AEG CX8-2-80DB Cordless Vacuum Replacement Battery 33.3V 3000mAh

AEG CX8-2-80DB Series — 33.3V Li-ion Replacement Battery (140112530260)

This is a 33.3V, 3000mAh Li-ion battery for the AEG CX8-2-80DB and related CX8 cordless stick vacuums. It fits the CX8-2-95BM, CX8-2-95GM, CX8-2-95IM, and several other models in the same series. Swap it in when the original battery no longer holds enough charge to complete a cleaning session.

• CX8 series compatibility: These models share the same 33.3V battery rail, connector footprint, and BMS handshake protocol. The same cell pack covers the full CX8 line — OEM part numbers 140112530260, 140112530245, CX8280DB, 140112530039, and 6.01.52.11-0 all cross-reference to this specification.
• Bench tested on actual hardware: We cycled this battery through the CX8 vacuum's motor under both carpet and hard-floor loads. The BMS managed current draw without tripping on normal suction cycles, and cell voltage stayed within expected range across full discharge.
• Dock charging discipline on CX8 vacuums: Do not leave the vacuum sitting on the charging dock permanently. Continuous dock charging on Li-ion cordless vacuums accelerates capacity fade faster than intermittent use-and-charge cycles. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the BMS expects — not because the cell is empty, but because airflow restriction forces the motor to work harder. A partially blocked filter raises current draw, which causes voltage to sag at the cell level. The BMS reads the sag as low battery and reduces motor power before the indicator catches up. Clean the filter first; if suction recovers, the battery was not the fault.

Motor cutting out mid-session and recovering after a short pause

This is a BMS overcurrent trip, not a dead battery. It happens most often when suction is sustained against a blockage or a heavily loaded carpet — the motor pulls above the BMS current threshold, and the protection circuit shuts output down temporarily. The pack recovers once temperature and current drop back inside limits. Clear any blockage, check the filter, and confirm the inlet is unobstructed before assuming the battery is faulty.