About this replacement
Hoover Rhapsody Series — 21.6V Li-ion Replacement Battery (RABATT22VLI)
This 21.6V, 2000mAh Li-ion battery fits the Hoover Rhapsody cordless stick vacuum range, including the RA22AFG 011, RA22ALG 011, and RA22PTG 011 among others. It replaces OEM part numbers RABATT22VLI, RABAT22VLI, RAP22BAT, 48023809, and 6.20.40.01-0. Capacity is 43.2Wh at 2000mAh — matching the original factory specification.
- Rhapsody platform fit: These models share the same 21.6V nominal rail, battery bay dimensions, and BMS handshake protocol. The cell pack format — 136.60 × 79.00 × 41.00mm — is consistent across the Rhapsody line, so the same battery serves the full range without modification.
- Bench tested on actual hardware: We cycled this battery through full charge and discharge sequences on the Rhapsody platform. The BMS responded correctly to motor-start current draw and held the voltage rail steady during sustained suction loads on both hard floor and carpet settings.
- Dock charging habit for Rhapsody vacuums: Do not leave the Rhapsody on the charging dock permanently. Continuous dock charging accelerates capacity fade in Li-ion cells faster than charge-when-depleted use. Charge to full, then remove the vacuum from the dock until the next use cycle.
Suction dropping before the battery indicator reaches low
The Rhapsody motor draws significantly more current when airflow is restricted — a partially blocked filter can push draw well above the rated operating current. The BMS interprets this sustained overcurrent as a fault condition and throttles output voltage to protect the cell pack. The motor runs weaker, but the battery indicator still shows charge remaining because cell voltage hasn't actually dropped. Clean or replace the filter first — if suction recovers immediately, the battery was not the cause.
Motor cutting out mid-session and recovering after a short pause
This is a BMS overcurrent trip, not a dead battery. On the Rhapsody, it typically happens when the brush roll jams on carpet fibres or a blockage builds in the duct, forcing the motor to spike current repeatedly. The BMS cuts output to protect the cells, then resets once current demand drops — which is why the vacuum restarts after a 30–60 second pause. Clear any blockage at the nozzle or duct and check the brush roll is free-spinning before resuming use.