Whirlpool W6 18V Cordless Vacuum Replacement Battery 2200mAh

Whirlpool W6 / WVC-LI380Y — 18V Li-ion Replacement Battery

This 18V 2200mAh Li-ion battery replaces the original pack in the Whirlpool W6 and WVC-LI380Y cordless vacuum cleaners. It slots into the same battery bay and connects to the same charging and motor control circuit as the factory pack. Use the product data capacity of 2200mAh (39.6Wh) as the reference — not third-party listings.

• W6 and WVC-LI380Y compatibility: Both models run the same 18V motor rail and share an identical battery bay geometry and connector pinout. One pack covers both without any modification.
• Bench tested on actual hardware: We ran the pack through full charge-discharge cycles on a cordless vacuum test rig. The BMS held voltage above the motor cutoff threshold under sustained suction load and tripped correctly at the low-cell threshold before damage could occur.
• Dock charging discipline for the W6: Remove the vacuum from its charging dock once the battery reaches full charge. Cordless vacuums left on the dock indefinitely receive a continuous trickle current that accelerates capacity fade in Li-ion cells. Charge when depleted, then remove.

Suction dropping before the battery indicator reaches low on the W6

This happens when a partially blocked filter forces the motor to draw more current than its rated load. The voltage across the battery pack sags under that elevated draw, and the motor loses speed before the BMS registers a low-cell condition. The indicator reads the cell voltage at rest, not under load — so it shows mid-charge while suction is already weak. Clean or replace the filter first; if suction restores, the battery is fine.

W6 motor cuts out mid-clean then recovers after a short pause

This is a BMS overcurrent trip, not a flat battery. When airflow is restricted — blocked filter, blocked nozzle, or hair wrapped around the brush roll — the motor spikes well above its normal draw. The BMS trips the output to protect the cells. After a brief pause the BMS resets and the motor restarts. Clear the restriction, then confirm pack voltage reads at least 18V off the charger before ruling out a weak cell.