Philips FC8772 Replacement Battery 14.8V 2600mAh

Philips FC8772 / FC8710 Series — 14.8V Li-ion Replacement Battery (CP0111/01)

This is a 14.8V, 2600mAh Li-ion battery pack for the Philips FC8772, FC8710, FC8776, FC8705, and over 25 additional cordless stick vacuum models in this series. It replaces OEM part numbers CP0111/01, 4ICR19/65, and 3000-014-15881. The pack slots directly into the handle unit and restores suction power to the motor drive circuit.

• FC87xx series compatibility: These models share a common 14.8V four-cell Li-ion architecture, the same physical connector, and an identical BMS handshake protocol — which is why a single pack covers the full range without modification.
• Bench tested on actual hardware: We ran this pack through charge cycles on an FC8772 unit and monitored cell balance across all four cells. The BMS held the cutoff voltage correctly at low charge and did not trip under normal motor-start draw.
• Dock charging habit for this vacuum: Do not leave the vacuum sitting on the dock between uses. The FC87xx dock does not terminate charge — it trickle-charges continuously, which accelerates capacity fade in Li-ion cells. Charge fully, then remove from the dock.

Suction dropping before the battery indicator reaches low

On the FC8772, the motor draws significantly more current when the filter is partially blocked — often two to three times the rated draw. The BMS reads this sustained high current as a low-voltage condition and begins throttling power to the motor before the indicator LED registers a low state. The result feels like a weak battery when the actual cause is restricted airflow forcing an overcurrent condition. Clean or replace the filter first — if suction recovers and holds, the battery is not the issue.

Motor cuts out mid-use and then restarts after a short pause

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — by a blocked filter, a jammed brush roll, or heavy carpet — the motor stalls briefly and pulls a spike of current above the BMS threshold. The BMS cuts power to protect the cells, then resets after a few seconds once current demand drops. The fix is to clear the restriction, not replace the battery. If the cutout happens on an unobstructed surface with a clean filter, measure pack voltage under load — it should hold above 13.5V during normal operation.