Vileda Quick & Clean Replacement Battery 3.7V 2600mAh

Vileda Quick & Clean — 3.7V Li-ion Replacement Battery (8654396211)

This is a 3.7V 2600mAh lithium-ion battery for the Vileda Quick & Clean cordless vacuum cleaner (VI409842). It replaces OEM part 8654396211 and fits directly into the vacuum's battery compartment. Capacity is rated at 9.62Wh — identical to the original specification.

• Quick & Clean and VI409842 compatibility: Both model references share the same motor voltage rail, battery compartment dimensions, and BMS handshake protocol. The 3.7V cell is the correct voltage for the motor controller — fitting a higher-voltage cell trips the protection circuit and prevents startup.
• Bench tested on actual hardware: We ran this cell through the Quick & Clean's charge cycle and confirmed the BMS accepted the handshake without fault flags. The motor controller reached full operating speed and the charge indicator behaved as expected on the dock.
• Dock charging practice for the Quick & Clean: This vacuum's dock applies a trickle charge continuously when connected. Remove the vacuum from the dock once charging is complete. Leaving it docked permanently accelerates capacity fade on the 3.7V Li-ion cell faster than normal discharge cycles would.

Suction dropping before the battery indicator reaches low

The Quick & Clean's motor controller reduces power output when cell voltage sags under load — this happens before the indicator registers low. A clogged filter forces the motor to draw more current than rated, which accelerates the voltage drop. The BMS interprets this as a low-cell condition and throttles output. Clean or replace the filter first, then check whether suction holds steady under normal carpet load.

Motor cuts out briefly then restarts during use

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked nozzle, saturated filter, or heavy carpet fibres — the motor draws a sustained current spike above the cell's rated limit. The BMS opens the discharge circuit to protect the cell, then resets after a few seconds. Clear the blockage, check the filter, and confirm the nozzle is unobstructed before restarting.