About this replacement
Cecotec Conga Eternal Vital Series — 14.4V Li-ion Replacement Battery (CMICR18650-F8M7-4S1P)
This is a 14.4V, 2600mAh (37.44Wh) Li-ion battery pack for the Cecotec 05846 and Conga Eternal Vital range of cordless stick vacuums. It fits the Conga Eternal Laser Vital, Max Vital, and Pet Vital models. The 4-cell configuration matches the original pack geometry and connector orientation.
- Conga Eternal Vital platform fit: The Laser Vital, Max Vital, and Pet Vital all run the same 14.4V power rail with an identical 4S1P cell arrangement and shared BMS connector. One pack covers the full Vital lineup without adapter or modification.
- Bench tested on actual hardware: We cycled this pack through full discharge and recharge sequences on a Conga Eternal unit, confirmed BMS handshake with the onboard charger circuit, and verified cutoff voltage behaviour under sustained motor load.
- Dock charging habit on Conga Eternal models: The Conga Eternal charging dock does not interrupt current when the pack reaches full charge. Leave the vacuum on the dock only until the charge indicator shows full, then remove it. Continuous dock storage accelerates capacity fade in lithium cells at this voltage class.
Suction dropping before the battery indicator reaches low on the Conga Eternal
This happens because the motor draws more current than rated when the filter is partially blocked, which pulls cell voltage down early. The BMS reads that voltage sag as a low-charge condition and reduces output before the fuel gauge catches up. Clean or replace the filter first — if suction recovers and holds through a full charge cycle, the filter was the cause. If voltage sag continues with a clean filter, the cells are no longer holding charge above the BMS threshold under load.
Motor cutting out mid-use and then recovering after a few seconds
This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked nozzle, clogged filter, or dense carpet contact — the motor stalls slightly and current spikes above the BMS protection limit. The BMS disconnects the pack, the motor stops, and then resets within seconds once current normalises. Clear the blockage and check the filter before assuming the pack is faulty. If trips continue on a clean, unobstructed vacuum, measure resting voltage — a healthy pack at partial charge should read above 13.0V.