Sencor SRV 9150WH Replacement Battery 14.4V 2600mAh

Sencor SRV 9150WH / SRX-0911 — 14.4V Li-ion Replacement Battery

This 14.4V 2600mAh lithium-ion battery pack fits the Sencor SRV 9150WH and SRX-0911 robotic vacuum cleaners. It replaces the original cell when the vacuum can no longer complete cleaning cycles or fails to hold a charge. Capacity is rated at 37.44Wh — matched to the product data, not estimated from third-party sources.

• SRV 9150WH and SRX-0911 compatibility: Both models run the same 14.4V power rail and share an identical battery bay format, so a single cell serves either unit without modification to connectors or mounting.
• Bench tested on actual hardware: We cycled this battery through full charge and discharge sequences on a 14.4V robotic vacuum load profile. The BMS held voltage within spec and did not trip on normal motor start current.
• Dock charging habit on the SRV 9150WH: Do not leave the vacuum sitting on the charging dock indefinitely between uses. Continuous trickle charge from the dock accelerates capacity fade in Li-ion cells. Charge to full, then remove the unit from the dock until the next cleaning session.

Suction dropping before the battery indicator reaches low

The SRV 9150WH motor draws more current than its rated load when airflow is restricted — typically from a clogged filter or full dustbin. That extra draw causes voltage to sag earlier than the indicator expects, so suction weakens while the display still shows adequate charge. The BMS reads cell voltage, not remaining capacity, so it does not flag the fault until voltage crosses the cutoff threshold. Clean the filter and empty the bin before assuming the new battery is at fault.

Motor cutting out mid-cycle and then recovering on its own

This pattern is a BMS overcurrent trip, not a faulty battery or a dead cell. When the motor sustains a restricted airflow condition — partial filter blockage is the usual cause — current draw spikes above the BMS protection threshold and the circuit opens. The BMS resets automatically once current drops and cell temperature stabilises, which is why the vacuum appears to recover without intervention. Inspect the filter and check the brush roll for tangled debris before the next cycle; if the trip repeats, the restriction, not the battery, is the root cause.