Rowenta Dual Force 2 in 1 Replacement Battery 18.5V 3500mAh

Rowenta Dual Force 2 in 1 — 18.5V Li-ion Replacement Battery (SS-9100043101)

This 18.5V 3500mAh Li-ion battery replaces the original pack in the Rowenta Dual Force 2 in 1 cordless vacuum. It fits both handheld and upright cleaning modes across the RH6735WH/AM0, RH6736WH/AM0, RH6737WH/AM0, and related models. Cross-reference OEM part numbers SS-9100043101, FS-9100033235, or V8260S5 before ordering.

• RH673x series compatibility: These models share the same 18.5V power rail, physical connector, and BMS handshake protocol. The replacement cell communicates correctly with the charger — no false error codes or charge rejection observed across the model range.
• Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the RH6735WH platform. The BMS held cutoff thresholds within spec under both low-load handheld mode and high-draw carpet cleaning. No thermal events or premature shutoffs during testing.
• Dock charging behaviour on this vacuum: Do not leave the Dual Force 2 in 1 on the charging dock continuously. These vacuums lack active dock-charge management — the cell stays in a trickle-charge state indefinitely, which accelerates capacity fade. Charge fully, then remove from the dock.

Suction dropping before the battery indicator reaches low

On the Dual Force 2 in 1, suction loss is often misread as a battery fault. The motor on this unit draws significantly more current when the filter is partially blocked — the BMS interprets the sustained high draw as a low-voltage condition and reduces output before the indicator registers. Check the filter first. A clean filter keeps motor draw at rated levels and stops early BMS throttling. If suction drops even with a clean filter, the cell may have degraded below usable capacity.

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

This is a BMS overcurrent trip, not a faulty power button. When restricted suction forces the motor to sustain high current draw — common on thick carpet or near a blockage — the BMS trips the circuit to protect the cell. The pack resets after the cell temperature drops, which is why the vacuum restarts after a pause. Clear any blockage in the nozzle or hose, then clean the filter. If trips continue on unrestricted surfaces with a new pack, check that the replacement cell voltage reads at least 18.5V before first use.