Euro Pro Shark V1720 4.8V Replacement Battery X9725H

Euro Pro Shark V1720 / V1725 Series — 4.8V Ni-MH Replacement Battery (X9725H)

This is a 4.8V 1500mAh Ni-MH replacement battery for the Euro Pro Shark V1720, V1725, and V1725H cordless handheld vacuums. It matches the original X9725H specification exactly — same voltage, same form factor, same connector orientation. When the original cell loses capacity and suction weakens before the indicator shows low, this is the direct swap.

• V1720, V1725, and V1725H compatibility: All three models share the same 4.8V battery bay, connector, and cell count. The BMS in each unit expects the same voltage profile, so one cell fits all three without modification.
• Bench tested on actual hardware: We cycled this cell through the V1720 motor under load and monitored BMS response. Voltage held steady across the discharge curve with no unexpected cutoff on normal suction draws.
• Dock charging habit on the V1720: Do not leave the vacuum sitting on the charging dock between uses. The V1720 charger does not cut off automatically — continuous trickle charge accelerates capacity fade in Ni-MH cells faster than in any other chemistry. Charge to full, then remove it from the dock.

Suction dropping before the battery indicator reaches low

This happens because the motor voltage sag starts well before the cell is fully discharged. On Ni-MH cells with degraded capacity, the voltage curve collapses earlier than the indicator threshold expects. The result is noticeably weaker suction while the indicator still shows charge remaining. A fresh X9725H cell restores the flat mid-discharge voltage profile the motor needs to hold consistent airflow.

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

This is a BMS overcurrent trip, not a faulty switch. It happens when a partially blocked filter forces the motor to draw more current than the BMS allows. The cell hits the current ceiling, the BMS cuts power, and the vacuum restarts once it cools. Clean or replace the filter first — if cutouts continue with a clear filter on a new cell, check the suction path for debris restricting airflow past the motor.