Pure Clean PUCRC660 Replacement Battery 14.4V 2600mAh

Pure Clean PUCRC660 / PUCRC675 / PUCRC850 — 14.4V Li-ion Replacement Battery

This is a 14.4V 2600mAh lithium-ion battery for the Pure Clean PUCRC660, PUCRC675, and PUCRC850 robotic vacuum cleaners. It replaces the original cell pack when capacity has degraded to the point the unit can no longer complete a full cleaning cycle. Voltage and connector match the original so the onboard BMS accepts the swap.

• PUCRC660, PUCRC675, PUCRC850 compatibility: These three models share the same 14.4V battery bay, connector pinout, and BMS communication protocol. One cell pack covers all three without modification.
• Bench tested on actual hardware: We ran this battery through charge and discharge cycles on a PUCRC-series unit. The BMS accepted the cell, balanced across all nodes, and the vacuum completed full floor passes without a mid-cycle cutoff.
• Dock charging habit on robotic vacuums: Do not leave the PUCRC660 sitting on the dock between uses indefinitely. Continuous trickle charging accelerates capacity fade in lithium cells faster than normal cycle wear. Charge to full, then remove from the dock until the next run.

Suction dropping before the battery indicator reaches low

The PUCRC660's motor draws harder when airflow is restricted — a partially clogged filter or blocked intake forces the motor to pull more current than rated. The BMS reads that surge as an abnormal load and throttles power to the motor before the battery gauge reflects the actual cell state. The result is noticeably weaker suction while the indicator still shows mid-charge. Clear the filter and check the dustbin seal before assuming the battery is at fault.

Motor cuts out mid-run then restarts on its own

This is a BMS overcurrent trip, not a dead battery. When the vacuum hits a carpet edge or sustained resistance, motor current spikes briefly above the BMS threshold and the pack shuts output to protect the cells. The BMS resets automatically once current drops, which is why the unit restarts seconds later. Check the brush roll for tangled hair or debris and clean the filter — both cause the sustained high-draw condition that triggers the trip repeatedly.