacity fade faster than intermittent charge cycles. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low on the S1120

The S1120 motor pulls higher current when the filter is partially blocked, because the fan works harder against restricted airflow. That extra draw causes voltage to sag at the cell before the charge indicator registers low. The vacuum feels like it's losing power when the real cause is increased load, not a depleted cell. Clean or replace the filter first — if suction recovers, the battery is not the problem.

Motor cuts out mid-clean then recovers after a short pause

This pattern is a BMS overcurrent trip, not a failed battery. When suction is sustained against a blockage or heavily soiled filter, current draw spikes past the cell's safe threshold and the BMS shuts the output. The pack recovers once temperature drops and the BMS resets. Clear any blockage in the nozzle or hose, check the filter is clean, then restart — the cutout should not repeat under normal load.