Concept VR2020 Replacement Battery 14.4V 3350mAh Li-ion

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

This is a 14.4V 3350mAh Li-ion replacement battery for the Concept VR2020, VR2100, VR2110, and VR3105 cordless stick vacuums. It matches the OEM part number PNC423894511 and uses the same connector and BMS handshake as the original pack. Capacity is 3350mAh (48.24Wh) — identical to the factory specification.

• VR2020, VR2100, VR2110, VR3105 fitment: These four models share the same 14.4V battery platform, connector pinout, and BMS communication protocol. A battery seated in any one of them will initialise identically across all four — same voltage rail, same charge handshake.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the VR2020 platform. The BMS accepted the charger handshake on first connection, held voltage within spec under sustained motor load, and triggered overcurrent protection correctly when we simulated a blocked intake.
• Dock charging practice for this vacuum: Do not leave the vacuum sitting on the charging dock between uses. These stick vacuums draw a low-level trickle charge continuously while docked, which accelerates cell degradation. Charge to full, then remove from the dock and store separately.

Suction dropping before the battery indicator reaches low

The VR2020 motor draws significantly more current when airflow is restricted — a partially blocked filter can push draw well above the rated load. The BMS responds by reducing output voltage to stay within safe current limits, and the motor slows before the battery indicator registers low. The indicator reads state of charge, not motor load. Clean or replace the filter first — if suction recovers immediately, the battery was not the cause.

Motor cutting out and recovering mid-clean

This is a BMS overcurrent trip, not a dead battery. When the vacuum hits heavy carpet or a partial blockage, motor current spikes sharply. If the BMS trips, the motor cuts power for a few seconds then resets once current drops. This cycle — cut out, recover, cut out again — repeats until the restriction is cleared. Check the filter and inlet for blockage before assuming the battery is at fault. A fully unobstructed intake eliminates most intermittent cutout faults.