Shark IZ201 Replacement Battery 25.2V 3000mAh

Shark IZ201 / IZ462H Series — 25.2V Li-ion Replacement Battery (XSBT700)

This 25.2V 3000mAh lithium-ion battery pack fits the Shark IZ201, IZ251, IZ462H, IZ482H, and 17 additional IZ-series cordless stick vacuums. It replaces OEM part numbers XSBT700, XSBT700EU, XSBT750, and XSBT750EU. The pack slots directly into the battery bay and communicates with the vacuum's onboard BMS before the motor will spin.

• IZ-series compatibility: All listed models share the same 25.2V cell architecture, connector pinout, and BMS handshake protocol. The vacuum's control board verifies voltage and authentication before enabling the motor — any cell short of 25.2V nominal will not pass that check.
• Bench tested on actual hardware: We ran this pack on an IZ462H under sustained carpet load. The BMS held steady through repeated high-draw cycles, maintained voltage above the motor cut-off threshold, and passed the authentication handshake on first connection.
• Dock charging behaviour: Do not leave the vacuum on the charging dock continuously. These IZ-series vacuums apply a trickle charge when docked, which degrades cell capacity noticeably faster than charge-and-remove cycling. Charge to full, then pull it off the dock.

Suction dropping before the battery indicator reaches low

The IZ201 motor draws significantly more current when airflow is restricted — a partially blocked filter or obstructed brush roll forces the motor to work harder, pulling amps the battery wasn't rated to sustain at full suction. Voltage sags under that load, and the vacuum reads the sag as a depleted pack before the indicator has moved. Clean the foam and felt filters, check the brush roll for hair wrap, and retest. Suction loss that disappears after a filter clean is a motor-draw issue, not a battery fault.

Motor cuts out mid-clean then recovers after a pause

This is a BMS overcurrent trip, not a dead battery. When the brush roll meets sustained resistance — thick carpet, a blockage, or a heavily clogged filter — current draw spikes past the BMS protection threshold and the pack shuts the output rail. After 30–60 seconds the BMS resets and the vacuum runs again. The fix is removing the restriction, not replacing the battery. Clear the blockage, clean the filter, and confirm the brush roll spins freely before assuming the pack is faulty.