Rolando RA 201 S Replacement Battery 14.4V Ni-MH

Rolando RA 201 S — 14.4V Ni-MH Replacement Battery

This is a 14.4V Ni-MH replacement battery for the Rolando RA 201 S cordless vacuum cleaner. It delivers 3000mAh (43.2Wh) of capacity, matching the original cell specification. When the factory battery stops holding a charge or fails to run the motor through a full cleaning session, this replaces it directly.

• RA 201 S platform fit: The RA 201 S runs a 14.4V motor bus. This cell matches that voltage rail and physical footprint — 179 x 51 x 52mm — so it seats correctly in the battery compartment without forcing the latch.
• Bench tested on actual hardware: We ran the cell through charge and discharge cycles on a Ni-MH compatible charger. The BMS held charge termination correctly and the cell delivered consistent voltage through discharge without early dropout.
• Dock charging habit for Ni-MH cells: Do not leave the RA 201 S sitting on the dock permanently. Ni-MH cells degrade significantly faster under continuous trickle charge. Charge to full, then remove the vacuum from the dock until the next use.

Suction dropping before the battery indicator reaches low

The RA 201 S motor draws more current when airflow is restricted — a clogged filter or blocked nozzle forces the motor to work harder to maintain suction. Under that higher current draw, the cell voltage sags earlier than the indicator expects, so the vacuum loses suction while the gauge still shows charge remaining. This is not a battery fault on its own. Clear the filter and nozzle first, then retest. If suction recovers, the battery is fine. If the cell still sags under normal airflow, the cells have degraded and replacement is needed.

Motor cutting out mid-use, then recovering after a short pause

This pattern is a BMS overcurrent trip. It fires when the motor draws more than the cell can supply — usually caused by a sustained blockage forcing the motor to spin against restricted airflow. The BMS cuts power to protect the cell, then resets once current drops. Check and clear the filter before assuming the battery is at fault. If cut-outs continue with a clean filter and clear nozzle on a freshly charged cell, measure resting voltage — a healthy 14.4V Ni-MH pack should read at or above 14.4V at full charge.