Rolando RA 201 S Compatible Battery 14.4V Ni-MH 2000mAh

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

This is a 14.4V Ni-MH replacement battery rated at 2000mAh (28.8Wh) for the Rolando RA 201 S cordless vacuum cleaner. It slots directly into the RA 201 S battery compartment and restores power to the motor drive circuit. Use this when the original cell no longer holds a useful charge.

• RA 201 S motor platform: The RA 201 S runs a brushed DC motor on a 14.4V rail. Ni-MH chemistry matches the charge profile the onboard circuit expects. Dropping voltage or swapping chemistry disrupts that balance and can trip the protection circuit prematurely.
• Bench tested on actual hardware: We cycled this cell through repeated charge and discharge passes on the RA 201 S motor platform. The BMS held cutoff cleanly at end-of-discharge and accepted the full charge cycle without false trips.
• Dock charging on the RA 201 S: Do not leave the vacuum sitting on the charging dock continuously between uses. Ni-MH cells in cordless vacuums develop capacity fade noticeably faster under constant trickle charge. 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 cell can deliver cleanly under load. A partially blocked filter is the most common trigger — restriction forces the motor to pull harder, which drags cell voltage down early. The BMS interprets this voltage sag as a depleted cell and begins throttling output. Clear the filter first, then retest under normal carpet load.

Motor cuts out mid-clean and then recovers after a short pause

This is a BMS overcurrent trip, not a dead battery. When suction is sustained against a blockage or a heavily restricted filter, current draw spikes past the protection threshold and the BMS opens the circuit. After a brief cooldown the BMS resets and the motor runs again. Check the filter and clear any blockage at the inlet before running a full clean. If trips continue on a clean filter, measure resting cell voltage — it should sit above 12.5V after a full charge.