Concept VR2020 Cordless Vacuum Replacement Battery 14.4V 2600mAh

Concept VR2020 / VR2100 Series — 14.4V Li-ion Replacement Battery (PNC423894511)

This is a 14.4V 2600mAh lithium-ion battery for the Concept VR2020, VR2100, VR2110, and VR3105 cordless stick vacuums. It replaces OEM part number PNC423894511. Fit this when the original battery no longer holds charge or suction drops well before the indicator reaches low.

• VR2020 / VR2100 / VR2110 / VR3105 compatibility: These four models run the same 14.4V power rail and share an identical battery form factor and BMS handshake. One cell fits all four — no firmware or connector differences between them.
• Bench tested on actual hardware: We cycled this cell through the VR2020 motor under filter-restricted and clear-filter conditions. The BMS held the voltage rail steady during normal suction loads and tripped correctly on sustained overcurrent — no false cutoffs under standard use.
• Dock charging behaviour on these vacuums: The VR2020 series continues drawing a trickle current when left on the dock after a full charge. Remove the vacuum from the dock once the charge indicator shows full — leaving it docked permanently accelerates capacity fade on lithium cells.

Suction dropping before the battery indicator reaches low

This is a voltage sag problem, not a dead battery. When the filter is partially blocked, the motor draws more current than rated to maintain airflow. That extra draw pulls the cell voltage down faster than the indicator expects, so suction fades while the display still shows charge remaining. Clean or replace the filter first — if suction restores immediately, the battery was not the cause. If sag continues on a clean filter, the cell has degraded and this replacement will resolve it.

Motor cuts out mid-clean and restarts after a few seconds

This is a BMS overcurrent trip. It happens when sustained restricted airflow — a blocked filter or a tight carpet pile — forces the motor to draw above the BMS threshold. The BMS cuts output to protect the cell, then resets after the load drops. If clearing the filter stops the cutouts, the original cell is functional but weak. If cutouts continue on a clean filter, the cell's internal resistance has climbed high enough that normal motor-start current is triggering the trip — replace the battery and verify voltage recovers above 14.0V under load.