Pure Clean PUCRC105 Cordless Vacuum Compatible Battery 11.1V

Pure Clean PUCRC105 — 11.1V Li-ion Replacement Battery

This 11.1V 2600mAh Li-ion battery replaces the original pack in the Pure Clean PUCRC105 robotic vacuum. It powers the drive motors, suction fan, and onboard navigation system. When the original cell degrades, cleaning cycles shorten and the unit returns to dock early — this battery restores normal operation.

• PUCRC105 fit: The PUCRC105 uses an 11.1V three-cell Li-ion pack to supply both the navigation board and the suction motor from a single source. Voltage and connector position must match exactly — this pack meets both requirements for that unit.
• Bench tested on actual hardware: We cycled this pack through full discharge and recharge sequences, monitoring BMS cutoff behaviour under simulated motor-start surges. The protection circuit held within spec across repeated draws without false tripping.
• Dock charging habit on the PUCRC105: Do not leave the PUCRC105 sitting on its charging dock permanently. Continuous trickle charge accelerates capacity fade in three-cell Li-ion packs like this one. Charge to full, then remove it from the dock until the next scheduled clean.

Suction dropping before the battery indicator reaches low on the PUCRC105

This happens when the suction motor draws more current than the BMS expects — usually because the filter is partially blocked. Higher motor resistance increases current draw, and the BMS reads that as a low-voltage event before the cell is actually depleted. The unit throttles fan speed to protect the pack, which feels like suction loss. Clean or replace the filter first, then check whether the symptom persists with the new battery installed.

PUCRC105 motor cuts out mid-cycle and then recovers after a pause

This is a BMS overcurrent trip, not a dead battery. When the suction path is restricted — blocked brush roll, full dustbin, or clogged filter — the motor stalls briefly and current spikes above the BMS threshold. The circuit opens to protect the cell, the unit pauses, then resets once current drops. Clear the restriction completely and confirm the dustbin is emptied before running another cycle. If trips continue with a clean filter and empty bin, measure resting pack voltage — a healthy fully charged pack should read at or above 12.6V.