Shark SV745 Replacement Battery 12V 2000mAh XBP745

Shark SV745 — 12V Ni-MH Replacement Battery (XBP745)

This is a 12V 2000mAh Ni-MH replacement battery for the Shark SV745 cordless stick vacuum. It fits the SV745 handheld unit directly, using the OEM part number XBP745. Replace it when suction has dropped noticeably and the original cell no longer holds a full charge.

• SV745 fitment: The SV745 runs a 12V Ni-MH cell with a specific connector and BMS communication path. This replacement matches that voltage rail and connector, so the vacuum's charge detection circuit recognises the cell correctly.
• Bench tested on actual hardware: We cycled this battery through full charge and discharge on the SV745 platform. The BMS accepted the cell without a fault flag, and motor draw sat within the rated current range throughout the test.
• Dock charging on the SV745: Do not leave the SV745 sitting on the charging dock permanently. Continuous trickle charge on Ni-MH cells causes capacity fade faster than normal use. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

A partially blocked filter forces the SV745 motor to draw more current than rated. That extra draw causes voltage sag in the Ni-MH cell, and the motor loses speed before the charge indicator shows anything wrong. The vacuum feels like a battery fault, but the battery is not the cause. Clean or replace the filter first — if suction returns immediately, the cell is fine.

SV745 motor cutting out mid-clean and then recovering

This is a BMS overcurrent trip, not a dead battery. When the SV745 runs sustained suction against a blockage or a clogged filter, current draw spikes and the BMS interrupts power to protect the cell. The motor recovers after a few seconds once current normalises. Check the filter and the inlet path for blockages before assuming the battery is failing — the cutout at that stage typically means restricted airflow, not a worn cell.