SereneLife PUCRC660 Cordless Vacuum Replacement Battery 14.4V 2600mAh

SereneLife PUCRC660 / PUCRC675 — 14.4V Li-ion Replacement Battery

This 14.4V 2600mAh Li-ion battery replaces the original power cell in the SereneLife PUCRC660 and PUCRC675 cordless stick vacuums. It restores motor power when the original cell no longer holds a useful charge. Voltage and capacity match OEM spec exactly — 14.4V, 2600mAh (37.44Wh).

• PUCRC660 and PUCRC675 compatibility: Both models run the same 14.4V motor rail and use the same battery connector and BMS handshake, which is why one cell covers both. Swapping to a different voltage would prevent the motor from reaching operating speed.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a PUCRC-series unit. The BMS engaged overcurrent protection correctly under restricted airflow and recovered cleanly once suction load dropped back to normal.
• Dock charging on stick vacuums: Do not leave this vacuum permanently seated on the charging dock. Continuous trickle charging on Li-ion cells accelerates capacity fade. Charge to full, then remove from the dock until the next use.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the BMS allows under sustained load — not because the battery is empty. A partially blocked filter forces the motor to work harder, pulling current above the cell's rated discharge threshold. The BMS throttles output to protect the cell, and suction drops noticeably. Clean or replace the filter first; if suction recovers, the battery is not the cause.

Motor cuts out mid-clean then restarts after a short pause

This is a BMS overcurrent trip, not a failed battery. When suction is restricted — blocked brush roll, clogged filter, or a sealed floor surface with no airflow — the motor stalls briefly and current spikes. The BMS shuts the cell output off to prevent damage, then resets once the temperature and current drop. Clear the restriction, then power the unit back on. If it still trips on a clean filter, check that the battery contacts are seating fully — a partial connection raises resistance and lowers the trip threshold.