Midea R1-L061D Replacement Battery 9.6V 1000mAh Li-ion

Midea R1-L061D / R1TCN Series — 9.6V Li-ion Replacement Battery (RV3TH2020)

This is a 9.6V, 1000mAh Li-ion replacement battery for the Midea R1-L061D, R1-L061E, and R1TCN robotic vacuum cleaners. It replaces OEM part RV3TH2020 and restores power to the vacuum's motor and navigation system. Capacity is 9.6Wh — matching original factory specification.

• R1-L061D, R1-L061E, and R1TCN compatibility: These three models share the same 9.6V power rail, battery bay dimensions, and BMS handshake protocol — a single cell covers all three without modification.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on R1-series hardware. The BMS negotiated correctly, protection circuits tripped at expected thresholds, and the vacuum's motor control accepted the cell without fault codes.
• Dock charging habit on robotic vacuums: Do not leave the R1-L061D sitting on its dock continuously between cleans. Robotic vacuums on permanent dock charge develop capacity fade faster than units charged only when depleted. Charge to full, then remove the vacuum from the dock until the next clean.

Suction dropping before the battery indicator reaches low on the R1-L061D

This happens when the motor draws more current than the cell can sustain at its present state of charge, causing voltage to sag under load before the indicator registers a low-battery state. On the R1-L061D, a partially blocked filter is usually the trigger — restricted airflow forces the motor to pull harder, which amplifies voltage sag on an already-degraded cell. A new cell with a clean filter resolves most cases. If suction still drops early, check the brush roll for hair wrap — that adds the same motor-load penalty as a blocked filter.

Motor cutting out mid-clean then recovering after a few seconds

This is a BMS overcurrent trip, not a motor fault. When sustained suction restriction — blocked filter, tangled brush roll, or the vacuum wedged against furniture — forces current above the BMS protection threshold, the cell disconnects the load momentarily and resets. The vacuum powers back on once the BMS clears. Clear the restriction first. If cutouts continue on an unobstructed floor with a clean filter, the original cell's internal resistance has climbed high enough that normal motor-start current is triggering the trip — replacing the cell fixes this directly.